Journal of Environmental Health Science & Engineering33CHEMICAL DENITRIFICATION OF NITRATE FROM GROUNDWATER VIA SULFAMIC ACID AND ZINC METAL141146A. SabzaliM. GholamiA. R. YazdanbakhshA. KhodadadiB. MusaviR. Mirzaee20151209Nitrate contamination in drinking water can cause methemoglobinemia, which is especially detrimental to infants and nursing mothers. Batch experiments in two units for catalytic reduction of nitrate from groundwater with Zn catalyst and sulfamic acid were conducted. The system includes chemical denitriphication (ChemDen reactor) and electrolytic recovery reactoers. A batch study was conducted to optimize parameters like pH, sulfamic acid concentration, Zn concentration, temperature and reaction time governing the ChemDen process. The concentrations of remained nitrate and Zn were measured at the end of the reactions. Results showed that near to 100% of nitrate decreased and the quantity of
remained nitrate washttps://ijehse.tums.ac.ir/index.php/jehse/article/view/83https://ijehse.tums.ac.ir/index.php/jehse/article/download/83/82Journal of Environmental Health Science & Engineering33A SYSTEM DYNAMICS-BASED CONFLICT RESOLUTION MODEL FOR RIVER WATER QUALITY MANAGEMENT147160M. KaramouzM. AkhbariA. MoridiR. Kerachian20151209System dynamics approach by simulating a bargaining process can be used for resolving conflict of interests in water quality management. This approach can be a powerful alternative for traditional approaches for conflict resolution, which often rely on classical game theory. Waste load allocation models for river water quality management determine the optimal monthly waste load allocation to each point load. Most of these approaches are based on the multi-objective optimization models and do not consider
the existing conflicts. In this study, a system dynamics-based conflict resolution model is presented for monthly waste load allocation in river systems. In this model, the stakeholders and decision-makers negotiate with each other considering their relative authorities, aspirations and dissatisfactions. System dynamics approach is actually used for simulating the bargaining process among the players. The model incorporates the objectives and preferences of stakeholders and decision-makers of the system in the form
of utility functions and could provide a final agreement among the players. To evaluate the spatial and temporal variation of the concentration of the water quality indicator in the system, a water quality simulation model is also linked to the conflict resolution model. In the proposed model, a pre-assigned utility is allocated to different water users and the results are evaluated using a simulation model. The allocated utilities are tested and adjusted in order to provide an agreement between the assumed utilities and the utilities assigned by the model. The proposed model is applied to the Karkheh River system
located in the southwest of Iran. The results show that the model can effectively incorporate the preferences of the players in providing a final agreement and the runtime of the proposed model is much less than the classical conflict resolution models. It is also shown that the waste load allocation can significantly reduce number and duration of the periods in which the river water quality violates the standards.https://ijehse.tums.ac.ir/index.php/jehse/article/view/84https://ijehse.tums.ac.ir/index.php/jehse/article/download/84/83Journal of Environmental Health Science & Engineering33EVALUATION OF DUSTFALL IN THE AIR OF YAZD161168K. NaddafiR. NabizadehZ. SoltanianzadehM. H. Ehrampoosh20151209Air pollution phenomenon in urban areas is a consequence of industrial revolution. Since air pollution destroys the environment, destruction, many countries have devoted research work to this issue and have developed considerable amount of programs to control air pollution. There are a lot of industrial activities in addition to sandstorms that lead to the spread of dust and particles in the air in Yazd city. In this work, dustfall and its relation with climate conditions in Yazd were determined. The study method was
descriptive and cross-sectional. The sampling was done from 25/8/2005 to 19/3/2006 in 4 month long periods. (end of August-end of September) , (end of September –end of October), (end of October-end of November), (19 February-19 March). The sampling was done in Jomhuri bulevard, Homafar Square, Shahid Beheshti Square , Seyd Gole Sorkh Ave. and Kashani Street by dust fall jar method. Results of this research shows that maximum concentration of dust fall was in the first period equal to 9.74 g/m².mo and minimum concentration was in the third period (October-November) and was equal to 3.13 g/m².mo. the maximum concentration was related to Homafar Square (8.91 g/m².mo) and the minimum concentration was related to Kashani Street was equal to 3.68 g/m².mo. Concentration average of dustfall
in 4 the periods was 6.49 g/m².mo. The volatile part of dustfall was 50.6% and the fixed part was 49.4%.
