Water Pollution

Open Access Article

1 - Simultaneous Removal of Copper And Lead Metal Ions From Polluted Water Using Polymer Membrane Modified With Amorphous Silica Nanoparticles
Bahareh Kamyabmoghadas Nadia Tamimi

Introduction: Heavy metals are one of the main water pollution in environmental problems. There are various methods to remove these pollutions, one of the best methods in this field is membrane processes. The purpose of this research is to remove heavy metals because th More

Introduction: Heavy metals are one of the main water pollution in environmental problems. There are various methods to remove these pollutions, one of the best methods in this field is membrane processes. The purpose of this research is to remove heavy metals because they are toxic and have many harmful effects on the health of living organisms and the environment. For this purpose, modified polymer membranes were used, which can remove a large percentage of copper and lead ions dissolved in water at the same time. Materials and Methods: In this research, polyether sulfone polymer, N-dimethylacetamide solvent and amorphous silica nanoparticles were used as modifiers. The parameters of the experiment were polymer weight percentage (22-18-14%), nanoparticles weight percentage (0.0-0.1-0.2 weight percent of polymer) and pressure (12-17-22 bar). Results and Discussion: The optimal conditions obtained were 22% polymer membrane, 2% additives at 12 bar pressure, and the result of the test in these conditions was the removal of 74% and 82% of lead and copper, respectively. From the prepared membranes, Fourier transmission infrared spectroscopy (FTIR), scanning electron photography (SEM) and thermometric analysis (TGA) tests were performed. In FTIR analysis, peaks related to functional groups were determined. By examining the SEM test, the presence of silica nanoparticles in the polymer membrane was determined, and the TGA analysis in the modified membrane confirmed the increase in the thermal resistance of the membranes. Conclusion: According to the results obtained from the TGA test, it was found that the membrane modified with silica nanoparticles causes more delay in the degradation time, and the thermal resistance of the membranes modified with silica nanoparticles increases more, as a result, the presence of silica nanoparticles increases the stability of the membrane. According to the comparison and examination of the FT-IR test related to pure nanoparticles, pure polymer membrane and membranes with nanoparticles, in addition to identifying the peaks of the functional group of polyether sulfone polymer, the presence of the peak of silica nanoparticles in the modified membranes was also determined. that the presence of silica nanoparticles inside polyether sulfone polymer membranes was established. Manuscript profile

Open Access Article

2 - Feasibility study of nitrate surface absorption by mineral pumice from Nitrate solution on a laboratory scale
Farzad Bakhshandegan Moghaddam Parisa Hoseini

The surge in population and imprudent consumption of water resources have created many challenges in securing sufficient water for sustaining human life. To supply part of the water demand for agriculture, the reuse of gray water is recommended. However, many decontamin More

The surge in population and imprudent consumption of water resources have created many challenges in securing sufficient water for sustaining human life. To supply part of the water demand for agriculture, the reuse of gray water is recommended. However, many decontamination methods are cost-prohibitive and pose challenges in sludge disposal after purification. The purpose of this research is to evaluate the feasibility of nitrate absorption by a mineral pumice adsorbent from nitrate solutions. The present study was conducted as a two-factor factorial experiment and complete randomized design with three replications. The study involved sampling mineral pumice with diameters of 1 cm, and 5 cm and gradation ranging from 1 to 5 cm over 45 days. The samples were calibrated by spectrophotometric method at a wavelength of 470 nm. Results showed that mineral pumice influenced nitrate absorption from the solution. The amount of nitrate in the control treatment was 0.88 grams per liter on the first day. The highest absorption occurred on the 20th day for the 1 cm soil gradation, resulting in a decrease to 0.62 grams per liter, which indicated 0.36 grams per liter of nitrate absorption. Larger gradations, however, showed the highest absorption on the 30th day. The 5 cm treatments and 1-5 cm gradation showed a reduction (absorption) of 0.19 and 0.27 grams per liter of nitrate, respectively, compared to the control treatment. According to the results, mineral pumice, an economical resource, can be used to absorb nitrate from nitrate solutions. Moreover, the used mineral pumice could find applications as a soil texture modifier or fertilizer in various fields beyond nitrate absorption. Manuscript profile

Open Access Article

3 - Modeling the quality of water and wastewater treatment using neural networks and hybrid neural networks
Ahmad Jafarian Fatemeh Ghanbary Rahim saneeifard

One of the most important and fundamental factors in the life of living things is water. Therefore, water pollution is a major environmental problem and prevent water pollution and providing smart methods for water treatment is so important. Equipping engineering scienc More

One of the most important and fundamental factors in the life of living things is water. Therefore, water pollution is a major environmental problem and prevent water pollution and providing smart methods for water treatment is so important. Equipping engineering sciences with intelligent tools and artificial intelligence in the diagnose quality of wastewater treatments can reduce the errors of the methods. This paper presents a simple and hybrid neural network with statistical logistic regression method for modelling of the output quality of wastewater treatment. The proposed intelligent method plays an important role in the quality of wastewater treatment and can be used by artificial intelligence researchers and environmental engineers. Comparison of the predicted results by simple neural network and hybrid one showed that the efficiency of the hybrid model and it is suitable for our purpose. results of research proved that the new method has the highest efficiency with minimum errors. Manuscript profile

Open Access Article

4 - Economic Growth, Human Development and Environmental Pollution in the Selected Countries
منیره Dizji سلماز Gholami nejad

This research examines the relationship between environmental pollution and economic growth of selected countries. We used panel data and employed the environmental hypothesis of Kuznets, for 22 countries for the period 2005-1997. In this study, the level of water conta More

