List of Articles SO2

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  1 - Interaction of SO2 gas with the pristine and B&O atoms doped AlNNTs: A DFT study
  Mahdi Rezaei Sameti
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  2 - Evaluation of amount, emission factors and concentrations of SO2, NO2 and CO in ILAM Gas Refinery
  rouineh rahimi Nabiollah Mansouri Ali Asghar Alsheikh Alireza Mirzahoseini
  10.30495/jest.2020.40777.4503
  Background and Objective: Determination of pollutant emission factors by time is the most important initial data in air pollution modeling. EPA's AP 42 documents provide the most comprehensive emission factor system for all industries based on process type, fuel, and co More

  Background and Objective: Determination of pollutant emission factors by time is the most important initial data in air pollution modeling. EPA's AP 42 documents provide the most comprehensive emission factor system for all industries based on process type, fuel, and control types. Target of this study, wasto investigate concentrations, emission factors of SO2, NO2 and CO in Ilam gas refinery.Method: In this study, concentrations of SO2, NO2 and CO and other required parameters such as temperature, pressure, flow rate and diameter of the 6 main stacks were measured by direct field measurements by Testo 350 XL. By results of these measurements and measurements of previous years in the refinery, the mean average for the two normal scenarios and the worst condition, and then the emission values ​​were calculated. Data analysis was carried out with a confidence level of 95%.Findings: The estimated secondry, hourly, daily, monthly, and annual emissions from Ilam gas refinery was calculated and analyzed based on 2 normal and worst-case scenarios. Field measurement of flue concentrations showed that the highest concentrations of carbon monoxide (3565 ppm) and sulfur dioxide (5099 ppm) relates to SRU1 unit, the highest produced nitrogen dioxide (188 ppm) produced by SRU2, 1396 were the most polluted year according to the measured gases. The results of environmental measurements showed that CO at the sewage station is, 4/12 ppm and in Mehran road with an undetectable amount, the lowest amount of NO2 in the Chegae with 0.6 and Mehran road with the undetectable, the lowest amount, the amount of SO2 at the laboratory point with a maximum of 0.13 ppm and in the housing camp with an undetectable amount, the lowest It was.Discussion and Conclusion: Considering that the amount of environmental pollution and concentration of pollutants in the production units are more significant. So, planning for corrective actions to reduce emission of pollutants in production units, seems to be necessary. As well as the recovery and reduction of feed of flaring, can have a significant impact on the emission of pollutants.  Manuscript profile
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  3 - The Feasibility of Using EBDS to Control the Pollutants of Industrial Plants and to Remove SO2 and NOx
  Davood Kahforoushan Jafar Soltanmohammad zadeh Esmaeil Fatehifar
  The emission of the flue gases from industrial units affects the ambient air quality. These pollutants have a strong impact on humans’ health and environment, and therefore should be removed. The Electron-Beam method is an effective and economical way for simultan More

  The emission of the flue gases from industrial units affects the ambient air quality. These pollutants have a strong impact on humans’ health and environment, and therefore should be removed. The Electron-Beam method is an effective and economical way for simultaneous removal of pollutants, and could be an alternative for conventional methods. In this paper, the technical and economic considerations for the removal of SO2 and NOx as well as the application of this technology in related industries are studied. The results show that the EB method presents many economic and technical advantages compared with the conventional methods. This method could be a very effective way for the control of air pollutants in industrial units. Moreover, if the energy costs for EB are reduced, it can be used in  less developed countries Manuscript profile
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  4 - Identification of lichens around Sarcheshme copper plant and investigation of the effect of pollutants from plant on their cover and density
  Sahar Lotfian Ali Ahmadi Moghadam Ali Asghar Masoumi
  Background and Objective: SO2 and other pollutants have negative effects on the environment. Activity of Sarcheshme copper plant releases high amount of gases into the environment from reflective and converter furnaces per hour. These cases reflective and converter furn More

