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Open Access Article
1 - A review of new methods of removing environmental pollutants: Photolysis and UV/H2O2 processes
Hamed EskandarlooOrganic contaminants, such as dye pollutants, pharmaceutical compounds, pesticides, etc. are increasingly found in water sources, and therefore need to be controlled by modern water treatment technologies. Advanced oxidation processes are often used as an effective meth MoreOrganic contaminants, such as dye pollutants, pharmaceutical compounds, pesticides, etc. are increasingly found in water sources, and therefore need to be controlled by modern water treatment technologies. Advanced oxidation processes are often used as an effective method to remove organic contaminants. UV/H2O2 process has shown acceptable results for removing a wide range of mentioned pollutants. In this paper, the efficiency of photolysis and UV/H2O2 processes in removing organic contaminants were reviewed, and then, the significant results obtained were reported. Manuscript profile -
Open Access Article
2 - Evaluating the relationship between the level of air pollutants and the referring rate of heart disease patients to hospital in Isfahan
Azam Abdolazimi Amir Gandomkar Majid Ghias S.Mohsen HoseiniAir pollution threatens the lives of citizens as a problem of life in metropolises in the world and probably results in heart disease. The relationship between heart disease reference to hospital and pollutants was analyzed using descriptive-statistical method. The resu MoreAir pollution threatens the lives of citizens as a problem of life in metropolises in the world and probably results in heart disease. The relationship between heart disease reference to hospital and pollutants was analyzed using descriptive-statistical method. The results of Chi-squared test between heart disease patients and exposure to pollutants like SO21NO22 and PM103 and ANOVA Test with patients' exposure to CO4 and NO2 showed a significant relationship. Also calculating Correlation coefficient showed the most Pearson correlation for PM10 with 0/165 coefficient and for SO2 with 0/113 coefficient. So there is a significant and meaningful relationship between the number of heart disease patients referring to hospital and air pollutants in Isfahan. Manuscript profile -
Open Access Article
3 - Identifying and Ranking Environmental Destructive Economic Sectors Based on the Amount of Greenhouse Gas Emission by Shannon Entropy -VIKOR Approach (Case study: Iran: 1388-1392)
nahid dorostkar Ali DehghaniBackground and Objective: Today environmental issues and avoid irregular greenhouse gas emission has become one of the most important concerns of each country. This study has been done with the aim of determining the amount of greenhouse gas emission in different MoreBackground and Objective: Today environmental issues and avoid irregular greenhouse gas emission has become one of the most important concerns of each country. This study has been done with the aim of determining the amount of greenhouse gas emission in different industries and ranking these industries based on the most destructive greenhouse gas including carbon dioxide, carbon monoxide, Methane, Nitrous oxide, Nitrogen oxides, Sulfur dioxide and Sulfur trioxide. Method: In this study after identifying the most pollutant greenhouse gases based on the literature review and using the average of five recent year's data from the Iranian Statistics Center, the weight of each greenhouse gas were determined based on Shannon entropy and by using VIKOR technique and MATLAB software, the most pollutant sector was determined. Findings: Based on Shannon entropy, Co with the weight of 0.3 has the highest coefficient of importance among pollutant greenhouse gases. Based on VIKOR technique, transportation sector based on utility measure, Vikor measure and regret measure was determined as the most pollutant sector. Discussion and Conclusion: Based on the result of study, transportation sector has played a major role in greenhouse gas emissions and identified as the most pollutant sector. So, attention to structural and cultural components associated to transportation field has become more important than the past. Using green transportation technologies, investing in public transportation and providing infrastructure for non- motorized vehicles can be introduced as suggestion for reducing pollution in this sector. Manuscript profile -
Open Access Article
4 - The removal of NO2 gas by some natural adsorbents by using the adsorption method
Hossein Dashti Khavidaki Raziyeh Jafari Mousa SoleymaniBackground and Objective: Nitrogen dioxide (NO2) is one of the most dangerous pollutants in the environment. NO2 certainly causes lung damage at high concentrations. Exposure to its moderate levels (50 ppm) for a short period may produce irritation of the eyes, nose, an MoreBackground and Objective: Nitrogen dioxide (NO2) is one of the most dangerous pollutants in the environment. NO2 certainly causes lung damage at high concentrations. Exposure to its moderate levels (50 ppm) for a short period may produce irritation of the eyes, nose, and throat, cough, hemoptysis, dyspnea, and chest pain and contact to its high concentrations (> 100 ppm) can result in pulmonary edema, which can be fatal. Therefore, it is very important for environment the removing of the pollutant from air. The aim of this study has been the removal of NO2 gas by some natural adsorbents by using the adsorption method. Material and Methodology: In this work, it has been investigated the removal of NO2 gas by adsorption on different natural adsorbents including eggshell, eucalyptus bark, fennel seed, pine leaf, tea waste, and wheat straw. It was also studied the effect of some experimental conditions including adsorbent column length and initial NO2 amount on the adsorption percentage. Findings: The most desirable adsorption percentage obtained with adsorbent column length 50 cm and initial NO2 amount 6.3 mmol. In addition, Fennel seed and eggshell can adsorb 96.8 and 92.1% of NO2 gas in the optimum conditions, respectively. Discussion and Conclusion: Among the used adsorbents, the most appropriate adsorbents are fennel seed and eggshell for the adsorption process. In addition, it was correlated the equilibrium data with the adsorption isotherms such as the Langmuir, Freundlich, Temkin, and Harkin-Jura and the results showed that Harkin-Jura isotherm describes the experimental results better than the other isotherms. Manuscript profile -
Open Access Article
5 - Assessment of Environmental Pollutant Particles PM10 and PM2.5 with Air Quality Index Method (Case Study: Tehran Industrial Cement Complex)
Reza Karimi Ghoozlou Aida Ahmadi Madjid Abbaspour Nostatollan AbbaszadehBackground and Objective: Considering the importance of cement industries in the country's economic growth and its effect on emissions of air pollutants (particulate matter); in this research, the effects of Tehran cement factory on the environmental of the region have MoreBackground and Objective: Considering the importance of cement industries in the country's economic growth and its effect on emissions of air pollutants (particulate matter); in this research, the effects of Tehran cement factory on the environmental of the region have been investigated. The main purpose of this study is an assessment of environmental pollutant particles with air quality index in 2016 in Tehran Industrial Cement Complex. Material and Methodology: In this study, the particulate matter PM10 and PM2.5, was measured during a one-year period (2016), in four different seasons. To measure dust particles in the ambient air of the device is used gauge 531 MET ONE GT TSI Manufacturing Co and it has the ability to measure particles with PM10, PM2.5, PM7, and PM1. The next 8530 TSI Dust Trak II counterparty bombing device is a desktop dust-removing device that has the capability to record data. The samples were taken at 6 measuring stations in the Tehran Cement Industrial Complex, and finally, the results were evaluated as a seasonal AQI. In AQI method, which is one of the most widely used methods for assessing the air quality, at first, the pollution index is measured at a station and then determined at all stations as the highest index of contamination quality.Findings: The first finding from the present study was that the pollutant responsible for the whole spring station was a refinery, which is classified as clean. The other pollutant responsible for the entire summer stations related to the road toll (Healthy classification), Responsible pollutant for the entire autumn season station area (unhealthy classification for sensitive groups), and Responsible pollutant for the whole winter season is related to residential buildings (Healthy Classification). So the most polluting plants or four different seasons of the year is autumn PM2.5.Discussion and Conclusions: So the state of air quality with an average concentration of 106.2 mg/m3 in the Tehran cement industry classified as unhealthy for sensitive groups and were characterized by the orange color. Finally, suggestions are made to reduce particulate emissions in the industrial area. Manuscript profile -