This research examines the relationship between environmental pollution and economic growth of selected countries. We used panel data and employed the environmental hypothesis of Kuznets, for 22 countries for the period 2005-1997. In this study, the level of water contamination is used as an index for pollution and GDP per capita for economic growth. The adjusted human development index that includes many social variables such as health, political rights, civil liberties, adult literacy are also considered. Other variables include theindustrial value-added share of GDP, population density and the degree of economic openness .The results show that:There exist an inverted U relationship between pollution and economic growth, which confirms the Environmental hypothesis of Kuznets.Environmental pollution has a negative relationship with the human development index and the degree of economic openness.Environmental pollution has a positive relationship with industrial value-added.JEL Classification: O15,O40,Z19 Manuscript profile

Open Access Article

5 - Assessment the effects of vegetation degradation on runoff changes and water pollution potential in the sub-watersheds of the Eastern Azerbaijan province
Ardavan Zarandian Majid Ramezani Mehrian

10.30495/wsrcj.2021.18547

Vegetation is an important factor affecting runoff, quantity and quality of water in a watershed. This study investigates the effects of vegetation reduction in the eastern watershed of Lake Urmia on two parameters of runoff and the potential for water pollution .The WW More

Vegetation is an important factor affecting runoff, quantity and quality of water in a watershed. This study investigates the effects of vegetation reduction in the eastern watershed of Lake Urmia on two parameters of runoff and the potential for water pollution .The WWPSS model was used to simultaneously assess the three parameters. Vegetation shows a fraction of the types of grass, tree and land without vegetation that were obtained from MODIS VCF satellite images. Runoff was calculated as accumulated water budget downstream. This model also provides an indicator to determine the potential level of water pollution. The results showed that rangeland cover decreased by an average of about 32%. Also, the average runoff production increased by 2.6, 3.16, 2.9 and 3.25 percent, respectively, in the existing conditions in 4 sub-basins of Aji Chai, Qaleh Chai, Marduq Chai and Sufi Chai compared to the situation before the reduction of vegetation coverage. According to the results, the difference in water pollution potential between the baseline and existing conditions in different parts of the watershed has fluctuated in the range between -9 to15% and an average of 0.6%. This change has increased the pollution load in some places and decreased it in others; but in general, it has led to incremental changes in water pollution potential with an average of about 2.5% in the total watershed. The method used can be used to quantify and map ecosystem water changes and its application in environmental assessment and management. Manuscript profile

Open Access Article

6 - Seismic Vulnerability of Groundwater Resources Based On Failure of Fuel Pipeline Network Using DRASTIC Method and Artificial Neural Network (Case Study: Tehran Plain)
Mahdi Haghighi Ali Delnavaz Poorya Rashvand Mohammad Delnavaz

10.30495/wsrcj.2023.74690.11398

Background and Aim: Groundwater is one of the main sources of sustainable development in human societies, and due to the supply of water needed by the drinking, agriculture, and industry sectors, their pollution will have destructive effects. In addition, the fuel trans More

Background and Aim: Groundwater is one of the main sources of sustainable development in human societies, and due to the supply of water needed by the drinking, agriculture, and industry sectors, their pollution will have destructive effects. In addition, the fuel transmission network is of great importance due to the storage and transportation of petroleum products. The importance of this system increases in various aspects during events such as earthquakes. Pollution of underground water sources due to leakage from the fuel transmission system is one of the secondary effects of the earthquake and leaves an adverse effect on the environment and human health. This research is focused on evaluating the vulnerability of groundwater due to the failure of the urban fuel transmission network against the occurrence of an earthquake, which was conducted in the form of case studies on the fuel transmission network of Tehran city and the Tehran-Karaj plain aquifer. Method: In this research, a unified model for seismic damage analysis and risk assessment under conditions of uncertainty in the fuel transmission network of Tehran city has been defined and implemented. In this model, the consequences of damage to the fuel transmission network under three earthquake scenarios (magnitude 5, 6, 7 on the Richter scale) have been evaluated on the pollution of underground water in Tehran. In addition, strategic strategies have been presented in order to reduce the effects of groundwater pollution caused by earthquakes. The proposed model uses a multi-layer perception artificial neural network (ANN). Also, the DRASTIC model has been used to evaluate groundwater pollution based on fuel leakage from the damaged fuel transmission network. In these studies, strategic planning has been done based on the use of robust decision-making techniques and the degree of robustness in order to reduce the probable effects of groundwater pollution by using the theory of minimum-maximum regret. Results The results of this research showed that the developed artificial neural network model has a high ability to assess damage(failure-leakage) in the pipeline of the fuel transmission network so that the root-mean-square error (RMSE) and the correlation coefficient R are equal to 0.029 and 0.98 respectively. Based on the results, the amount of damage to the pipeline in the first scenario (Mw=5) is equal to 15 leaks and 2 failures, in the second scenario (Mw=6), it is equal to 25 leaks and 7 failures and in the third scenario (Mw=7) the number of leaks was 27 and 9 failures. According to the results obtained from aquifer pollution under three earthquake scenarios, it is clear that in the scenario of an earthquake with Mw=5, 30% of the aquifer has medium pollution potential and 55% of the potential of low pollution, in the scenario of an earthquake with Mw=6, 45% The aquifer has medium pollution potential and 18% has low pollution potential, and in the earthquake scenario with Mw=7, 55% of the aquifer has medium pollution potential and 22% has low pollution potential. In line with the strategic planning of aquifer pollution reduction, different strategies were evaluated against different scenarios with the minimum-maximum regret criterion. Finally, three strategies were presented to reduce the pollution of underground water resources. According to the results, the use of the strategy (insulation of the environment around the pipeline) led to a 70% reduction in groundwater pollution, and the use of the strategy (implementation of an intelligent seismic system to cut off the fluid flow in the event of an earthquake), which was known as a robust strategy, led to aquifer pollution has been reduced by 75%. Conclusion: Based on obtained results from the performance evaluation of the model developed in this research, it was found that the presented model had an acceptable performance in predicting the seismic vulnerability of the fuel transmission pipeline and assessing the pollution of the aquifer. This model has the ability to be implemented in different urban areas and to evaluate the performance of the fuel transmission system under different earthquake scenarios, as well as to evaluate groundwater pollution. Also, based on the results of the strategic management of groundwater pollution control, implementing an intelligent seismic system to cut off the fluid flow in the event of an earthquake can be used as a comprehensive solution to reduce environmental damage to groundwater resources specifically in the seismic regions. Manuscript profile