  Background and Objective: SO2 and other pollutants have negative effects on the environment. Activity of Sarcheshme copper plant releases high amount of gases into the environment from reflective and converter furnaces per hour. These cases reflective and converter furnaces contain 2.6% and 4.8% SO2, respectively. This study was conducted to examine the impact of these gases on the lichen flora. Method: For this purpose, lichen samples from 35 stations on a 5 km radius around the furnaces and according to the pattern of SO2 dispersion in three main directions were collected and identified.  Cover and density of lichens were also measured. Results: Identification of lichens showed that twenty five species and genera were new for Kerman and were reported for the first time. Results of measuring and comparing density and cover of lichens showed that in the north-east direction, where the highest SO2 pollution was measured, density and cover of lichens were less than other sites. The density and cover were affected in the west and south-east directions respectively. Density and cover in the control station with the similar ecological conditions but no pollution in the air were at higher level as compared to other stations. Conclusion: According to the results, it was determined that density and cover of lichens were affected by environmental pollutants. Generally it can be concluded tha lichen species in areas with high SO2 levels will be lower, due to the mortality and destruction of sensitive species. Manuscript profile
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  مهدی صادقی زهرا عابدی فریده عتابی معصومه ترکی
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  6 - 2
  منصور غیاث الدین جعفر نوری امیرحسین گیتی پیما
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  2 Manuscript profile
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  7 - Social (External) Costs of NOx, SO2 and CO2 Emissions from Energy Sector (Power Plants) in Iran
  Nastaran Rahimi Narges Kargari Hassan Samadyar Mohamman Nikkhah Monfared
  In this research social (external) cost of NOx, SO2 and CO2 emissions from energy sector (powerplants) in Iran were estimated. For the first time, we used benefit transfer method and by adjustinginternational coefficients of social costs, these costs estimated for each More

  In this research social (external) cost of NOx, SO2 and CO2 emissions from energy sector (powerplants) in Iran were estimated. For the first time, we used benefit transfer method and by adjustinginternational coefficients of social costs, these costs estimated for each kind of power plants (includingsteam, gaseous, and combined cycle). Different scenarios in this research are consisting of carbontrading, life statistical indexes, etc. At first level we survey 5 selected power plants (for case study) inIran and then the results generalized to all power plants.Social (external) costs for 3 above mentioned gases; each type of power plants and for one kilowatthours of electricity was estimated. The range of social (external) cost for each Kwh of electricity is690 to 1330 Rials. The results define that average social (external) cost per kilowatt hours is about1330 Rials. Manuscript profile
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  8 - Modeling for Estimation of the Damage Posed by SO2 Emitted from Power Plants on Qazvin Urban Structures (Case Study: Shahid Rajaee Power Plant)
  Elham Mojaver Faramarz Moattar Soheil Sobhanardakani Seyed Ali Jozi Seyed Masud Monavari
  Background and Objective: In this study, a model for measuring the effects and the physical-economic consequences of air pollutants emitted from Power Plants on urban buildings facades was developed. For the case study, the effect of SO2 pollutant emitted from Rajaee Co More

  Background and Objective: In this study, a model for measuring the effects and the physical-economic consequences of air pollutants emitted from Power Plants on urban buildings facades was developed. For the case study, the effect of SO2 pollutant emitted from Rajaee Combined-cycle Power Plant on Qazvin’s buildings’ facades was studied.Methods and materials: To develop this model, the Gaussian plume method was used to estimate the air pollution dispersion and impact pathway assessment (IPA) to calculate the air pollutant external costs. The damage costs of SO2 due to the corrosion of building materials, soiling, and consequently an increase in cleaning expenses of each square meter of urban buildings’ facades were localized. After the validation of the output results of the developed model, the external costs based on the wind speed and different atmospheric stability classification were estimated. Different atmospheric stability classes were examined using the Pasquil-Gifford (P-G) classification.Findings: Based on the facade’s material, the highest external costs were related to the white cement with 36575 dollars (849 million Rials). For the thatch façade, which is the local material of the region, the external cost was estimated to be 5376 dollars (1247 million Rials).Based on the wind speed, the highest external cost was obtained for the wind 1m/s with 139026 dollars (3254 million Rials) and the lowest cost was 352 dollars (82 million Rials) for the wind speed of 20 m/s.For the atmospheric stability classification, the lowest external cost in extremely unstable class (A) and the highest external cost in neutral class (D) have been measured. The external cost due to the SO2 pollutants for the city of Qazvin was 0.009 dollars (2162 Rials) For each megawatt-hour generated electricity.Conclusion: The results showed that the materials compatible with the local region can have lower external costs compared with the new materials used in the buildings.Keywords: damage analysis, SO2, combined cycle power plant, external cost, building facade Manuscript profile
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  9 - Synthesis of ternary Ce2O3/La2O3/Fe3O4 oxides as a potential catalyst for SO2 reduction by CH4 to sulfur
  Abdol Hossein Khangah Mohammad Javad Sarraf Habib Ale Ebrahim Masoumeh Tabatabaee
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  10 - A survey on the amount of the usage of the ISO214 in the Persian abstracts of the library and information sciences post graduate dissertations in Islamic Azad university-Tehran North branch and Science & Research branch during 2001 to 2007
  Mehrdokht Vazirpour Keshmiri Maryam Sedehi
  Purpose: This research aims to compare the  Dissertation abstracts of MLIS students in Islamic Azad university-Tehran North branch and Science and research branch with the ISO214 abstracting standard during the years 2001 to 2007. Methodology: The methodology of t More

