University Of Tehran PressPollution2383-451X6320200701Carcinogen Risk Assessment of Mutagen X in Chlorinated Drinking Water in West of Tehran, Using Probabilistic Approaches4694807653810.22059/poll.2019.290223.693ENM.BaghebanNanotechnology Research Centre, Faculty of Pharmacy, Tehran University of Medical Sciences, P.O.Box14176-14411, Tehran, Iran Reference Laboratory of Water and Wastewater, Water and Waste Water Company of Tehran, P.O.Box 14155-1595, Tehran, IranH.KaryabSocial Department of Health Research Center, Qazvin University of Medical Sciences, P.O.Box 34197-59811, Qazvin, Iran.M.BaghdadiSchool of Environment, College of Engineering, University of Tehran, P.O.Box 14155-6135, Tehran, Iran0000-0001-9816-764XA.MohammadiNanotechnology Research Centre, Faculty of Pharmacy, Tehran University of Medical Sciences, P.O.Box14176-14411, Tehran, Iran
Department of Drug and Food Control, Faculty of Pharmacy, Tehran University of Medical Sciences, P.O.Box 14176-14411, Tehran, IranB.AkbarpourReference Laboratory of Water and Wastewater, Water and Waste Water Company of Tehran, P.O.Box 14155-1595, Tehran, IranA.KeshtkarDepartment of Health Sciences Education Development, School of public Health, Tehran University of Medical Sciences, P.O.Box 14176-13151, Tehran, IranJournal Article20190905The present study aims at evaluating the risk of Mutagen X (MX) (3-chloro-4-(dichloromethyl)-5-hydroxy-2 (5H)-furanone) and adverse health effects, associated with direct ingestion of chlorinated drinking water in west of Tehran, supplied by chlorinated drinking water from surface and underground water sources. For one year, MX concentrations in tap water samples has been measured for consumers in four different zones in western Tehran. It has been found that average MX concentration in the whole study area is 24.16 ng/L, with the highest concentration being in Zone 1 with a value of 38 ng/L. Also, the role of water sources, seasonal changes, and effective factors such as Total Organic Carbon (TOC) have been evaluated on MX formation. The highest of excess lifetime cancer risk (ELCR), estimated as 0.0037E-05, belongs to Zone 1, which uses surface water to supply drinking water, while the lowest can be seen in Zone 4, being 0.0021E-05. This latter zone utilizes underground water as the water source. In all zones, the highest risk of excessive cancer is related to winter, ranging from 0.0045E-5 in Zone 1 to 0.0023E-5 in Zone 4. The estimated number of cancer cases for Zones 1 to 4 have been 0.012, 0.016, 0.016, and 0.004, respectively, based on their population. The estimated average risk and the number of ELCR, caused by exposure to MX, through direct ingestion of drinking water have been 0.0030E-5 and 0.047, respectively, in the entire studied area for the duration of one year.https://jpoll.ut.ac.ir/article_76538_89d357db2005292b824f5e0dfa914da6.pdfUniversity Of Tehran PressPollution2383-451X6320200701Emission and Environmental Goals in Decision Making Modeling for Load Dispatch4915017653910.22059/poll.2019.290225.694ENM. H.KarimDepartment of Energy and Resource Economics, Kharazmi University, Tehran-Iran0000-0002-7114-8702H.MemarianDepartment of Natural Resources and Environment, University of Birjand – IranY.ValitabarDepartment of Energy and Resource Economics, Kharazmi University, Tehran-IranJournal Article20191005The main purpose of this research is to determine the generation quantity of each generator in a power system. In this way, not only will the electricity demanded by the system be supplied, but the cost of fuel along with the level of pollution can be minimized. Obviously, calculation of the optimal layout of power plants with the aim of minimizing fuel costs and pollutants level contributes to sustainable socio-economic development. For this purpose, modeling a multi-objective decision making framework by means of the weighting method makes it possible to attain the mentioned goals. After modeling the goals and constraints of the power system, the problem associated with economic-environmental load dispatch with the Institute of Electrical and Electronics Engineers 30-Bus data is optimized by means of the Lagrange approach. Moreover, the sensitivity analysis in connection with the weight of short-term costs is conducted to determine the final point of the system usage. Results show that if the importance coefficient of the fuel cost reduction is 1 (W=1), the