Open Access Article

7 - The synthesis of magnetite nanoparticles functionalized by Nb (V) metalloporphyrin for the selective removal of flouride ions from aqueous media
Tahere Poursaberi Mostafa Hassanisad Kamran Torkestani

Abundance of amounts of fluoride in water resources has a harmful effect on human health. A new magnetic nanoadsorbent was developed by treating Fe3O4 nanoparticles with 3- aminopropyltriethoxysilane and Nb (V)- metalloporphyrin and applied to remove excessive More

Abundance of amounts of fluoride in water resources has a harmful effect on human health. A new magnetic nanoadsorbent was developed by treating Fe3O4 nanoparticles with 3- aminopropyltriethoxysilane and Nb (V)- metalloporphyrin and applied to remove excessive fluoride from aqueous solutions. Nb (V) - metalloporphyrin was attached to Fe3O4 via the interaction between the carboxylic groups and the amine groups of APTES. Fourier Transform Infrared Spectroscopy (FTIR), elemental analysis, X-ray diffraction (XRD), and Scanning Electron Microscopy (SEM) were used to characterize the synthesized nanoparticles. The effect of pH, contact time, sorbent dosage and some co-existing anions present in aqueous solution was investigated. The results indicated that under optimal conditions (i.e. pH: 5.5, contact time: 30 min and sorbent dosage: 100 mg) the fluoride removal efficiency of 94.0% can be achieved. Regeneration of fluoride adsorbed material could be possible with NaOH and the modified magnetic nanoparticles exhibited good reusability for four cycles. Manuscript profile

Open Access Article

8 - Elimination of Lead and Cadmium in Water, Using Green Coated Fe3O4 Nanoparticles
F. Nematollahi Sh. Mozaffari F. Zmani Hargalani M. Zeinali

Introduction: Various absorbents have been studied for removing heavy metals from water. One of the most effective removals is iron oxide nanoparticles. In recent years many studies have been carried out for modifying the surface of the nanoparticles and increasing its More

Introduction: Various absorbents have been studied for removing heavy metals from water. One of the most effective removals is iron oxide nanoparticles. In recent years many studies have been carried out for modifying the surface of the nanoparticles and increasing its effectiveness and efficiency. Materials and Methods: In this paper coated iron oxide nanoparticles were prepared using Polylophium involucratum extract. To examine the structure of the absorbent the infrared spectrometer instrument and SEM were used to check the size of nanoparticles.  the average size of them were determined 60 nm. Results: The synthesized coated nanoparticles were used to eliminate lead and cadmium after optimization conditions (pH of 6, absorbent weight of 20 mg, and time of 4 minutes) in water samples. Magnetic green coated nanoparticles have many advantages such as non-toxicity, biocompatibility, shorter extraction time, avoiding the use of organic solvents, low cost, ease of use, high accuracy, recovery and adsorption capacity due to the nanostructure and high ratio of surface to volume. Conclusion: Functionalized nanoparticles by extract of the plant is able to link up with heavy metal ions and increase the efficiency of the nanoparticles in the removal of these two heavy metals. Manuscript profile

Open Access Article

9 - Analysis of Organophosphorus Pesticide Diazinon Residue in Water Samples of Abbas Abad River, Hamedan, Iran
Sahar Orfi Yeganeh Soheil Sobhanardakani Saeed Jamehbozorgi

10.30495/jest.2021.8358

Background and Objective: Increasing population growth and the need to develop agricultural products have increased the use of pesticides and thus the pollution of water resources as one of the environmental problems. Therefore, this study was conducted to determine the More

Background and Objective: Increasing population growth and the need to develop agricultural products have increased the use of pesticides and thus the pollution of water resources as one of the environmental problems. Therefore, this study was conducted to determine the residual concentration of diazinon pesticide in the water of Abbasabad River in Hamedan in 2014.Method: Water samples were collected from four stations along the Abbas Abad River. In the laboratory, after sample preparation, diazinon residues were determined using a spectrophotometric method. All statistical analyses were performed using the SPSS software.Findings: The maximum mean concentration of diazinon residues (µg/L) in samples of spring and summer seasons were 97.0 ± 10.2 and 202 ± 13.7, respectively. Also, the mean contents of pesticide residues in the water samples in both seasons were higher than the maximum contaminant levels (MCLs) established by WHO and EPA.Discussion and Conclusion: Due to exceeding the average residual concentration of pesticides in the evaluated water samples, it is necessary to pay attention to issues such as training gardeners in order to use pesticides correctly and in principle. Also, measures should be considered in order to use the water of this river for drinking or farming cold-water fish.  Manuscript profile