Open Access Article
6 - Assessment of Changes in the Patterns of Urban Structure of the City on Spatial Change of Urban Air Pollutants (Case Study: Tehran City)
Vahid Moshfeghi Samira YousefianBackground and Objective: The land use pattern represents the distribution and horizontal combination of urban applications, which plays a very important role in the distribution of pollutants and urban air quality. The impacts of these pollutants can be identified in t MoreBackground and Objective: The land use pattern represents the distribution and horizontal combination of urban applications, which plays a very important role in the distribution of pollutants and urban air quality. The impacts of these pollutants can be identified in the location of pollutants (industrial, commercial, office, residential, etc.), as well as its impact on the distribution of urban travel and subsequent emissions from urban traffic. The main objective of this study is to investigate the role of land use pattern and physical structure in spatial variations of pollutants in Tehran during the period of 2011-2018.Material and Methodology: In order to achieve this goal, Landsat satellite images and also data from the Air Quality Control Center of Tehran in 2011 and 2018 were used. Kriging model was arranged using Arc GIS software to classify satellite images and specify types of applications using artificial neural network method in ENVI software and also to determine the concentration of air pollution in Tehran.Findings: The results of spatial correlation analysis showed that there was a significant correlation between spatial structure changes and air pollution in Tehran during 7 years.Discussion and Conclusion: The results of land use change and air pollution indices indicate that construction in the west and north of Tehran has increased the concentration of pollutants in these directions from the city. If the change from downstream land to urban green spaces in the east and south-east of Tehran reduces the concentration of pollutants urban air has been in these areas. Manuscript profile -
Open Access Article
7 - Estimation of pollutant emissions from the wastewater treatment plant of an Oil Refining Company by TOXCHEM software
elham mahmoudi Naeimeh Jodeiri Naghashkar morteza rezaee Esmaeil FatehifarBackground and Objective: Estimation of emissions from wastewater treatment plant of an oil refinery is one of the issues that need to be addressed. Air pollutants such as hydrogen sulfide and ammonia are among the most dangerous chemicals that affect personnel health a MoreBackground and Objective: Estimation of emissions from wastewater treatment plant of an oil refinery is one of the issues that need to be addressed. Air pollutants such as hydrogen sulfide and ammonia are among the most dangerous chemicals that affect personnel health and create environmental issues in industrial facilities because of their carcinogenic and toxic characteristics. The aim of this study is to estimate the amount of emission of air pollutants to the environment. Material and Methodology: In this study, TOXCHEM software was used to estimate the emission rates from wastewater treatment plant of an oil refining company and these results were compared with the available real data from the company. Findings: Results showed that this software is able to estimate the emission rates with high accuracy. According to simulation results, about 45,000 grams of hydrogen sulfide per day from biological treatment section and more than 50,000 grams of ammonia per day from chemical treatment section are emitted into the atmosphere. Due to the limited capacity of wastewater treatment unit in reducing the harmful emissions, it was concluded that the refining processes need to be improved in order to reduce the amount of air pollutants in the wastewater sent to treatment unit. Also simulation showed that since the biological treatment section plays major role in treatment process, the control of microorganisms is required in this unit. Discussion and Conclusion: Due to high surface area of wastewater treatment unit lagoons, aeration, wind direction and turbulence, high emission rates are observed and these emissions need to be controlled. Manuscript profile -
Open Access Article
8 - Estimation of Environmental Pollutants Shadow Price Resulting from Fossil Fuel Use in Different Economical Sectors Case study: Tehran Province
Mir Hosein Mousavi Narges Barzegar Abbas MemarzadeAbstractIntroduction: The economical sectors, being a main consumer of fossil fuels, play a basic role in theEmission of environmental pollutants. In the process of giving service, these sectors createUndesirable outputs, in addition to desirable ones. The cost of this MoreAbstractIntroduction: The economical sectors, being a main consumer of fossil fuels, play a basic role in theEmission of environmental pollutants. In the process of giving service, these sectors createUndesirable outputs, in addition to desirable ones. The cost of this polluting behavior, and also thescarcity of appropriate analytical methods for the purpose of environmental policy making, someefforts have been made. In this paper, to estimate shadow price of environmental pollutants created byfossil fuel consumption in the economical sectors of Tehran province.Material & Methods: The used methodology in this paper is input-output analysis and EPAcoefficients.Results: Results show that economic sectors include transportation sectors to create23548850629RSL social cost , service 88533443280 RLS, agricultural 74716821840 RLS andindustry7269567240 RLS among economic sectors of Tehran have the most shadow prices of environmentalpollutants resulting from fossil fuel respectively.Discussion : Considering the global movement towards sustainable development, it is essential tonotice to the environmental destruction caused by different economical sectors. The results show thatmost of the social costs of air pollutants examined in this study due to the use of gas to the price of796 RLS per liter consumption in the transportation sector, and the lowest induced kerosene to cost196 RLS per liter is consumed. Manuscript profile -
Open Access Article
9 - Investigation of Coagulation and Clotting Process of Purge of Environmental Pollutants of Paper Mill’s Wastewater
noshin birjandi Habibollah Yonesi Nader Bahramifar Mojtaba hadavifarIntroduction: Paper mill’s wastewater is the most pollutant industrial wastewaters. Theeffluent causes production sludge, scum formation and loss of aesthetic beauty in theenvironment. They also increase the amount of toxic substances in the water which causesdeat MoreIntroduction: Paper mill’s wastewater is the most pollutant industrial wastewaters. Theeffluent causes production sludge, scum formation and loss of aesthetic beauty in theenvironment. They also increase the amount of toxic substances in the water which causesdeath to the zooplankton and fish.Material and methods: The present research investigated the effect of coagulant of PACLfor reduction of the pollutants in paper mill wastewater. For reduction of the pollutants thequantity and quality of wastewater investigated.Results: This study showed that this wastewater has chemical oxygen demand (COD) =3523mg/l and turbidity= 872. In this test, parameters of turbidity, COD, total solid (TS), optimumpH and dosage of coagulant determined. According to data obtained from studies optimumpH and dosage of PACL were obtained to be 7, 785 mg/l, respectively.Conclusion: The results of the present study revealed that coagulant of PACL could reduce90% of TS, 88% of COD and 93% of turbidity in paper mill wastewater Manuscript profile -