economic and environmental load dispatch will pose some problems for the economic load dispatch. In contrast, if the importance coefficient of the reducing fuel cost is zero (W=0), the economic and environmental load dispatch will become problematic for environmental load dispatch. Incidentally, the trade off curve of the fuel cost and the pollutant amount involves the functional information for the system operator. The current research is mainly innovative in its use of a method to reduce fuel consumption and environmental impacts on emission at optimization process. This can, in turn, lead to generation of sustainable energy.https://jpoll.ut.ac.ir/article_76539_a2955c80146ec286428cd1f668d5262c.pdfUniversity Of Tehran PressPollution2383-451X6320200701Decolorization of Reactive Black-5 High Concentration by Vermicompost Microflora and Detoxification of By-Products by UV-C/H2O2 Post-Treatment5035117654010.22059/poll.2019.288500.675ENZ.EmadiDepartment of Environmental Health Engineering, School of Health, Shahrekord University of Medical Sciences, P.O. Box 8813733435, Shahrekord, IranM.SadeghiDepartment of Environmental Health Engineering, School of Health, Shahrekord University of Medical Sciences, P.O. Box 8813733435, Shahrekord, Iran0000-0002-0751-1255F.Mohammadi-moghadamDepartment of Environmental Health Engineering, School of Health, Shahrekord University of Medical Sciences, P.O. Box 8813733435, Shahrekord, IranR.SadeghiDepartment of Environmental Health Engineering, School of Health, Shahrekord University of Medical Sciences, P.O. Box 8813733435, Shahrekord, IranS.ForouzandehDepartment of Environmental Health Engineering, School of Health, Shahrekord University of Medical Sciences, P.O. Box 8813733435, Shahrekord, IranR.SadeghiDepartment of Chemical Engineering, Isfahan University of Technology, P.O. Box 8415683111, Isfahan, IranJournal Article20190905The presence of synthetic dyes in textile wastewater is a problematic issue for environmentalist. Nowadays, dye removal is practiced via different methods. Among all these methods, biodecolorization is an ideal technique. The present research apples vermicompost microflora to remove reactive black- C, pH = 7, and under anaerobic condition. At 36h, removal efficiencies of 94.79%, 94.06%, and 93.6% are obtained for concentrations of 800, 850, and 950 mg/ L, respectively. It has also been observed that when the initial concentration rises to 1400 mg/ L, the efficiency drops to 51.57% at 36h. Also, methyl red, methyl orange, eriochrome black-t, and acid blue-113 could be decolorized by the isolated bacterial strain with an efficiency of 94.29%, 92.10%, 90.83%, and 88.95%, respectively. Phytotoxicity Test shows that the parent form of reactive black-5 has not been toxic for the seeds (100% germination for Triticum aestivum and 90% for Maize). When reactive black-5 is treated with isolated bacterial strain under anaerobic condition, none of the seeds remain germinated which might be due to the possible formation of toxic aromatic amines intermediates. Therefore, ultraviolet C + 100 mM H2O2 has been used as the post-treatment process for detoxifying of by-products. After the integrated treatment of synthetic wastewater, containing RB-5, complete germination (100%) of Triticum aestivum and Maize is observed. In the post-treatment process, due to the generation and activation of hydroxyl radicals, the toxic aromatic amines compounds convert to the less toxic compounds.https://jpoll.ut.ac.ir/article_76540_ff68409e8c85acf57dd7fb185b6d066c.pdfUniversity Of Tehran PressPollution2383-451X6320200701Interfering effects of Iron(II) and Arsenic(III) in the Cerium-based adsorption technology in Bangladesh5135197654110.22059/poll.2020.290154.692ENM. A.AkborInstitute of National Analytical Research and Service (INARS), Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhanmondi, Dhaka-1205, Bangladesh