Open Access Article

10 - Investigation of Arsenic Anomalies and Its Probable Origins in Maragheh Plain
shahram baikpour Zahra Arghavan

10.22034/jest.2020.32651.4069

Background and Objective: The objective of this study is evaluating hydrochemical properties of groundwater in Maragheh area, including: Cations, Anions, Total Dissolved Solids, Electrical Conductivity, pH and Heavy metals (As, Fe, Mn) and investigating the statistical More

Background and Objective: The objective of this study is evaluating hydrochemical properties of groundwater in Maragheh area, including: Cations, Anions, Total Dissolved Solids, Electrical Conductivity, pH and Heavy metals (As, Fe, Mn) and investigating the statistical relations between these parameters and Probable Origins of contamination. Methods: In order to carry out ground water quality monitoring, and evaluate the controlling processes and to determine cations and anions sources of the groundwater, 34 wells were selected for sampling from July 2014 and April 2015and water quality parameters were measured and sent to the Laboratory Applied Research Center of Geological Survey & Mineral Explorations of Iran (Elburz).  Data analysis was performed through SPSS software and Factor Analysis & Pearson correlation coefficient test. Results: The chemical composition of the surface and groundwater is controlled by several processes such as mineral dissolution, increasing evaporation from the aquifer, irrigation return flow, saline water intrusion in the Ajbashir Plain, geological status of the area, anthropogenic inputs. Discussion and Conclusion: The concentration of arsenic based on WHO standard is 10μg/L, while the maximum arsenic concentration in the study area is 308.5μg/L and the mean concentration is 44μg/L. According to the results, it relies that arsenic probable sources can be concerned to industrial waste water in Maragheh and Bonab industrial complex, agricultural activities (using pesticides and insecticides) and geological factors (existence of Shemshak formation), rocks and sediments derived from the erosion of these rocks and coal mines (Khormazard). Manuscript profile

Open Access Article

11 - Assessing the Environmental Risks of De-icing Materials Used in Winter Operations (A case of Study of the Hydrochemical Quality of Hamedan-Bahar Basin)
Amir Jamshidi Amir Reza Goodarzi Parisa Razmara

10.22034/jest.2021.38006.4383

Background and Objective: Despite the wide application of de-icing substances to the roadways, the sewage produced can have negative impacts on local ecosystems. Hence, the present study was conducted for assessing the effects of road salt use throughout the winter in H More

Background and Objective: Despite the wide application of de-icing substances to the roadways, the sewage produced can have negative impacts on local ecosystems. Hence, the present study was conducted for assessing the effects of road salt use throughout the winter in Hamedan on the hydro-chemical quality of Hamedan-Bahar basin. Hamedan is one of the major tourist destinations and one of the main agricultural poles in Iran, and thus, its water resources contamination may pose serious risk to the health of the whole country. Method: The modeling of under-ground water flow paths in the study area revealed that the flow of rain and snow water in the city is mainly towards Hamedan-Bahar basin (as one of the main drinking water and agricultural water supplies in the region). Therefore, the 24 wells in the study area were sampled and the hydro-chemical characteristics of the obtained water samples as well as their changing trends over the past 10 years were determined and analyzed.    Findings: The results indicated a gradual increase in the minerals and solid materials in the water of the basin. This, considering the meaningful correlation values obtained (R2≥0.89) between the salt contents and Cl- and Na+ concentrations, could be attributed to the use of de-icing materials. The rate of pollutants in some of the samples was found to be 10 times as much as the permissible national standard and international values. Moreover, based on the Wilcox diagram, the water in most stations could be classified as C3S1 (decreasing the soil fertility and resulting in ecophysiological abnormalities in crops) and even as C4S1 (completely harmful for irrigation). A similar distribution of de-icing compounds and arsenic were observed in the under-ground water of the basin.  Discussion and Conclusion: The increase in the pollution and the decline in hydro-chemical properties of the basin due to the accumulation of de-icing materials, not only pose direct hazardous effects to human health and agricultural lands but can also intensify the mobility of the heavy metals in soil-water profiles of the region. Therefore, it is suggested that winter operations in the city be planned and carried out using modern methods and facilities (such as anti-icing program, eco-friendly deicers, asphalt mixture with anti-icing additives, hydronic heating pavement), so that the negative environmental impacts can be controlled as much as possible. Manuscript profile

Open Access Article

12 - Determination of Diazinon in Water of Rice fields of Amol city by Thin Layer Chromatography Technique
Reza Arjmandi Mitra Tavakol Mansoreh Shayeghi

Increasing growth of population, undesirable economic situations of the world especially the third world, shortage of foodstuffs, hungriness, illness, they are all problems to be solved from economical and agricultural aspects. Protecting agricultural products from pest More