Open Access Article
10 - Study of Legal Aspects to present and execute POPs convention in Iran in order to submit legal framework to control persistent Organic Pollutants
Farhad Dabiri Taghi Ebadi Abbas Pourhashemi Niloofar ManoochehriIn the recent years, the world has been considerably confronted with environmental problems and threats which have affected all human kind and other creatures and ecosystems. Therefore it created an international obligation to solve these global problems. Hazardous chem MoreIn the recent years, the world has been considerably confronted with environmental problems and threats which have affected all human kind and other creatures and ecosystems. Therefore it created an international obligation to solve these global problems. Hazardous chemicals and persistent organic pollutants are among environmental risks and threats. These substances can affect humans and other creatures’ health in a long run. Risk of different types of cancers, abnormal reproduction and transferring from generation to generation in human and animals are dire consequences which has also resulted increasing concerns about these dangerous situations. Persistent Organic Pollutants consist of 12 substances. Being aware of hygienic risks of pollutants, particularly their effects on women’s health and resulting problems in future generations and acknowledging disorders in oceans ecosystems and its native communities and subject to danger and their foodstuff contamination, are considered as general health issues, so global measures regarding persistent organic pollutants is essential. Therefore the UNEP governors’ council decided to develop and establish an international binding document on persistent organic pollutants on Feb 07, 1997. This convention is known as Stockholm Convention on Persistent Organic Pollutants and was enforced in 2004. Regarding commitments of Islamic Republic of Iran to Stockholm Convention, one of the central fields of enrichment to enforce the POPs convention requirements in Iran is using legal means as well as proper executive structure observing the related bindings within legal rules and regulations, the commitments are enforced via a purposeful way. Trying to have a healthy, unpolluted environment and keeping it for the future generations among the required principles to achieve sustainable development is one of the most important goals of the international society Manuscript profile -
Open Access Article
11 - Investigating the effect of economic policies of government on environmental quality in elected countries
MohammadReza Shahab Seyede Marvehi NaserSadrabadIntroduction:The process of economic development and set of economic policies in recent decades have changedthe environmental challenges to one of the most important concerns of policy makers. Therefore,investigating the role and impact of the economic policies of the g MoreIntroduction:The process of economic development and set of economic policies in recent decades have changedthe environmental challenges to one of the most important concerns of policy makers. Therefore,investigating the role and impact of the economic policies of the government on environmental qualitycan be very important.Material and Methods:In this study, the effect of government’s policies on environmental quality in 7 countries of Iran,Syria, Algeria, Egypt, Jordan, Morocco and Tunisia in the Middle East and North of Africa (MENA)during 2007-1997 was investigated in the form of econometric models using panel data. Theenvironmental quality, based on the amount of air pollutants as one of the important indicators ofenvironmental pollution, was studied, and carbon dioxide emission and aerosols concentration wereconsidered as the variables indicative of air pollution.Results and discussion:The results show that depending on the type of index selected for the environmental quality,government's economic policies can have a direct and positive relationship with air pollutants. Indeed,the findings emphasize that investment of government is an important and influential variable indetermining the amount of carbon dioxide emissions in the studied countries, and has put a positiveimpact on increase of carbon dioxide emissions. However, this result is not confirmed in the case ofaerosols. Manuscript profile -
Open Access Article
12 - The study of Tehran gas stations pollution and its effect on the surface water
Amir Hesam Hassani Golnaz Sajadi NaeiniThe issue of non-point pollution sources is among the topics which are studied in the world at the present time. Gas stations are an example of such sources the pollution of which can affect the environment, especially the area around them and in rainy weather. In this MoreThe issue of non-point pollution sources is among the topics which are studied in the world at the present time. Gas stations are an example of such sources the pollution of which can affect the environment, especially the area around them and in rainy weather. In this research, the gas stations located in the city of Tehran were identified. Then, among the city’s 104 gas stations, 9 were selected in the different parts of the city and their contamination level was studied. The tests of pH, EC (Electrical Conductivity), TSS (Total Suspended Solid), COD (Chemical Oxygen Demand), and TPH (Total Petroleum Hydrocarbons) were performed in three time periods, from October to February, on the samples of the 9 gas stations. The samples were taken from the surface water channels around the gas stations. The results demonstrated that the areas of gas stations were polluted due to their fuel run-off. The concentration of COD and TSS of the samples were 110 to 1140 mg/lit and 100 to 800 mg/lit, respectively. The amount of TPH detected in the samples was high in flat areas. The maximum contamination level occurred in November (a rainy month). The results also indicated that gas stations played an important role in polluting the surface water around stations and discharging hydrocarbon compounds in the environment. Manuscript profile -
Open Access Article
13 - Assessment of Air Pollutants and Determination of Air Quality Index in Zahedan
Farideh Atabi Mohammad Erfani Edris BazrafshanBackground and Objective: Air pollution issue is one of the most important environmental challenges in any country. In Zahedan, moderately, the air in 70 days of the year is polluted by dust.The goal of this study was assessment of air pollutants’ concentrations a MoreBackground and Objective: Air pollution issue is one of the most important environmental challenges in any country. In Zahedan, moderately, the air in 70 days of the year is polluted by dust.The goal of this study was assessment of air pollutants’ concentrations and determination of AQI in the city of Zahedan. Method: In this study, after performing the primary studies concerning the climatic and geographical conditions of Zahedan, four stations were selected for air pollutants (PM2.5, PM10, SO2, O3, NO2, CO, NO) monitoring. The measurement process was performed monthly during one year (three days per month) and the monthly wind rose in the city was prepared by Word Lop and Saba Wind software. Then considering the Air Quality Index (AQI), and by using GIS software, 96 maps were prepared and the health quality of air pollutants was determined. Results:Considering the AQI in Zahedan City, the responsible pollutant was PM2.5 for all season in 2009. Its value in spring was 185, in summer was 201, in fall was 168 and in winter was 208 Conclusion: The results of this research showed that the main responsible pollutant during the year 2009 in Zahedan was PM2.5. Also during this year, air quality for 208 days was unhealthy for all people, 95 days was unhealthy for the sensitive people, 33 days was in hazardous condition, 16 days was unhealthy and 4 days was moderate for all citizens of Zahedan city. Manuscript profile -
Open Access Article
14 - Assessment of organ chlorine contaminants in Shadegan wetland using (Barbus grypus) as a biological index