Department of Environmental Sciences, Jahangirnagar University, Savar, Dhaka- 1342, BangladeshM. M.RahmanDepartment of Environmental Sciences, Jahangirnagar University, Savar, Dhaka- 1342, Bangladesh0000-0002-5290-3821R.AkterDepartment of Environmental Sciences, Jahangirnagar University, Savar, Dhaka- 1342, BangladeshS.HossainDepartment of Environmental Sciences, Jahangirnagar University, Savar, Dhaka- 1342, BangladeshS.AhmedInstitute of National Analytical Research and Service (INARS), Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhanmondi, Dhaka-1205, BangladeshM. A. B.SiddiqueInstitute of National Analytical Research and Service (INARS), Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhanmondi, Dhaka-1205, BangladeshA.NaharInstitute of National Analytical Research and Service (INARS), Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhanmondi, Dhaka-1205, BangladeshMd. KhabirUddinDepartment of Environmental Sciences, Jahangirnagar University, Dhaka, Bangladesh.Journal Article20191004Arsenic (As) contamination in the groundwater of Bangladesh is one of the major public health concerns. It has become a challenge to remove As from groundwater and a great deal of efforts employed in this regards with limited success. Cerium oxide is one of the important medias of arsenic removal techniques. Nine units of cerium-based arsenic technology were tested with seven different well waters in five hydro-geological areas in Bangladesh. Interestingly, the same technology showed variable results in terms of As removal performance from well water. Therefore, this study aimed to investigate the reasons behind the variant performance of the As removal technology. The studied wells were contaminated with a range of 283 to 873 μg/L of arsenic, 0.35 to 10.4 mg/L of iron, 0.29 to 6.83 mg/L of phosphate, 32.5 to 49.5 mg/L of silicate, 0.08 to 0.25 mg/L of sulfate and pH range was 7.11 to 7.65. The cerium-based As removal technology consistently produced As safe water from three wells containing more than 80% As (III) of total arsenic (As) and >3 mg/L of iron and reduced As concentration to below 50 μg/L consistently but failed at other four wells containing less than 75% As (III) of tAs andhttps://jpoll.ut.ac.ir/article_76541_37e6e4e2119429cc706800caa00fb851.pdfUniversity Of Tehran PressPollution2383-451X6320200701Evaluation of PM2.5 Emissions in Tehran by Means of Remote Sensing and Regression Models5215297654210.22059/poll.2020.292065.706ENH.JafarianDepartment of Civil Engineering, Shahid Rajaee Teacher Training University, Tehran, IranS.BehzadiDepartment of Civil Engineering, Shahid Rajaee Teacher Training University, Tehran, IranJournal Article20191106Defined as any substance in the air that may harm humans, animals, vegetation, and materials, air pollution poses a great danger to human health. It has turned into a worldwide problem as well as a huge environmental risk. Recent years have witnessed the increase of air pollution in many cities around the world. Similarly, it has become a big problem in Iran. Although ground-level monitoring can provide accurate PM2.5 measurements, it has limited spatial coverage and resolution. As a result, Satellite Remote Sensing (RS) has emerged as an approach to estimate ground-level ambient air pollution, making it possible to monitor atmospheric particulate matters continuously and have a spatial coverage of them. Recent studies show a high correlation between ground level PM2.5, estimated by RS on the one hand, and measurements, collected at regulatory monitoring sites on the other. As such, the present study addresses the relation between air pollution and satellite images. For so doing, it derives RS estimates, using satellite measurements from Landsat satellite images. Monitoring data is the daily concentration of PM2.5 contaminants, obtained from air pollution stations. The relation between the concentration of pollutants and the values of various bands of Landsat satellite images is examined through 19 regression models. Among them, the Ensembles Bagged Trees has the lowest Root-Mean-Square Error (RMSE), equal to 21.88. Results show that this model can be used to estimate PM2.5 contaminants, based on Landsat satellite images.https://jpoll.ut.ac.ir/article_76542_212775091ebf7f6311816f2c3cbfa713.pdfUniversity Of Tehran PressPollution2383-451X6320200701Assessment of Disposal Scenarios for Solid Waste Management Using Fuzzy Rapid Impact Assessment Matrix; a Case Study of Khorramabad Industrial Estate5315417654310.22059/poll.2020.295451.735ENM.GhobadiDepartment of environment, Faculty of agriculture and natural resources, Lorestan University, IranM.AhmadipariSchool of environment, College of engineering, University of Tehran, IranM.PazokiSchool of environment, College of engineering, University of Tehran, IranJournal Article20200107The present paper tries to assess different scenarios for solid waste management in Khorramabad industrial