Increasing growth of population, undesirable economic situations of the world especially the third world, shortage of foodstuffs, hungriness, illness, they are all problems to be solved from economical and agricultural aspects. Protecting agricultural products from pests and diseases which inflicts considerable damage to farmers and cultivators each year which is another puzzle to be played and sorted. For this purpose, each year repeated, irregular and uninformed pesticides sprayings are carried out too many times which unfortunately cause resistance of pests against these drugs as well as environmental pollution and it can disaffect other live creatures. It is therefore necessary that more extensive research to be performed on agricultural pesticides and their relative health sciences in the light of bioenvironmental remarks. Mazandaran province is one of the agricultural poles of our country. Diazinon is one the most consumed agricultural pesticides in order to destroy the pests in this region. In this research study of residua of pesticide (Diazinon) in water, Rice field in Amol city, Mazandaran province was performed in year 2007. Findings:  The sampling was carried out on an accidental basis and the samples were taken from each station from the whole width of the river at each interval and mixed and studied the primary experiment and extractions which were carried out by using di-cholero methane and Acetone and finally the amount of pesticide residue was determined by using the H.P.T.L.C (High Performance Thin Layer Chromatography) method and CATS-4 software. According to the ANOVA, trails were in statistical analysis .Time of sampling of water was reported in one day after poisoning. Results show: Diazinon insecticide: this insecticide is used to destroy the stem boring caterpillar of Rice and Citrus tree pests frequently and was observed in the sampling stations 1 and 4 for 2 weeks after poisoning and in station 2 and 3 for one month after poisoning and in station 5 up to second month after application. The greatest amount of Diazinon poisons in station 1 was 1.14ppm which was greater than European Standard. This study cleared physical and chemical properties of the studied insecticides، such as fumigation quality، ecological conditions and type of soil، cause the decrease and finally disappearance of insecticides during the period of plant growth. Manuscript profile

Open Access Article

13 - Evaluation of environmental instability indicators with emphasis on water, soil and noise pollutions using Analytical Hierarchy Process (AHP) in Ahvaz metropolis
MohammadAli Firoozi Mostafa Mohammadi Deh Cheshmeh Jafar Saeedi

10.22034/jest.2017.11070

Background and Objective: Cities are considered as the main factor causing instability in the world. In fact, according to the inherent complexity of cities in terms of environmental issues, identification of the main factors in achieving sustainability is necessary. Th More

Background and Objective: Cities are considered as the main factor causing instability in the world. In fact, according to the inherent complexity of cities in terms of environmental issues, identification of the main factors in achieving sustainability is necessary. The aim of the present study was to evaluate the indicators of environmental instability in Ahvaz metropolis with a focus on indicators of water, soil and noise pollutions. Method: This study is a descriptive-analytical one using an applied method. In this context, after explaining the concept of urban sustainability and urban instability and identifying relevant criteria, according to the study, the conversion of criteria to quantitative indicators was done and the index and sub-index in AHP model were prioritized. To perform spatial analysis of the data, GIS software was used and the most important explanatory factors to assess the environmental indicators of instability in Ahvaz, with emphasis on the index of water, soil and noise pollutions were studied. Findings: Findings showed that considering the water pollution index, five area with the impact of 0.327 had the the highest weight value among the urban areas while six areas with the impact of 0.033 had the lowest value than other areas with water pollution in Karun river. In terms of soil pollution, four areas with effect coefficient of 0.331 had the the highest rate of soil pollution, and eight regions with effect coefficient of 0.024 had the least pollution. In terms of noise pollution, the region with effect coefficient of 0.336 had the highest weight value among other regions, while eight regions with effect coefficient of 0.02 had the least pollution.    Discussion and Conclusion: Results showed that Ahvaz is in unstable environmental conditions and its current environmental condition is significantly far away from sustainability criteria. With this interpretations of situation, awareness about ecological sustainability of urban areas and understanding of the situation could play an important role in improving the planning and optimal allocation of resources to improve people's welfare Urban sustainability, Environmental instability, Water pollution, Soil pollution, Noise pollution, Ahvaz Metropolis Manuscript profile

Open Access Article

14 - Investigation of Pb, Zn and Ni in Watershed of Anzali Wetland (case study: Goharrood River)
Aryamen Ghavidel Faramarz Moattar

Heavy metals are the most important pollutant factors of water resources specially rivers. Entrance ofmetals in natural aquatic ecosystems arises from discharging of domestic, agricultural and industrialsewage. With respect to the health risks possibility and also impor More

Heavy metals are the most important pollutant factors of water resources specially rivers. Entrance ofmetals in natural aquatic ecosystems arises from discharging of domestic, agricultural and industrialsewage. With respect to the health risks possibility and also importance of aquatic ecosystems, in thisstudy the amounts of Pb, Zn, Ni elements in Goharrood river of Rasht were measured. The sampleswere collected in nine stages from five stations. Experiments were done by atomic absorptioninstruments. Results showed that the average amounts of Pb, Zn and Ni all along the river wererespectively 3830, 156 119,31 15 ppb. Maximum amounts were measured as follows: Pb 168 ppbin station 3, Zn 513 ppb in station 4 and Ni 60 ppm in station4.ANOVA doesn't show significant difference between the measured average amounts of Pb, but thereis significant difference between the average amounts of Zn and Ni elements in different stations. Thispaper shows that the stations inside the city measured a larger amount of the elements. This can be aresult of discharging large amounts of domestic and industrial waste water to this part of the river.Rates of the elements in Goharrood river were found to be over the maximum acceptable ratesdetermined by the department of environment for keeping aquatic organisms alive since Goharroodriver is one of the routes for water to enter Anzali wetland, there is a possibility of increased biologicalrisks in fish and human bodies. Manuscript profile

Open Access Article

15 - Investigation of Heavy Metals (Cd, Cr, Ni, Pb, Zn) in Islamshahr Groundwater Resources and their Regional Distribution Pattern in GIS
Fatemeh Valinejhad Amir Hessam Hassani Mojtaba Sayadi

Background and Objective: Nowadays, pollution of groundwater by heavy metals is encreasing. Heavy metals are one of the most widespread cause of pollution in water and the presence of increasing levels of these metals in the environment is causing serious concern in pub More