  Purpose: This research aims to compare the  Dissertation abstracts of MLIS students in Islamic Azad university-Tehran North branch and Science and research branch with the ISO214 abstracting standard during the years 2001 to 2007. Methodology: The methodology of the study was documentation-content analysis and applied method. For data collection, the Iso214 checklist was used . The sample population  which is 156 out of 262 available dissertations is selected according to  probability sampling in a classified systematic method. The collected information was analysed Based on descriptive and inferential statistics (T and F distribution test and chi-square test) by spss statistical software. Findings: findings showed that controling  the standard abstracts writing in dissertations of both universities had an acceptable condition, in recent years, applying the standards of abstract writing is increased, the indicated rate of 14.8 %during the years, 2005 and 2006 also the rate of 53.9 %during 2007 is a good condition. The abstracts belonging to both genders are almost in the same condition from standard point of view. In terms of subject categories , most of the dissertations belong to the  field of information technology and information communication  with 20.5%. The highest level of meeting the Iso 214 standard was for "location of the abstract" and "use of third person pronoun" with 100 % and the least standard meeting were "keywords taken from the abstract contents" with 17.9%. Coclusions: Analyzing data of  the research indicated that there was  no meaningful differences between the two groups (t distribution=-./27) and two genders of writers (t distribution= -./44) according to Iso214. There was a meaningful differences between the abstract evaluation with iso214 and different years. There is also a meaningful co-relation between the level of abstract evaluations and the professor ranks according to the Iso standard (chi-square=6/12 Manuscript profile
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  11 - Generic Plan of Food Safety Management System Based on ISO 22000:2005 for Aflatoxin Control in Raw Pistachio Processing Units from Raw Material Reception to Packaging
  A. Fallah M. Bolandi L. Nouri
  10.22034/jon.2012.515722
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  12 - The Effects of Polyethylene Terephthalate Surface Treatment by SO2 Plasma on the Polymer Hemocompatibility
  F. Ahmadi A. Asef nejad M.T Khorasani M. Daliri Joopari
  Polyethylene terephthalate polymer is a member of the polyester polymer family that has high mechanical and chemical resistance. The use of artificial vessel prostheses made of polyethylene terephthalate with acceptable physical and biological characteristics is a suita More

  Polyethylene terephthalate polymer is a member of the polyester polymer family that has high mechanical and chemical resistance. The use of artificial vessel prostheses made of polyethylene terephthalate with acceptable physical and biological characteristics is a suitable replacement for damaged vessels. The aim of this study is to investigate the effects of modifying the surface of polyethylene terephthalate with SO2 plasma on the hemocompatibility of the polymer.Polymer films were exposed to SO2 gas plasma. In order to evaluate surface chemistry changes, FTIR infrared spectroscopy test was performed. 3D imaging with atomic force microscope (AFM) was performed to examine the structural changes and MTT assay and platelet adhesion tests were carried out to investigate the changes in cell activity and coagulation.The results of infrared spectroscopy in the sample treated by plasma with SO2gas confirmed the presence of peaks related tothe symmetrical bonds of SO2in SO3 or SO4 in the sample. AFM images showed the surface structure changes. The MTT assay test proved the non-toxicity of the SO2gas plasma surface modification method. Adhesion and cell and platelet activity tests also showed the anti-clotting effect of the modified polymer.The use of plasma method with SO2gas is a suitable method to modify the surface and to increase blood compatibility of polyethylene terephthalate polymer, and probably can be used for making artificial blood vessels. Manuscript profile