park. It uses a new hybrid method of fuzzy Rapid Impact Assessment Matrix, and proposes the Fuzzy theory, the ranking method of which is innovated so that the accuracy and flexibility of the RIAM method could be improved. Four scenarios are studied, namely open dumping, sanitary landfill, gasification, and incineration. They are then evaluated in terms of their physical/chemical, biological/ecological, social/cultural, and economic/operational effects. Afterwards, two scenarios have been selected with the aim of energy production. The evaluation of these aspects for each scenario is in accordance to the expert's judgments and field study, with the results showing that sanitary landfill has had the least undesirable effects. Hence, this approach is selected as the best scenario for waste management in the studied area. According to the obtained results, it is suggested to consider sanitary landfills as the main part of the waste management hierarchy program of the studied area. Also, it is highly recommended to use the Fuzzy RIAM technique in similar studies and to compare the results with the new ones in order to examine the accuracy of the new improved method.https://jpoll.ut.ac.ir/article_76543_76d11e44260191381aa94c526f734b2e.pdfUniversity Of Tehran PressPollution2383-451X6320200701Modeling and Optimization of Arsenic (III) Removal from Aqueous Solutions by GFO Using Response Surface Methodology5435537654410.22059/poll.2020.296452.739ENF. S.TabatabaeiResearch Center for Environmental Pollutants, Qom University of Medical Sciences, Qom, Iran.0000-0003-2276-0871H.IzanlooResearch Center for Environmental Pollutants, Qom University of Medical Sciences, Qom, Iran.H.HeidariResearch Center for Environmental Pollutants, Qom University of Medical Sciences, Qom, Iran.N.VaeziResearch Center for Environmental Pollutants, Qom University of Medical Sciences, Qom, Iran.M.ZamanzadehDepartment of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, IranA.NadaliDepartment of Environmental Health Engineering, School of Public Health, Hamadan University of Medical Science, Hamadan, IranR.AaliResearch Center for Environmental Pollutants, Qom University of Medical Sciences, Qom, Iran.M.Asadi-GhalhariResearch Center for Environmental Pollutants, Qom University of Medical Sciences, Qom, Iran.0000-0003-3718-3261Journal Article20200122Arsenic is a highly toxic element for human beings, which is generally found in groundwater. Dissolved Arsenic in water can be seen as As+3 and As+5 states. The adsorption process is one of the available methods to remove Arsenic from aqueous solutions. Thus, this papers aims at removing Arsenic (III) from aqueous solutions through adsorption on iron oxide granules. The relation among four independent variables, namely the initial concentration of Arsenic (III), pH, adsorbent dose, and contact time have been investigated through Response Surface Methodology. Design-Expert software and Central Composite Design method have been used to design and analyze the experiments and results. Also, SEM and FTIR analysis have been conducted to characterize the absorbent morphology. The optimum initial concentration of Arsenic (III), pH, contact time, and adsorbent dosage are 30ppm, 5, 49.99min, and 8g/l, respectively. Under these optimum conditions, the Arsenic (III) removal efficiency is 67%. The predicted 2FI model shows the highest Arsenic removal coefficient (R2=0.887).https://jpoll.ut.ac.ir/article_76544_093bb1ee4737204b960546791c26b5e1.pdfUniversity Of Tehran PressPollution2383-451X6320200701Levels of Fine Particulate Matter Bound Trace Metals in Air of Glass Industrial Area; Firozabad5555687654510.22059/poll.2020.294483.728ENK.RajouriyaDepartment of Chemistry, Dr. B.R. Ambedkar University, Agra, 282002, IndiaH.RohraDepartment of Chemistry, Dr. B.R. Ambedkar University, Agra, 282002, IndiaA.TanejaDepartment of Chemistry, Dr. B.R. Ambedkar University, Agra, 282002, IndiaJournal Article20191221The present study deals with sequential extraction of fine particulate matter (PM2.5) bound trace metals in an industrial area of Firozabad, India. During the study period, daily PM2.5 concentration ranged between 73.49 μg/m3 and 113.26 μg/m3 with poor air quality index of 196.37. In the present study, Ca recorded the highest while Co had the lowest concentration among all analysed metals. Mn, Ni, Pb, Co, and Cu had high bioavailability (34.80%-65.80%) than other