Morteza Davodi Abbas Esmaili Sari Nader Bahramifar Hasan MalvandiOne of the dangerous contaminants that enter to the Shadegan wetland is Persistent Organic Pollutants. Lipophilic and high persistency of these contaminants laid to, accumulation across the food chain. Fish is main route for entrance of these compounds to human bodies. MoreOne of the dangerous contaminants that enter to the Shadegan wetland is Persistent Organic Pollutants. Lipophilic and high persistency of these contaminants laid to, accumulation across the food chain. Fish is main route for entrance of these compounds to human bodies. Approximately 90% intake of these compounds in human bodies is from marine food. Main route for entrance of these contaminants is fish and diets that contain much amount of fish, laid to high intake of these contaminates and it is dangerous for alimentary health of resident In this research levels of poly chlorinated biphenyls and some pesticides containing DDTs, HCHs and HCB in Barbusgrypus that gathered in autumn 1386 form Shadegan wetland, were analyzed by Gas Chromatography (GC). Results show that concentration of PCBs, DDTs, HCHs and HCB were 6.38, 11.41, 4.03 and 0.19 ng g-1 respectively. Study of various pollutant metabolites show that among PCB congeners PCB-28 (4.68 ng g-1), among DDTs metabolites p,p < sup>/-DDE (8.15 ng g-1) and among HCHs isomers α-HCH (3.14 ng g-1) had the most concentrations. High concentration of p,p < sup>/-DDE in fish suggests that recently DDT pesticides have not been used in agriculture after their ban and High concentration of α-HCH suggests new input of HCH (Especially technical HCHs) into soil and water around this area. Concentrations of pollutants in sample were below than represented standards by various organizations. Manuscript profile -
Open Access Article
15 - Evaluation of Tehran city groundwater quality by WHO water quality index
Touraj Nasrabadi Pouyan Abasi MaedehIn order to determine the groundwater quality of Tehran city in 2010 and 2011, seventy one wells wereconsidered for water sampling. The groundwater quality was evaluated using WHO index and thequality was worse in 2011 in comparison with 2010.Furthermore, eastern and so MoreIn order to determine the groundwater quality of Tehran city in 2010 and 2011, seventy one wells wereconsidered for water sampling. The groundwater quality was evaluated using WHO index and thequality was worse in 2011 in comparison with 2010.Furthermore, eastern and southern areas showmore index values which indicate the lower groundwater quality for drinking use. According to theresults gained in both years, the majority of northern sampling stations lie within the good range whilethe ones in southern areas are mostly addressed as poor quality. Uncontrolled water discharge, regulardroughts as well as leakage of anthropogenic pollutants like NO3- and SO4— may be addressed as themajor causes of groundwater quality degradation within the study area. Regarding the remarkableweight of NO3 in index quality interpretation, the key role of this pollutant in groundwater qualitydetermination is manifested. Such quality degradation trend may reach a critical status in near futureand should be seriously taken into consideration. Manuscript profile -
Open Access Article
16 - Dispersion modelling of SO2 pollution Emitted from Ramin Ahwaz power plant using AERMOD model
IMAN Momeni afshin Danehkar sahebe Karimi nemat allah KhorasaniAir pollution defined as ”existence ofAir pollution defined as ”existence of unfavourable matters in concentration, duration, and frequencies that can has an adverse effect on human wellbeing and environment”. World health organization (WHO) estimates MoreAir pollution defined as ”existence ofAir pollution defined as ”existence of unfavourable matters in concentration, duration, and frequencies that can has an adverse effect on human wellbeing and environment”. World health organization (WHO) estimates that annually 500000 persons have unripe death because ofair pollution. Sulphur dioxide is one of the air pollutant that has acute effects on human health.Fossil fuels consumption in point sources and industrial processes is the main source of sulphur dioxide was emitted to atmosphere. Annuallyaround 547500 tons of sulphur dioxide emitted from thermal power lants in Iran. In comparison of other industries, thermal power plants are main source of this type of pollutions in Iran. In this study we used AERMOD model (a kind of GAUSSIAN models) to Dispersion modelling of SO2 pollution from Ramin Ahwaz power plant. The results have shown that ulphur dioxide concentration emitted from this power plant in any indition of weather is lower than threshold limits specified by Iran DOE and US EPA. Manuscript profile -
Open Access Article
17 - Groundwater pollution sources and restoration techniques
Afsane Shahbazi Farzad MehrjoGroundwater is the water that is said to have gathered in the basement of saturated aqueous layers.One of the main sources of water supply in all countries of the world is considered and its use inagricultural irrigation and municipal and industrial uses is growing. Exc MoreGroundwater is the water that is said to have gathered in the basement of saturated aqueous layers.One of the main sources of water supply in all countries of the world is considered and its use inagricultural irrigation and municipal and industrial uses is growing. Excessive use of groundwater andcontaminants entering the municipal solid waste from industrial sources, petroleum hydrocarbons,Pollution from heavy metals such as arsenic, radioactive waste and nitrates has caused many problemsfor these sources. So there are many ways to restore contaminated groundwater among the ways thatwe can deal with the leachate to groundwater, using iron nanoparticles for groundwater treatment, biocleanup of groundwater contaminated with petroleum hydrocarbons, including simulation methods tosimulate pumping methods - filtration and aeration of contaminated groundwater in place recoverynoted. The study concludes that nanotechnology methods in addition to a good performance that canbe the cost of drinking water from groundwater sources also minimized. And the best place for wastedisposal to prevent the infiltration of leachate into groundwater in arid and semi-arid areas is located. Manuscript profile -
Open Access Article
18 - Biosensors Application in Analysis of Environmental contaminants from Agricultural Industries
Marzieh Hosseini Nezhad Saeed SamadiWater contamination and environmental pollution is considered as a main concern in global healthissues. Considering the large number of chemical and microbial contaminants released to theenvironment, in particular those from agricultural origin, effective tools of detec MoreWater contamination and environmental pollution is considered as a main concern in global healthissues. Considering the large number of chemical and microbial contaminants released to theenvironment, in particular those from agricultural origin, effective tools of detection are required forprevention of challenges involved in health and safety. Biosensors offer rapid and effective detectionoptions to control biological hazards. These are recognized as beneficial devices in providing accurate,sensitive and rapid analytical results in quantitative and qualitative detection of pollutants. This paperis summarizes the advances in development and application of biosensors for environmental analysisand quantification of contaminants initiated from agricultural procedures Manuscript profile -
Open Access Article
19 - Studying nitrogen pollutant, mono dioxide carbon and dioxide nitrogen in Aghdasiyeh station during 2012 in Tehran