Background and Objective: Nowadays, pollution of groundwater by heavy metals is encreasing. Heavy metals are one of the most widespread cause of pollution in water and the presence of increasing levels of these metals in the environment is causing serious concern in public opinion owing to their toxicity. This study aims to assess the concentration and distribution pattern of heavy metals (Cadmium, Chrome, Nickel, Lead and Zink) in groundwater of an industrialized region in Eslamshahr which located in the southeastern of Tehran   Method: Presently, groundwater is the predominant source of drinking water in this town. For this purpose, 92 samples were taken from 23 wells in 4 seasons.The concentration of heavy metals in the samples was measured by flame atomic absorption spectrophotometry. ARC GIS software was applied for preparing the distribution patterns. Results: The results showed that chrome and zinc concentrations were lower than the permissible level in the drinking water. However, the concentration of cadmium in 8.7% of samples taken in winter were higher than the permissible level determined in drinking water standard of Iran. Nickel concentration in winter was 8.7% higher than the permissible level. Lead concentration of samples in 47.8% and 4.35% of samples taken in summer and winter were higher than the permissible level, respectively. The high level of water pollution in southern part of Eslamshahr is attributed to the large number of industries, big farm lands, application of chemical fertilizers and the pesticides containing heavy metals, busy main and  secondary roads , and most importantly, the hydraulic slope from northwest to southeast of this region.  Manuscript profile

Open Access Article

16 - Methods of wastewater refining in extracting and processing of crude oil in order to prevent water pollution
Maryam Rafati Hamid Farshadfar

Background and Objective: Due to its significant volume and pollution, the extracting and processing of wastewater from crude oil is a serious challenge in oil industries. The discharge of these wastewaters to the acceptor environment or to reuse them requires the provi More

Background and Objective: Due to its significant volume and pollution, the extracting and processing of wastewater from crude oil is a serious challenge in oil industries. The discharge of these wastewaters to the acceptor environment or to reuse them requires the provision of environmental standards. Therefore, the study of different wastewater refine methods is of great importance. Materials and Methods: In this study, the different processes of wastewater refinery produced in oil industry units included the first, second (physicochemical methods), and third stages of refinery methods (biological) were studied.Results: The first refinery stage is used as the most widely used method based on water weight dispute, oil, and sand, and its biggest drawback is the lack of gathering particles smaller than 150 microns. The second refinery stage included flocculation and air flotation methods and the efficiency of this method for water polluted by oil is 95%, and one of the most disadvantages of this method are high costs of chemical supplies and maintenance. The third refinery stage is the biological method which has the highest efficiency in wastewater refinery, and disadvantages of this method including high electrical and mechanical equipment, and also high costs due to high energy consumption.Discussion and Conclusions: The second and third refinery stages are expensive and one can be stated that the combination of the second or third method with the first stage is achieved as the most efficient method in extracting and processing of crude oil. Manuscript profile

Open Access Article

17 - The Effect of Water Pollution on Health Economics: A Panel Data Approach
Parvaneh Salatin Saeed Tajik

Water pollution is chemical, biological, microbic pollution, and pollution by waste materials in lakes, rivers, oceans and underground waters. Pollutants that cause water pollution include a wide range of chemical materials, pathogens, sensory and physical changes like More

Water pollution is chemical, biological, microbic pollution, and pollution by waste materials in lakes, rivers, oceans and underground waters. Pollutants that cause water pollution include a wide range of chemical materials, pathogens, sensory and physical changes like increase in temperature and changes in color. Water pollution, whether biological, that is due to the existence of pathogenic microbes, or chemical, that is due to the existence of polluting chemical materials, causes many illnesses and several disorders to individual or public health. Therefore, the main purpose of this article investigation is the impact of water pollution on death rate and Health Expenditure as indicators of health economics in a the selected European countries. This article is an applied research, causal and inferential research by methodology. The results of the estimation models using Fixed Effect shows that water pollution has a significant and positive effect on death rate and Health Expenditure as indicators of health economics in the selected countries.  The scarcity of water resources and their pollution is an alarm call indicating the shortage of healthy water resources in the future. To counter this crisis, water consumption management is the best option Manuscript profile

Open Access Article

18 - Environmental Impacts of PET- PTA Petrochemical Industries (Case Study: Mahshahr Economic Special Zone)
saeeid Malmasi seyed ali Jozi seyed masood Monavari elahe Jafarian Moghadam

Petrochemical industries pollutants especially heavy metals affect human health and environment. In this study, impacts of poly ethylene terephthalate petrochemical industries in Mahshahr economic special zone are evaluated with Analytical Hierarchy Process (AHP) by wei More

Petrochemical industries pollutants especially heavy metals affect human health and environment. In this study, impacts of poly ethylene terephthalate petrochemical industries in Mahshahr economic special zone are evaluated with Analytical Hierarchy Process (AHP) by weighting and synthesizing of health human and environmental damage criteria. In this region, main petrochemical industries are constructed close to fiords. Hence pollutants due to these industries have detrimental effects on fiords as most important ecosystem with high biodiversity. Health human damage evaluation is achieved by expressing the impacts of each pollutant on employee and local population health. Environmental damage assessment requires on intuitive expression pollutants density and environmental sensitivity. Finally nine main pollutants are evaluated according to the kind of studied petrochemical industry, TSS, Oil & Grease, COD, Heavy metals, SOX, NOX, CO2, H2S and PM. these pollutants are then compared to derive a environmental scores. Results indicate that water pollution is most important issue and TSS and Oil & Grease with 0.235, 0.326 scores from waste water discharged as highest priority should be controlled in studied area. Air pollution due to gaseous emission is second priority.    Manuscript profile