elements. Cd, Pb, and Cu were found to be highly enriched (EF> 289-6516) by varied anthropogenic activities. Hazard Quotient (HQ) for Ni, Mn, and Cr and Excess Lifetime Cancer Risk (ELCR) of Cr(VI) and Ni exceeded the respective safer limit (HQ>1 and ELCR≥ 10-6), thus implying serious risk to the receptors. All the metals had the highest concentration in less mobile and residual fraction except for Ni and Co, which inferred greater risk due to their high toxicity. Overall, the results present exposure and risk assessment of metal associated particles; that provides in-depth knowledge of the risk factors through inhalation exposure pathway of particles associated with industrial environment.https://jpoll.ut.ac.ir/article_76545_9d11019268550722bb5992d2d55bc717.pdfUniversity Of Tehran PressPollution2383-451X6320200701Qualitative Analysis of Plastic Debris on Beaches of Brunei Darussalam5695807654610.22059/poll.2020.297713.751ENZ.QaisraniCivil Engineering Program Area, Faculty of Engineering, Universiti Teknologi Brunei (UTB), Jalan Tungku link, Gadong, BE1410, Brunei Darussalam
Department of Chemical Engineering, Balochistan University of Information Technology, Engineering and Management Sciences (BUITEMS), Quetta, 87300, Balochistan, Pakistan2Department of Chemical Engineering, Faculty of Engineering & Architecture, BalochistanS.ShamsCivil Engineering Program Area, Faculty of Engineering, Universiti Teknologi Brunei (UTB), Jalan Tungku link, Gadong, BE1410, Brunei Darussalam0000-0001-6233-5365Z. R.GuoCivil Engineering Program Area, Faculty of Engineering, Universiti Teknologi Brunei (UTB), Jalan Tungku link, Gadong, BE1410, Brunei DarussalamDarussalam
Department of Hydraulic Engineering, School of Civil Engineering and Transportation, South China University of Technology, 381 Wushan Road, Tianhe District, Guangzhou, 510641, ChinaA. A.MamunDepartment of Civil Engineering, International Islamic University Malaysia (IIUM), Jalan Gombak, 53100, Kuala Lumpur, Malaysia0000-0002-7324-5514Journal Article20200212Plastic debris is one of the major environmental concerns for the coastal area of Brunei Darussalam. It reduces the aesthetic appeals of the beaches in the country. The current study investigates marine debris on six different beaches of Brunei Darussalam along the South China Sea. Plastic was found the most abundant among whole debris by number (90.02%) and by weight (39.12%). It was classified by size (micro (<5 mm), meso (5-20 mm), macro (21-100), and mega (>100 mm)), colour (transparent, coloured, white and black). Fourier Transform Infrared Spectroscopy (FT-IR) was used to investigate the types of plastics and additives present in it. Statistical analysis using Minitab 17 and Kruskal-Wallis test was performed for comparison of data at different study sites. All major types of plastics were found in different forms with varying quantities from which toxic chemicals may leach out during degradation. The highest abundance by the number of plastic debris was found on Muara beach with a mean value 74.428 n/m2 ± 34.33 n/m2, while the lowest abundance was found on Lumut beach 53 n/m2 ± 20.9 n/m2. The study shows beaches used for recreational facilities are likely to have more debris as compared to other beaches.https://jpoll.ut.ac.ir/article_76546_db16e6aa171501bccfa39eb059e278c2.pdfUniversity Of Tehran PressPollution2383-451X6320200701Response surface method Optimization of the Dyes Degradation using Zero-Valent Iron based Bimetallic Nanoparticle on the Bentonite Clay Surface5815957655410.22059/poll.2020.298554.755ENM. R.SabouriDepartment of Chemistry, Islamic Azad University, North Tehran Branch, P.O. Box 1913674711, Tehran, IranM. R.SohrabiDepartment of Chemistry, Islamic Azad University, North Tehran Branch, P.O. Box 1913674711, Tehran, IranA.Zeraatkar MoghaddamDepartment of Chemistry College of Sciences, University of Birjand, P.O. Box 97175-615, Birjand, Iran0000-0001-8928-3171Journal Article20200227Immobilizing of zero-valent iron in mono- and bi-metallic systems on the bentonite clay surface as new nanocatalyst were synthesized and used to degrade model acidic dyes from aqueous media. The Fourier-transform infrared spectroscopy, scanning electron microscopy-energy dispersive X-ray spectroscopy, transmission electron microscopy, X-ray diffraction, and Brunauer-Emmett-Teller analysis were used to characterize the synthesized nanocomposites, which demonstrated