Narges Arab Seyed Hamed MirkarimiToday, with the raise of city population and industrialization of big cities, concentration of air pollutants has increasingly accelerated. Employing more than ten million people and too much focus of industries and factories in geographical area of Tehran along with ge MoreToday, with the raise of city population and industrialization of big cities, concentration of air pollutants has increasingly accelerated. Employing more than ten million people and too much focus of industries and factories in geographical area of Tehran along with geographical situation, topography and certain climate condition caused Tehran to be one of the most polluted cities in the world. Due to increase of pollution in cities, awareness with air quality in a period and changes of air pollutants can have key role in urban health management. In the current paper, temporal changes of nitrogen pollutants, nitrogen dioxide and carbon dioxide in Tehran were reviewed.In this paper data of air pollution monitoring data of Aghdasiyeh station were applied that are under supervision of air quality control Company in order to study changes of pollutants CO, NO2 and O3 in Tehran. Meteorological data and wind speed were gathered from geophysics station in a 12-month period in 2011. First, data required were extracted from raw data and then they were applied based on the research objective.The results of the current research indicate that according to monthly temporal changes of O3 concentration during the period mentioned, the minimum amount is in Dec and the maximum one is in Jun. Average monthly trend of concentration N2 indicated the minimum amount is in Dec and the maximum one is in Jul. And according to CO concentration, the minimum amount is in Apr and the minimum is in Jan and Feb. Manuscript profile -
Open Access Article
20 - Effect of flooding on Contamination of Agricultural Soils, with Case study
Ramin SalmasiDuring the intensive flood in 1384, the floodplains in east Azerbayjan were waterlogged for a periodof 1 month. The aim of the study was to assess the effect of the flood on the level of contamination ofthe soils in this region. For this purpose, 20 soil samples were co MoreDuring the intensive flood in 1384, the floodplains in east Azerbayjan were waterlogged for a periodof 1 month. The aim of the study was to assess the effect of the flood on the level of contamination ofthe soils in this region. For this purpose, 20 soil samples were collected from the area immediatelyafter the flood event from the upper (0–30 cm) soil layer together with four samples from the 30–60-cm depth layer. The analysis included basic physicochemical soil properties, contents of Cd, Ni, Pb,Cu, and Zn metals. The concentrations of identified metals at all the samples were below theacceptable limits for agriculture use. The results show that this flooding episode in “clean” agriculturalarea had no immediate negative impact on the soils properties (organic matter percent, acidity, andnitrogen content) and did not result in excessive soil contamination. Manuscript profile -
Open Access Article
21 - Effect of Flooding on Contamination of Agricultural Soils Based on a Case Study
Ramin SalmasiDuring the intensive flood in 1384, the floodplains in east Azerbayjan were waterlogged for a period of 1 month. The aim of the study was to assess the effect of the flood on the level of contamination of the soils in this region. For this purpose, 20 soil samples were MoreDuring the intensive flood in 1384, the floodplains in east Azerbayjan were waterlogged for a period of 1 month. The aim of the study was to assess the effect of the flood on the level of contamination of the soils in this region. For this purpose, 20 soil samples were collected from the area immediately after the flood event from the upper (0–30 cm) soil layer together with four samples from the 30–60 cm depth layer. The analysis included basic physico-chemical soil properties, contents of Cd, Ni, Pb, Cu, and Zn metals. The concentrations of identified metals at all the samples were below the acceptable limits for agriculture use. The results show that this flooding episode in “clean” agricultural area had no immediate negative impact on the soils properties (organic matter percent, acidity, and nitrogen content) and did not result in excessive soil contamination. Manuscript profile -
Open Access Article
22 - Effect of acid rain on environment and Persepolis archaeological zone
Mohammad Mehdi Ghanbari Sayed Mahdi Bourghaee Amir Hessam Hassani Sima FarjadfardAccording to erosion stones in Perspolis archeological zone, it was decided to study parametersaffecting this process. In this research, geographical map of the site and direction of seasonal andyearly winds were studied and samples of rain water were analyzed. Rain wat MoreAccording to erosion stones in Perspolis archeological zone, it was decided to study parametersaffecting this process. In this research, geographical map of the site and direction of seasonal andyearly winds were studied and samples of rain water were analyzed. Rain water samples fromdifferent locations of Marvdasht city in spring, autumn and winter was collected and tested for acidity.pH of the rain samples of Perspolis region varied between 5.97 and 6.58 during three seasons and allof them were acid rains, which could be one of the most important factors in erosion process of thisenvironment. It is predicted that pollutants emitted from Shiraz Petrochemical Company, Marvdashtcity industries and also exhaust from vehicles have moved toward the west and north-west zone bymentioned winds. So, these pollutants are conflicted to Rahmat mountains (Perspolis archeologicalzone is placed in hillside of Rahmat mountains) and soluted into rainfalls and finally washed with therain water (named acid rain) onto stones and environment of this zone. Manuscript profile -
Open Access Article
23 - Investigating phytoremediation of soils contaminated with heavy metals by microorganisms
Alahyar Kamari Asaf OrujzadehPurpose: The purpose of the present study was to investigate the phytoremediation of soils contaminated with heavy metals by microorganisms. Materials and methods: This study was conducted with a review-descriptive method on the studies conducted on herbal treatment. MorePurpose: The purpose of the present study was to investigate the phytoremediation of soils contaminated with heavy metals by microorganisms. Materials and methods: This study was conducted with a review-descriptive method on the studies conducted on herbal treatment. Findings: The results of this study showed that many techniques have been developed to clean soils contaminated with heavy metals. Among these techniques, plant extraction (plant treatment) has been presented as an effective and cheap cleaning method, in which the absorption and collection of pollutants in plant tissues is considered. In this method, by harvesting plants from the soil, the pollutants are removed from the soil. In agricultural lands contaminated with heavy metals, the selection of metal-tolerant crops to remove pollutants from the soil can be a new strategy for land management. A number of cadmium accumulating species that have been reported based on the results of hydroponic and pot tests are species with high biomass, including corn, sunflower and Indian mustard for refining areas contaminated with heavy metals. Conclusion: Various physical, chemical and biological methods have been suggested for the treatment of areas contaminated with heavy metals and other pollutants, which are mostly costly and uneconomical. Manuscript profile -
Open Access Article
24 - HCl- Etched Steel Fiber for Determination of Phthalates in Water Samples by Solid-Phase Microextraction
Afsaneh Mollahosseini Nima Baghbadrani Seyed Saeid Hosseini -
Open Access Article
25 - Application of Semiconductor Photocatalysis for Effective Elimination of Organic Contaminants from Sewage
Soodabe Gharibe -
Open Access Article
26 - Biodiesel Preparation by Transesterification Persian lilac Oil Seeds and Investigating the Effects of Utilizing it in a Diesel Engine on Exhaust Pollutants
Hossein Jam Ahmad Ghazanfari Moghaddam Mohsen ShamsiBiodiesl is a renewable fuel that can be used alone or combined with diesel fuel in diesel engines. In this research biodiesel was synthesized using Persian lilac oil seeds. Biodiesel was purified by washing it with water and some of its physical properties was measured MoreBiodiesl is a renewable fuel that can be used alone or combined with diesel fuel in diesel engines. In this research biodiesel was synthesized using Persian lilac oil seeds. Biodiesel was purified by washing it with water and some of its physical properties was measured. Then it was mixed at 10, 20 and 30% proportion with regular diesel fuel and was tested in a four-cylinder diesel engine. The exhaust pollutants including CO, CO2, unburned carbohydrates (HC), NOx and the temperature of the exhaust gases were determined at three engine loadings of 200, 250, and 300 N.m and at six engine speeds ranging from 1300 to 1800 rpm. The measured pollutants were compared with those obtained from a regular diesel fuel. The results indicate that with increase in the percentage of biodiesel the emission of CO and HC and the temperature of the exhaust gases decreased but the CO2 and NOx emissions increased. By increasing the speed of the engine the emission of CO, CO2, HC and the temperature of the exhaust gases increased but the amount of NOx deceased. Increase in the engine loading caused a decrease in NOx emission but other measured pollutant and the temperature of the exhaust gases increased. Manuscript profile -