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19 - Investigation of Nitrate Concentration in Drinking Water of Different Regions of Mashhad
Ali Javid Sadaf Fathi Fatemeh Asadollah nezhad

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20 - Assessing the potential of groundwater resources quality in the villages of Damavand city
maryam Zerang Lida Salimi Mojtaba Sayadi

Awareness of the quality of water resources is essential for assessing pollution trends for each region. The study area is located in the villages of Damavand city in Tehran, which is used to study the water quality parameters . Within 8 months , from January to August More

Awareness of the quality of water resources is essential for assessing pollution trends for each region. The study area is located in the villages of Damavand city in Tehran, which is used to study the water quality parameters . Within 8 months , from January to August 2016, has focused on sampling and measuring physical parameters (Ec, TDS, turbidity, pH, hardness and alkalinity) of the water from 11 wells in the villages of Damavand city, which was chosen according to the location of the village's residential texture and its proximity to agricultural areas as sample wells. Also, by sampling and analyzing for two times, the quality of each parameter in the studied area and finally a qualitative map for each parameter was prepared. The results of this study suggest that given the fact that the southern marginal areas of Damavand area, especially the village of Wadan, have the highest concentration in most water quality parameters, this area can be considered as a narrow zone of high-risk man-made pollution hazard due to the rise of the rock floor and reduced permeability. In addition, the state of governance of the village of Wadan at the end of sedimentation basin has caused the role of the effectiveness of natural (geological) and hydrogeological factors in this section to be quite evident, the effects of which are increasing the concentration of physical parameters in this area.  Due to the fact that some of the qualitative parameters have been observed in the groundwater resources of the area and, on the other hand, the only source of water supply in the Damavand area is groundwater, it is necessary that the quality of drinking water of the inhabitants of the area should always be considered. Manuscript profile

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21 - Relationship Between Heavy Metals and Some Soil Physico-Chemical Properties in Garangochay Watershed
ramin salmasi

Heavy Metal contamination in Garangochay watershed was reported. Primary experiments of the stream water samples showed Heavy Metal concentrations were several times higher than standard ones. The purpose of this research is that with attention to Heavy Metal pollution More

Heavy Metal contamination in Garangochay watershed was reported. Primary experiments of the stream water samples showed Heavy Metal concentrations were several times higher than standard ones. The purpose of this research is that with attention to Heavy Metal pollution of the water samples, are the soils polluted with these metals. If answer is positive, which soil properties are related to these metals?  For this purpose, after field investigations and the soil sampling and analyses of soil physico-chemical properties and heavy metals, correlation coefficients and cluster analyses of data were determined. Results showed that Cu with OC and Al, Cr, and Mn with clay percentages of soil samples had positive correlation. Five main clusters were determined with cluster analysis that was in agreement with correlation coefficients. Positive correlations between clay and OC of the soil samples with some metals indicate that these 2 soil components with metals fixing, reduce their release into environment. Other researches are necessary to determine geology and anthropogenic sources of these metals. Manuscript profile

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22 - Evaluation of groundwater quality in Dayyer city Bushehr using groundwater quality index (GQI)
Zahra Mojarad Abdul Rahim Pazira Tayebeh Tabatabaie

10.30495/jonass.2021.1922476.1006

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23 - A zwitterion metal-organic framework for Fluoride removal from aqueous solution
Mostafa Aliakbari mahdi Borghei Roya Mafi Gholami

Abstract: Excess fluoride is one of the water pollutants in the world, which is removed from the water by chemical methods to produce sludge, and other methods such as R.O. also have problems in electricity consumption and wastewater disposal. Metal-organic complexes ar More

Abstract: Excess fluoride is one of the water pollutants in the world, which is removed from the water by chemical methods to produce sludge, and other methods such as R.O. also have problems in electricity consumption and wastewater disposal. Metal-organic complexes are one of the newest adsorbents used in the separation of anions. In this study, MOF 1 was used to remove fluoride from aqueous solution. Existing factors such as pH, contact time, adsorbent amount and temperature were examined. Based on the results, the MOF synthesized in acidic media absorbs more fluoride ions. Contact time of up to 20 minutes has a significant effect on the removal of fluoride ions and then its effect is greatly reduced. The amount of adsorbent used is up to saturation and the water environment has no significant effect on the absorption of fluoride ions. Also, the results of kinetic studies confirm the pseudo-second-order kinetic model for fluoride adsorption reactions in the presence of MOF1. Also in this research, zinc metal is used as a zebrafish as a central metal with the aim of reducing the environmental MOF. Manuscript profile

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24 - Environmental risks Assessment of the Construction Project using the EFMEA Method with Emphasis on the risks affecting water pollution
Ebrahim Nohani eraj charlangbadil

The purpose of this paper was to Environmental risks Assessment of the Construction Project using the EFMEA Method with Emphasis on the risks affecting water pollution. In this study, through field visits to the construction project, the project activities were fully id More

The purpose of this paper was to Environmental risks Assessment of the Construction Project using the EFMEA Method with Emphasis on the risks affecting water pollution. In this study, through field visits to the construction project, the project activities were fully identified and then the environmental risks were identified. In order to estimate the amount of risks, according to experts, checks and tables, the EFMEA method was used. Following the work process, solutions and control measures were presented and the risk number was recalculated. According to the results of this study, the highest number of risks was related to secondary accidents (250) and the lowest number of risks was related to manual freight transport activity (8). After presenting control measures, it was observed that the numerical value of environmental risks, especially risks affecting water pollution has decreased. Manuscript profile