Correlations between concentration of dustfall, humidity, temperature, wind speed, and precipitation and the corresponding Pvalue were calculated and the results show that there is a direct relationship between the amount of dustfall and wind speed while humidity and precipitation are inversely proportional to the amount of dustfall. No relationship was found between temperature and dustfall concentration.https://ijehse.tums.ac.ir/index.php/jehse/article/view/85https://ijehse.tums.ac.ir/index.php/jehse/article/download/85/84Journal of Environmental Health Science & Engineering33SOLID PHASE MICROEXTRACTION FOR TRACE ANALYSIS OF BENZENE IN ENVIRONMENTAL MONITORING169176S. J. ShahtaheriH. R. HeidariF. GolbabaeiM. AlimohammadiA. Rahimi Froshani20151209Conventional analytical method for organic pollutants in water requires extraction of the pollutants, using hazardous solvent. Solid phase microextraction is a solvent free equilibrium extraction method, in which, proper calibration can allow quantitative determinations of organic pollutants at a very good sensitivity without the use of any organic solvent. Because individual volatile organic carbons are generally exposed
environmentally and present in urine only at trace levels, a sensitive and accurate determination technique is essential. So, this study describes the optimization of headspace solid phase microextraction (HS-SPME) followed by GC-FID for benzene in spiked urine. Through this investigations, the parameters affecting the extraction and gas chromatographic determination of analytes, including extraction time, temperature,
desorption temperature, desorption time, salt addition, sample pH, sample volume and sample agitation were studied. An optimized headspace extraction was carried out at 30°C for 6 min in the presence of 0.2 g/mL of NaCl in the sample solution. Desorption of the analytes was carried out for 60 sec. at 250°C. The optimized procedure was also validated with three different pools of spiked urine samples and showed a good reproducibility over six consecutive days as well as six within-day experiments. The accuracy, linearity, detection limits were also determined. The headspace solid phase microextraction, GC-FID
technique provides a relatively simple, convenient, practical procedure, which was here successfully applied to determine benzene in spiked urine.https://ijehse.tums.ac.ir/index.php/jehse/article/view/86https://ijehse.tums.ac.ir/index.php/jehse/article/download/86/85Journal of Environmental Health Science & Engineering33SITE SELECTION OF MUNICIPAL SOLID WASTE LANDFILLS USING ANALYTICAL HIERARCHY PROCESS METHOD IN A GEOGRAPHICAL INFORMATION TECHNOLOGY ENVIRONMENT IN GIROFT177184H. JavaheriT. NasrabadiM. H. JafarianG. R. RowshanH. Khoshnam20151209Municipal solid waste generation is among the most significant sources which threaten the global environmental health. As an ideal selection depends on considering several independent factors concerning land use, socio economy and hydrogeology, the use of a multi criteria evaluation method seems inevitable. Taking benefit of geographic information system as a tool in combination with geographical information technology, equips the spatial decision support systems in appropriate site selection of sanitary landfills. The present study involves a kind of multi criteria evaluation method under the name of weighted linear combination by using geographical information technology as a practical instrument to evaluate the suitability of the vicinity of Giroft city in Kerman province of Iran for landfill. Water permeability, slope, distance from rivers, depth of underground watertable, distance from residential areas, distance from generation centers, general environmental criterion and distance from roads are the criteria which have been taken in to consideration in the process of analyzing.
Superposing all of the raster type layers including geomorphologic, hydrologic, humanistic and land use criteria in land suitability, the final zoning of appropriate, fairly appropriate and inappropriate districts have been identified. Considering relative priority of all criteria in comparison with others, a specific weight is designated to each criterion according to their total influence on the whole process of decision making. The results from the application of the presented methodology are zones for landfill
with varying zonal land suitability. Finally the zones will be ranked in descending order to indicate the priority of different options in front of the eyes of decision makers. The results achieved by this study may help policy makers of Giroft city by a variety of options for being considered as sanitary landfill locations.https://ijehse.tums.ac.ir/index.php/jehse/article/view/87https://ijehse.tums.ac.ir/index.php/jehse/article/download/87/86Journal of Environmental Health Science & Engineering33SOLID WASTE MANAGEMENT IN TABRIZ PETROCHEMICAL COMPLEX185192M. A. AbduliM. AbbasiT. NasrabadiH. HoveidiN. Razmkhah20151209Tabriz petrochemical complex is located in the northwest of Iran. Major products of this industry include raw plastics like, polyethylene, polystyrene, acrylonitrile, butadiene, styrene, etc. Sources of waste generation include service units, health and cure units, water, power, steam and industrial processes units.