Open Access Article
27 - Synthesis and Application of Heterocyclic as ultraviolet Absorbers
Mahdieh Entezari Ebtesam Tohidi nejad Aida Hafezi Mostafa Afrasiabi -
Open Access Article
28 - A Review of Synthesis of an Efficient Photocatalyst for Photocatalytic Degradation of Organic Pollutants in Effluents
Paymaneh Taghizadeh-Lendeh Amir Hossein Mohsen Sarrafi Afshar Alihosseini Naeimeh Bahri-Laleh -
Open Access Article
29 - Development and Characterization of Graphene Oxide based Composite for Adsorptive Removal of Azo Reactive Dyes from Aqueous Media
Zahra Zareei saeid Jafari Mohammad D.ahmadabadi Mohammadali Shirgholami Masoud Rohani MoghadamIn this study, we tried to present an efficient method for removal of Reactive red 241 (RR241) from aqueous media, using a modified carbon composite with GO sheets. The prepared nanocomposites were then charchterized by commonly identical techniques involving FESEM, BET MoreIn this study, we tried to present an efficient method for removal of Reactive red 241 (RR241) from aqueous media, using a modified carbon composite with GO sheets. The prepared nanocomposites were then charchterized by commonly identical techniques involving FESEM, BET, and FT-IR. In removal studies, various parameters affecting the adsorption process including pH, time, adsorbent dose, temperature as well as the amount of GO in the construction of composite were studied by response surface method. The optimum conditions for 100 mg/Ldye removal were pH of 5.0, 75 minutes time , and the adsorbent dose of 1.47 g/L containing 4.15 wt.% of GO. Also, under optimum conditions, the maximum, 96% removal, was achieved. Experiments showed that the adsorption was more consistent with the Langmuir equations, and the maximum adsorption under this model was 160 mg/g. The removal experiments showed that the amount of the adsorbent, GO content and pH had a significant effect on RR241 removal. BET analysis indicated that the addition of GO to the carbon composite structure improved the pore size, total pore volume, and effective surface area of the composite. Also, isotherms, kinetics, and thermodynamic studies of adsorption depicted that the Langmuir isotherm model, pseudo-second-order kinetic model, and self-adsorption are suitable models for RR241dye adsorption. Manuscript profile -
Open Access Article
30 - Examination of Mercury pollution on urban built environment with regard human health and emphasis on drinking water (Case study: Drinking water of Alborz Industrial city)
Mohammadreza Sadeghi Moghaddam -
Open Access Article
31 - Effect of Sr substitution on structural, redox and catalytic properties of nano-particles La1-xSrxMn0.5Co0.5O3 (x = 0.0, 0.1, 0.2, 0.3, 0.4, 0.5) as a catalyst for CO oxidation
Marzieh Lotfi Ahmad Gholizadeh Azim Malekzadeh -
Open Access Article
32 - Investigation the potential of MODIS and Sentinel 5 sensors in estimating the amount of air aerosols (A Case Study: Khuzestan Province)
Hamidreza Ghafarian aboozar kiani فهیمه ARABI ALI ABADAir pollutants in Iran's metropolitan areas are among the serious challenges for managers, which also threatens the health of citizens. Monitoring air pollution is an important task in public health. Also, the unavailability of ground station data is often prevented due MoreAir pollutants in Iran's metropolitan areas are among the serious challenges for managers, which also threatens the health of citizens. Monitoring air pollution is an important task in public health. Also, the unavailability of ground station data is often prevented due to the lack of network of ground monitoring stations to know the exact amount of air pollution in different parts of the country. Therefore, the use of remote sensing images in continuous monitoring of air pollutants due to their low cost and low manpower, will be appropriate and cost-effective. In this research, Sentinel 5 satellite images and MODIS sensors have been used for analytical study to detect the average trend of changes and spatial distribution of dust in Khuzestan province. The aim of this study was to use relatively high-resolution satellite data for local monitoring of air quality/air pollution and to investigate the relationship between Sentinel and MODIS image sensors. Findings indicate significant amounts of AOD in several parts of the study area such as Ahvaz, Abadan, Khorramshahr, BandarMahshahr and Bavi. Also, a small amount of fine dust is seen in the southeastern, eastern and northeastern cities of the province. According to the results of this research, as we move from the southeast, east and northeast and move towards the southern and western parts of the province, the amount of fine dust increases. Manuscript profile -
Open Access Article
33 - The role of automobile factories and Moin Kagaz Raje company on the air pollution of Khashroodpi city of Babol using the Leopold matrix method
mohammad Motamedi ahmad araeyan mahdi vatanparastThe purpose of the present study is to investigate industrially produced pollutants of two automobile factories and Moin Paper Company of Rajah Industrial Town and its role on the pollution of Khashrudepi city, which is the closest city to Rajah Industrial Town. The que MoreThe purpose of the present study is to investigate industrially produced pollutants of two automobile factories and Moin Paper Company of Rajah Industrial Town and its role on the pollution of Khashrudepi city, which is the closest city to Rajah Industrial Town. The question raised in this research is to what extent the two Rajah industrial factories affect the air pollution of Khashrudopi city. This research is practical in terms of purpose and descriptive-analytical and correlational in terms of research method. This research is done to find out the existence of the relationship between the variables, but it is not necessary to discover the cause and effect relationship. The methods used to collect and analyze data in this research are list method, checklist and Leopold's matrix. The relationship and correlation between the values of the investigated parameters were investigated by Pearson's correlation test and SPSS software. Since the Pearson test can be performed for normal data, the Kolmogorov-Smironov test was first performed to check the normality of the data. The obtained results indicate that there is a direct relationship between the changes in the pollutant parameters of carbon monoxide, sulfur dioxide, fine dust with a size of 10 microns, and nitrogen dioxide in the two regions of Rajah and Khashrudepi industrial towns, and there is significance between the two regions regarding the parameter Ozone was not detected. Manuscript profile -
Open Access Article
34 - Investigating the effect of air pollutants in Tehran on leaf surface, proline concentration, soluble carbohydrates and photosynthetic pigments (chlorophyll a, chlorophyll b, total chlorophyll and carotenoids) in two Nerium oleander and acacia (Robinia pseudo acacia L.) plants.