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25 - A zwitterion metal-organic framework for Arsenic removal from
Mostafa Aliakbari Mehdi Borghei Roya Mafi Gholami

Abstract: Because of its significant toxicological effects on the environment and human health, arsenic (As) is a major global issue. In this study, a zirconium-based metal-organic framework, {[Zn3L3 (BPE) 1.5]•4.5 DMF}n , was synthesized using both solothermal and More

Abstract: Because of its significant toxicological effects on the environment and human health, arsenic (As) is a major global issue. In this study, a zirconium-based metal-organic framework, {[Zn3L3 (BPE) 1.5]•4.5 DMF}n , was synthesized using both solothermal and mechanochemical methods and successfully applied in the arsenic removal reaction. Adsorption efficiency was high in the presence of this MOF and equilibrium was achieved within 20 minutes for As (III) and As (V) at a concentration of 1 mg / l of contaminants. The maximum adsorption efficiencies of As (III) and As (V) at pH 7 were 62 and 81%, respectively. The adsorbent showed high stability in the pH range of 2-12 and the adsorbent can be recovered for at least nine consecutive periods without significant reduction in its efficiency. The adsorption process can be described by a pseudo-second-order kinetic model and the adsorption mechanism was of the electrostatic interaction type. Manuscript profile

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26 - مدیریت پایدار منابع آب زیرزمینی با استفاده از برنامه ریزی چندمعیاره (مطالعه موردی دشت کاشمر)
سمیه شیرزادی لسکوکلایه رضا اسفنجاری کناری

پدیده خشکسالی و پیامدهای آن باعث کاهش سطح آبهای زیرزمینی، فقدان تغذیه مناسب خاک، خشک شدن منابع آب سطحی و برداشت بیشتر از منابع آب زیرزمینی می‌شود که در مجموع این موارد باعث انتقال آب شور به آبهای زیرزمینی میشود و ظرفیت برداشت از سفره آب زیرزمینى را محدود More

پدیده خشکسالی و پیامدهای آن باعث کاهش سطح آبهای زیرزمینی، فقدان تغذیه مناسب خاک، خشک شدن منابع آب سطحی و برداشت بیشتر از منابع آب زیرزمینی می‌شود که در مجموع این موارد باعث انتقال آب شور به آبهای زیرزمینی میشود و ظرفیت برداشت از سفره آب زیرزمینى را محدود کرده و کیفیت آب را کاهش می‌دهد. در این مطالعه از روش VIKOR  برای تعیین بهترین راه حل قابل اجرا بر اساس معیارهای انتخاب شده شامل وضعیت بارش باران منطقه در طول سالهای مختلف، نفوذپذیری خاک، شاخص شیب زمین و شاخصهای کیفیت آب از جمله  SAR، RSC و شوری جهت تعیین کیفیت منابع آب زیرزمینی دشت کاشمر و محدودیتهای استفاده از زمین به کار گرفته شد. نتایج نمونه برداری در دشت کاشمر نشان داد که کیفیت آب در مسیر زیرزمینی دشت کاشمر از شمال به جنوب کاهش می‌یابد. استفاده بیش از حد از منابع آب زیرزمینی، سبب افت سطح آب زیرزمینی و افزایش شوری، کاهش کیفیت آب کشاورزی و محدودیت استفاده از زمین شده است. افزون بر این، نتایج مدل در سال های 1389 و 1393 نشان داد که اگر شکل فعلی برداشت بیرویه منابع آب زیرزمینی ادامه یابد، این امر منجر به حرکت شوری به مناطق بالادستی با شوری کم میشود. بنابراین، برای مدیریت پایدار منابع آبهای زیرزمینی، کنترل برداشت بی‌رویه و به حداقل رساندن آسیب به سطح آبهای زیرزمینی شهرستان ضروری است، کارشناسان تغییر الگوی کشت در زمینهای کشاورزی و استفاده از روشهای کم آب آبیاری را پیشنهاد دهند. Manuscript profile

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27 - Hydrogeochemical evaluation of groundwater in the north of Qazvin Plain
B. Talebi N. Sajjadi T. Sharmad

Groundwater has become the most important natural resource in recent years due to lack of rainfall and less surface water. In this Study, the effect of geological and agricultural activities on groundwater resource area in north of Qazvin Plain has been studied. For thi More

Groundwater has become the most important natural resource in recent years due to lack of rainfall and less surface water. In this Study, the effect of geological and agricultural activities on groundwater resource area in north of Qazvin Plain has been studied. For this research to study the qualitative parameters, 17 wells were sampled in 2013. Initially for estimation of the impact of geology on groundwater samples, water type and saturation index (SI) of various minerals were studied, then the impact of human factors on groundwater resources in the North of Qazvin plain was investigated by using linear regression analysis. Results showed that the amount of dissolved minerals from the west to the east of the study area is on the rise. Ions of sodium, bicarbonate and sulfate are dominant ions, mostly as a result of the dissolution of halite, gypsum and carbonate which entered the groundwater. Linear regression analysis showed that high correlation of nitrate, sulfate, chloride, potassium, and total dissolved solids (TDS) reflects the impact of agricultural activities on groundwater. Nitrate concentration was found to be much higher than WHO 2011 standards (50 ppm) in western (335 ppm) and eastern (103 ppm) parts of study area as a result of agricultural activities. Manuscript profile

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