In this study, different types of solid waste including hazardous and non hazardous solid wastes were investigated separately. The aim of the study was to focus on the management of the industrial wastes in order to minimize the adverse environmental impacts. In the first stage, locating map and dispersion limits were prepared. Then, the types and amounts of industrial waste generated in were evaluated by an inventory and inspection. Wastes were classified according to Environmental Protection Agency and Basel Standards and subsequently hazards of different types were investigated. The waste management of
TPC is quite complex because of the different types of waste and their pollution. In some cases recycling/reuse of waste is the best option, but treatment and disposal are also necessary tools. In this study, using different sources and references, generally petrochemical sources, various solid waste management practices were investigated and the best options were selected. Some wastes should be treated before land filling and some of them should be reused or recycled. In the case of solid waste optimization, source reduction ways were recommended as well as prior incineration system was modified.https://ijehse.tums.ac.ir/index.php/jehse/article/view/88https://ijehse.tums.ac.ir/index.php/jehse/article/download/88/87Journal of Environmental Health Science & Engineering33PRODUCTION AND RECOVERY OF POLY-Β-HYDROXYBUTYRATE FROM WHEY DEGRADATION BY AZOTOBACTER193198A. KhanafariA. Akhavan SepaheiM. Mogharab20151209Three strains of Azotobacter chroococcum were studied to produce poly-β hydroxybutyrate as a
inclusion body by whey degradation. Optimum degradation whey results were obtained when using whey broth as a fermentation medium without extra salt, temperature at 35 °C and pH 7 (Phttps://ijehse.tums.ac.ir/index.php/jehse/article/view/89https://ijehse.tums.ac.ir/index.php/jehse/article/download/89/88Journal of Environmental Health Science & Engineering33EVALUATION OF THE QUALITY AND SELF PURIFICATION POTENTIAL OF TAJAN RIVER USING QUAL2E MODEL199204N. MehrdadiM. GhobadiT. NasrabadiH. Hoveidi20151209Tajan River is among significant rivers of Caspian Sea water basin. Pollution sources that threaten the quality of water in Tajan River may be classified in to two categories namely point and non-point sources. Major pollutants of latter category are Mazandaran wood and pulp, Paksar dairy products and Sari Antibiotic production factories, as well as 600-dastgah residential area. On the other hand, non-point sources whose waste is considered as a distributed load consist of Sari municipal wastewater and agriculture-related pollutants that are drained towards the river. In order to model the quality of river flow, Qual2E model is taken in to consideration. Considering TDS, the river quality is completely
acceptable in cold seasons. However, in spring and summer the value of this parameter is increased and this causes some restrictions in the use of this water for irrigation of specific sensitive crops. Agricultural activities and consequent irrigated waters are the major causes of higher reported TDS values in warm seasons. Current status of DO is completely acceptable and this is highly related to the relative high value of width on depth ratio along the river. BOD and COD locate in a fairly poor condition. Quality
deterioration is more noticeable in cold seasons. Higher rate of precipitation and consequent greater runoff generation towards the river basin justify the relative increase of mentioned parameters in fall and winter. Generally, non-point pollution sources are more contributed in deterioration of Tajan River water quality.https://ijehse.tums.ac.ir/index.php/jehse/article/view/90https://ijehse.tums.ac.ir/index.php/jehse/article/download/90/89Journal of Environmental Health Science & Engineering33ALTERNATIVE MICROBIAL INDICATORS OF FAECAL POLLUTION: CURRENT PERSPECTIVE205216V. K. TyagiA. K. ChopraA. A. KazmiArvind Kumar20151209Worldwide coliform bacteria are used as indicators of fecal contamination and hence, the possible presence of disease causing organisms. Therefore, it is important to understand the potential and limitations of these indicator organisms before realistically implementing guidelines and regulations to safeguard our water resources and public health. This review addresses the limitations of current faecal indicator microorganisms and proposed significant alternative microbial indicators of water and wastewater quality. The relevant literature brings out four such significant microbial water pollution
indicators and the study of these indicators will reveal the total spectrum of water borne pathogens. As E.coli and enterococci indicates the presence of bacterial pathogens, Coliphages indicate the presence of enteric viruses, and Clostridium perfringens, an obligate anaerobe, indicates presence of parasitic protozoan and enteric viruses. Therefore, monitoring a suite of indicator organisms in reclaimed effluent
is more likely to be predictive of the presence of certain pathogens in order to protect public health, as no single indicator is most highly predictive of membership in the presence or absence category for pathogens.https://ijehse.tums.ac.ir/index.php/jehse/article/view/91https://ijehse.tums.ac.ir/index.php/jehse/article/download/91/90Journal of Environmental Health Science & Engineering33"MENTAL HEALTH STATUS OF EMPLOYEES IN SUBSTATIONS OF ELECTROMAGNETIC FIELDS AT EXTREMELY LOW FREQUENCY IN TEHRAN "217221A. R. ZahiroddinA. R. Shafiee KandjaniN. Mahdavi Hezaveh20151209With regard to the relationship between exposure to electromagnetic fields and development of potential biological system impairments and increasing number of these fields, the current research was conducted in 2004 on 101 employees of high voltage centers to determine the role of working in these fields on mental health. One hundred and one employees were exposed to electromagnetic field at 50 Hz found from 230 kV current.We used SCL-90-R test and compared the subjects with the control group.Data analysis showed that the mean scores of the case group in Global Severity Index and Positive Symptom Total with significant difference were higher than that of the control group (Phttps://ijehse.tums.ac.ir/index.php/jehse/article/view/92https://ijehse.tums.ac.ir/index.php/jehse/article/download/92/91