مهلقا ghorbanaali gh bakhshi زینب bakandeThe effects of air pollutants in Tehran city on leaf area, proline concentration, soluble carbohydrates and photosynthetic pigments (chlorophyll a, chlorophyll b, total chlorophyll and carotenoids) in acacia and persimmon were the subject of this research. At first, usi MoreThe effects of air pollutants in Tehran city on leaf area, proline concentration, soluble carbohydrates and photosynthetic pigments (chlorophyll a, chlorophyll b, total chlorophyll and carotenoids) in acacia and persimmon were the subject of this research. At first, using the information of Environmental Protection Organization and Air Quality Control Department, Sorkheh Hesarbeh Park was selected as a clean environment and Azadi area as a polluted environment, and the desired plants were taken from these two areas. Leaf area in November (84) and June (85) and concentration of proline, soluble carbohydrates and amount of photosynthetic pigments (chlorophyll a, chlorophyll b, total chlorophyll and carotenoids) in July (85) were determined and compared by spectrophotometric method. The results of this research showed that air pollution caused a significant decrease in the leaf area in acacia and persimmon. Also, air pollution increased the concentration of proline in two plants, Acacia and Persimmon. Due to air pollution, the concentration of soluble carbohydrates decreased in acacia and increased in persimmon, and these changes were statistically significant. The results of this research showed that as a result of air pollution, the amount of photosynthetic pigments including (chlorophyll a and b and total chlorophyll and carotenoids) increased significantly in date palm, and in acacia chlorophyll a and total chlorophyll and carotenoids decreased, this decrease is significant in the case of carotenoids. and the amount of chlorophyll b did not change much. Manuscript profile -
Open Access Article
35 - Nanophotocatalytic Desulfurization of Hydrophane 10 Base Oil of Tehran Refinery
Reza Fazaeli -
Open Access Article
36 - Nanophotocatalytic Desulfurization of Hydrophane 10 Base Oil of Tehran Refinery
Mojgan Jalali Farahani Reza Fazaeli Ensieh Ghasemi -
Open Access Article
37 - The relationship between the land surface temperature, changes in the vegetation cover and air pollutants using the Google Earth Engine
Razieh Mirfazlolah -
Open Access Article
38 - Enhancement of photocatalytic activity of ZnO–SiO2 by nano-sized Pt for efficient removal of dyes from wastewater effluents
Leila Vafayi Soodabe Gharibe -
Open Access Article
39 - A NONLINEAR MATHEMATICAL MODEL FOR ASTHMA: EFFECT OF ENVIRONMENTAL POLLUTION
NARESHA RAM Agraj Tripathi -
Open Access Article
40 - Energy Consumption and Equivalent Carbon Emissions in the Life Cycle of Conventional Housing External Walls, an Approach to Sustainable Energy Development Case Study: Regions in Sanandaj
Ayoob Moradkhani. Niloufar Nikghadam Mansoureh TahbazEnergy sustainability is realized within the framework of sustainable development. Considering the major share of energy consumption of residential buildings in Iran, this study aimed to identify and compare the external walls of Sanandaj housing as the most effective e MoreEnergy sustainability is realized within the framework of sustainable development. Considering the major share of energy consumption of residential buildings in Iran, this study aimed to identify and compare the external walls of Sanandaj housing as the most effective energy consumption factor in the life cycle of the building, and was sought to assess the embodied Energy and environmental pollutants in the production period as well as the operational cycle. Considering the analytical-descriptive approach, after describing the related principles, Delphi method and analytical hierarchy of Fuzzy AHP were used to identify and zonate the frequency of common external walls in three areas of Sanandaj. Then, the energy consumption of the embodid period was assessed with the existing data and using modeling and simulation of a city block in Design Builder software the energy of the operational cycle was assesed considering the relevant variables. Interpretation of the findings was conducted using SPSS, ANOVA and Duncan's test for comparing the classifications and indicated a significant relationship between the embodied energy levels of production and operational cycle between the walls and its extent in the three regions of Sanandaj city. The very low contribution of primary energy of the embodied period compared to the operational cycle for three metropolitan areas was 2.01, 1.87 and 1.86, respectively, of life cycle of the building. The results of the research in regions of Sanandaj indicated the unfavorable condition of energy consumption in the widespread use of the walls during the life cycle stages of the building. Manuscript profile -
Open Access Article
41 - Statistical Analysis of Air Pollutants and Atmospheric Elements and Their Relationship With The Deaths Resultant By Heart Diseases in Tehran
hossein mohamadi faramarz khoshakhlagh naser golizadehPollution of the air is amongst the most vital and complex issues in industrial civilization which has a menacing influence on the environment. Furthermore, climatic over-measurement has increased the spread of these pollutants in the atmosphere, which will consequently MorePollution of the air is amongst the most vital and complex issues in industrial civilization which has a menacing influence on the environment. Furthermore, climatic over-measurement has increased the spread of these pollutants in the atmosphere, which will consequently augment their influence on human beings and their natural ecological systems. The aim of the present study is analyzing the relationship between climatic elements and air pollution with the deaths caused by heart diseases in Tehran from 2006 to 2010. In this regard, the relationship between climatic variables and pollutant variables with death caused by heart diseases was scrutinized using mixed methods of Pearson product-moment correlation and multiple regression .The findings demonstrate that there exists a negative correlation between climatic elements of the temperature with a correlation coefficient of. /47. The pressure with a coefficient correlation of ./42 has a direct influence on the rate of the deaths from heart diseases with the meaningful significance of ./99. All the elements show a significantly meaningful correlation with the deaths from heart conditions ; notwithstanding, the most meaningful correlation was observed in carbon monoxide which was. /41 with a meaningful significance of. /99. When all the chemical elements in the air are present en masse, a unit of change in temperature based upon the Celsius degree will have a decrease of 17/12 in death caused by heart conditions. A unit of one percent change in humidity leads to a decrease of 7/9 percent in deaths. The change of one unit of PPM in carbon monoxide causes an increase of 26/2 and one unit of change in suspended particles based upon micro gram or cubic meter causes an increase of 1/4 in the rate of the deaths caused by heart diseases in the city of Tehran. Manuscript profile -
Open Access Article
42 - جذب فلزات سنگین (کادمیوم، مس، نیکل، روی و سرب) توسط اجزای مختلف درخت نارون (Ulmus carpinifolia) در شهرستان آباده
مهدی زارع رضا فاطمی طلب ملیحه سادات افضلی زادههدف از این تحقیق بررسی غلظت­ های کادمیوم، مس، نیکل، روی و سرب در اجزای مختلف درخت نارون (Ulmus carpinifolia) در سه رویشگاه (آلوده، نیمه آلوده و شاهد) شهرستان آباده در تیر 1394 بود. مطالعه براساس آزمایش فاکتوریل در قالب طرح کاملا تصادفی در سه تکرار انجام شد. غلظت عنا Moreهدف از این تحقیق بررسی غلظت­ های کادمیوم، مس، نیکل، روی و سرب در اجزای مختلف درخت نارون (Ulmus carpinifolia) در سه رویشگاه (آلوده، نیمه آلوده و شاهد) شهرستان آباده در تیر 1394 بود. مطالعه براساس آزمایش فاکتوریل در قالب طرح کاملا تصادفی در سه تکرار انجام شد. غلظت عناصر سنگین توسط دستگاه جذب اتمی با استفاده از روش اسپکتروسکوپی اندازه­ گیری شد. نتایج نشان داد که رویشگاه­ های آلوده و شاهد به ترتیب دارای بیشترین و کمترین مقدار کادمیوم، مس، نیکل و روی بود که نشان دهنده این است که ترافیک، منبع اصلی این فلزات سنگین است. رویشگاه شاهد دارای مقدار متوسط سرب (15/0 میلی­گرم بر لیتر) بود. مقدار جذب عناصر مورد مطالعه بدین ­صورت بود: سرب<کادمیوم<مس<روی=نیکل. غلظت عناصر سنگین بجز کادمیوم برگ، ریشه و ساقه از حد مجاز کمتر بود. درخت نارون (U. carpinifolia) را می­توان به­ عنوان یک زیست ردیاب آلودگی فلزات سنگین در شهرستان آباده به کار برد. Manuscript profile -
Open Access Article
43 - مقایسه توان گیاه پالایی دو گیاه زینتی پوتوس و سانسوریا به هنگام مواجه با آلودگی های فضای بسته
ویدا اخوان مرکزی روح انگیز نادری الهام دانایی سپیده کلاته جاری فرشته نعمت اللهیآلودگی هوای داخل خانه یکی از مهمترین موضوعات زیست محیطی در جهان است. ترکیبات آلی فرار که از جمله آلاینده های محیط های بسته می باشند، می تواند سلامت انسان را به خطر بیاندازد. در این راستا و به منظور بررسی توان گیاه پالایی دو گیاه سانسوریا و پوتوس در حذف چهار آلاینده بنز Moreآلودگی هوای داخل خانه یکی از مهمترین موضوعات زیست محیطی در جهان است. ترکیبات آلی فرار که از جمله آلاینده های محیط های بسته می باشند، می تواند سلامت انسان را به خطر بیاندازد. در این راستا و به منظور بررسی توان گیاه پالایی دو گیاه سانسوریا و پوتوس در حذف چهار آلاینده بنزن، استون، اتانول و متانول از محیطهای بسته هدف، آزمایشی طراحی و اجرا گردید. ابتدا دو گونه گیاهی بطور جداگانه در گلدانهای مختلف کشت شدند، سپس درون محفظه های شیشهای دربسته به حجم 125 لیتر قرار گرفتند. هر گیاه به مدت 24 ساعت در معرض غلظتهای مختلف آلایندهها قرارگرفت. نتایج بررسیهای بیوشیمیایی نشان داد، درصد نشت یونی گیاهان پوتوس تیمار شده در مقایسه با شاهد کاهش یافته است اما در گیاه سانسوریا در اکثریت تیمارها افزایش یافت. در مقابل، محتوی کلروفیل کل برگ سانسوریا در تمام تیمارها افزایش داشت اما در پوتوس به جزء تیمار بنزن 50 میکرولیتر/لیتر تفاوت چشمگیری با شاهد دیده نشد. میزان فعالیت آنزیم کاتالاز در هر دو گیاه کاهش چشمگیری داشت خصوصا تیمار استن 50 میکرولیتر/لیتر در گیاه سانسوریا. میزان فعالیت آنزیم سوپراکسید دیسموتاز در دو گیاه و تمام تیمارها نسبت به شاهد افزایش داشت و بیشترین آن در تیمار بنزن50 میکرولیتر/لیتر در گیاه سانسوریا بود. همچنین میزان محتوای پرولین گیاهان پوتوس تفاوتی نسبت به شاهد نداشت اما در سانسوریا کلیه تیمارها خصوصا دو تیمار استن 50 میکرولیتر/لیتر و اتانول 50 میکرولیتر/لیتر افزایش یافتند. با توجه به نتایج هر دو گونه استفاده شده در این تحقیق قادر به گیاه پالایی محیط های بسته می باشند و این توانایی در پوتوس به دلیل سازگاری بالاتر با شرایط، بیش از سانسوریا مشاهده شد. همچنین هنگام قرار گرفتن در معرض بنزن بیشترین و به هنگام تیمار با استون کمترین تنش و آسیب بافتی به گیاهان وارد شد. Manuscript profile -
Open Access Article
44 - درخت سرو نقرهای (Cupressus arizonica Greene) به عنوان زیست ردیاب آلودگی فلزات سنگین در اتمسفر اصفهان
مهدی زارع مریم صنعتگر رضا فاطمی طلبدرخت سرو نقرهای با شاخ و برگ سبز مایل به آبی و پوست قهوهای مایل به قرمز در دنیا به عنوان یک گیاه زینتی کشت میشود. یکی از جدیدترین راههای شناخت نوع و میزان آلوده کنندههای محیطی، زیست ردیابی محیطی است. نمونهها از سه سایت (ترافیک سنگین، ترافیک متوسط و شاهد) در Moreدرخت سرو نقرهای با شاخ و برگ سبز مایل به آبی و پوست قهوهای مایل به قرمز در دنیا به عنوان یک گیاه زینتی کشت میشود. یکی از جدیدترین راههای شناخت نوع و میزان آلوده کنندههای محیطی، زیست ردیابی محیطی است. نمونهها از سه سایت (ترافیک سنگین، ترافیک متوسط و شاهد) در اصفهان در ماههای شهریور، آذر و اسفند به دست آمد. غلظتهای روی، نیکل و مس در برگ و ریشه توسط اسپکتروفتومتر جذب اتمی اندازهگیری شد. تنوع بین صفات مورد مطالعه بین سایتها و فصول، ناشی از فعالیتهای مختلف انسانی در محیط بود. غلظت فلزات سنگین در برگها نسبت به ریشهها در همه مکانها بیشتر بود که نشاندهنده سهم معنیدار ذخایر جوی بود. نتایج حاصل از ضرایب همبستگی بین صفات نشان داد که سایتها تحت تأثیر منابع مختلف آلودگی قرار گرفتند. وجود ضریب همبستگی مثبت بین عناصر روی و مس، نشان دهنده منابع تولیدکننده همانند است که همان سوخت خودروها و استفاده از ترمز در وسایل نقلیه است. میانگین مقادیر فلزات به صورت زیر بود: نیکل> مس> روی. میزان روی در برگ و ریشه در سایت شاهد متوسط بود که نشاندهنده این است که ترافیک وسایل نقلیه منبع ناچیزی برای آلودگی روی بود و ممکن است منبع دیگری مثل فعالیتهای صنعتی دخیل باشد. نتایج نشان داد که درخت سرو نقرهای زیست ردیاب مناسبی برای آلودگی جوی اصفهان میباشد. Manuscript profile -
Open Access Article
45 - Magnesium ferrite/reduced graphene oxide nanocomposite and its photocatalytic application in pollutant degradation and fuel production
majid Ghanimati Mohsen Lashgari Vassilios BinasPreparation of effective nanocomposite energy materials using Earth-abundant elements and eco-friendly chemicals for application in photocatalytic degradation of hazardous materials and production of fuel is a sustainable strategy for pollutant removal and supplying hyd MorePreparation of effective nanocomposite energy materials using Earth-abundant elements and eco-friendly chemicals for application in photocatalytic degradation of hazardous materials and production of fuel is a sustainable strategy for pollutant removal and supplying hydrogen, the green/carbon-free fuel in modern world. In this article, the nanostructured magnesium ferrite (MgFe2O4) semiconductor was synthesized and employed for the production of hydrogen gas through the light-induced splitting of alkaline H2S solution and photocatalytic degradation of methyl orange–a refractory azo dye. Investigations revealed that the synthesized photocatalyst has the ability to destroy pollutant and produce hydrogen. To improve the photocatalyst activity, graphene oxide (GO) precursor was prepared through the modified Hummers method and utilized directly in the hydrothermal synthesis of MgFe2O4/rGO nanocomposite. The evidence showed that the presence of rGO (reduced graphene oxide) and the formation of nanocomposite can significantly increase the decolorization ability and hydrogen release in terms of enlarging the photocatalyst surface area, slowing down the electron-hole recombination, and enhancing photon absorption. The degradation efficiency was 84% [measured after one hour operation of the photoreactor] and the rate of hydrogen release was 5567 µmol/h [per gram of photocatalyst], indicated the good performance of the nanocomposite photocatalyst in pollutant removal and fuel production Manuscript profile -
Open Access Article
46 - Preliminary assessment of using solar-based systems in the facade of building in Abadan: A sustainable development approach
Sayed Ehsan Badakhshian Mohammad Baharvand -
Open Access Article
47 - Lead Effect on Aminolevulinic Acid Dehydratase Activity of Feral Pigeon (Columba livia) in Drenas
Albana Plakiqi Milaimi Qerim I. Selimi Kasum Rr.Letaj Artan Trebicka -
Open Access Article
48 - Ecological Risk Assessment and Pollution Models of Trace Metal Concentrations in Road Dust in parts of Enugu, Southeastern Nigeria
Chigozie Bright Ichu Jushua Ifeanyichukwu Ume Alexander Iheanyichukwu Opara Francis Chizoruo Ibe -
Open Access Article
49 - Environmental Survey on Microbial Contamination in Two Public Hospitals in Qazvin
Mohadeseh Choubdar Shagahyegh Mousavi Zohreh Naghdali Faezeh Mohammadi Milad Mousazadeh Ahmad Nikpey -
Open Access Article
50 - Evaluation of the condition of air pollutants in Mashhad city at different stations by using the Inverse Distance Weighting method
Reza Fekri Zahra Rostami Hadi Tahsini -
Open Access Article
51 - Optimal location of electrical generation from urban solid waste for biomass power plants
Reza Alayi Mehdi Jahangeri Hossein Monfared -
Open Access Article
52 - Investigation of civil responsibility for the spread of environmental pollution caused by the Coronavirus pandemic
Shadi Shoghi beygi S.Ali Jozi Mojtaba Zamani -
Open Access Article
53 - Estimation of Concentration of Air Pollutants in Shazand Thermal Power Plant with Support Vector Machine Model Based on Selection of Effective Input Variables with Partial Mutual Information (PMI) Algorithm of Distribution of Air Pollutants
Seyed Ali Jozi Ghodratollah Siahpour Neda Orak Hossein Fathian Solmaz Dashti -
Open Access Article
54 - Spatial and Temporal Analysis of Air Pollutants in Jiangsu Province, China
Anbu Clemensis Johnson -
Open Access Article
55 - Evaluation of blood parameters changes of mice exposed to long-term Wi-Fi waves as a major environmental pollutants
Hamed Akbari Lobat Taghavi Seyed Kamal Eshagh Hossaini Mohammad Gholami-Fesharaki Seyed Alireza Mirzahosseini -
Open Access Article
56 - A brief review on adsorption of heavy metals using widely used metal oxide nanoparticles including zinc oxide, titanium dioxide and iron oxide
Amir hossein Haghighi Sheida EsmaielzadehThe rapid process of industrialization and increased use of heavy metals such as mercury, cadmium, lead, copper, silver and arsenic in the last two decades has inevitably led to the increase of these metals in environments. The introduction of such compounds through ind MoreThe rapid process of industrialization and increased use of heavy metals such as mercury, cadmium, lead, copper, silver and arsenic in the last two decades has inevitably led to the increase of these metals in environments. The introduction of such compounds through industrial, urban and agricultural sewage, etc., has created conditions that are always considered a threat to human health. Therefore, it is very necessary to remove these pollutants from the point of view of public health and environmental pollution control. Therefore, in this article, the investigation and application of a number of nanometal oxides that are used in the separation of these dangerous substances, as well as the factors affecting the separation process, have been briefly discussed. Manuscript profile
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