successful loading of nanoscale Fe-Cu bi-metallic onto bentonite support. Different variables controlling the congo red, methyl orange and methyl red dyes degradation using zero-valent iron based bimetallic nanoparticle on the bentonite clay surface as new nanocatalyst were concurrently optimized through an experimental design. Basic evaluations proved the nanocatalyst quantity, medium pH, initial dye concentration, and contact time as the most important variables influencing the degradation phenomenon and hence a response surface methodology based on the central composite design was conducted to determine the relations between the variables and the degradation efficiencies. The statistical factors (e.g. R2 and F-value) of the derived models were considered. Using response surface plots obtained through the models, the effects of the variables on the degradation efficiencies for each dye were assessed. Also, the Nelder-Mead non-linear optimizations were performed and the optimal degradation efficiencies at a 95% confidence level were determined which were found to comply with the respective experimental response values.https://jpoll.ut.ac.ir/article_76554_6b6ba0635607f304d98520c51101c1da.pdfUniversity Of Tehran PressPollution2383-451X6320200701Assessment of Accumulation and Potential Health Risk of Cr, Mn, Fe, Cu, and Zn in Fish from North-Eastern Mediterranean Sea5976107655610.22059/poll.2020.297700.752ENM. F.CanDepartment of Water Resources Management and Organization, Faculty of Marine Sciences and Technology, İskenderun Technical University, 31200 İskenderun / Hatay, TURKEY0000-0002-3866-2419A. B.YılmazDepartment of Marine Sciences, Faculty of Marine Sciences and Technology, İskenderun Technical University, 31200 İskenderun / Hatay, TURKEYA.YanarDepartment of Marine Sciences, Faculty of Marine Sciences and Technology, İskenderun Technical University, 31200 İskenderun / Hatay, TURKEYE.KılıçDepartment of Water Resources Management and Organization, Faculty of Marine Sciences and Technology, İskenderun Technical University, 31200 İskenderun / Hatay, TURKEY0000-0003-1953-5008Journal Article20200212Heavy metal accumulation in aquatic organisms has been an important issue due to environmental pollution resulting from anthropogenic activities. In this study, Cr, Mn, Fe, Cu, and Zn in the selected fish species (Mullus barbatus, Solea solea, and Siganus rivulatus) from three consecutive bays (İskenderun, Mersin, and Antalya from North-Eastern Mediterranean Sea) were considered to provide some information on heavy metal accumulation level and assessment of their health risk on both general and fishermen populations. There were some significant differences inter- and intra- species/ tissues/bays. The stability in heavy metal accumulation in fish tissues varied and the most stable tissue for Cr, Cu, Fe, Mn and Zn were determined as skin, muscle, liver, liver and, muscle, respectively. In general, the lowest heavy metal values were observed in the fish muscle. The Target Hazard Quotients (THQ) and Total Target Hazard Quotients (TTHQ) values based on muscle were not exceeded 1.00. Therefore, these results suggest that both general and fishermen populations are not subjected to the significant potential health risk from those bays.https://jpoll.ut.ac.ir/article_76556_9320bf2c7dd3f295462036091cbc1f76.pdfUniversity Of Tehran PressPollution2383-451X6320200701Heavy Metal Pollution from Dental Clinics–Part 1:Annual Emissions Assessment6116267655810.22059/poll.2020.298433.758ENA.BenaïssaPetrochemical and process engineering department, Laboratoire de Génie Chimique et Environnement de Skikda ,Postcode21000,Université20 Août 1955Skikda, AlegriaM. S.MadjramPetrochemical and process engineering department, Laboratoire de Génie Chimique et Environnement de Skikda ,Postcode21000,Université20 Août 1955Skikda, AlegriaB.TaoukLaboratoire de Sécurité des Procédés Chimiques,Postcode76801, Normandie Univ, INSA Rouen Normandie, Rouen, FranceL.AbdelouahedLaboratoire de Sécurité des Procédés Chimiques,Postcode76801, Normandie Univ, INSA Rouen Normandie, Rouen, FranceJournal Article20200229This study aimed to evaluate the concentration of heavy metals in liquid effluents and to quantify the mercury content in dental amalgam waste generated by dental clinics. Three neighbouring cities in Northeast Algeria were considered in this study (Constantine, Skikda, and Annaba). Heavy metals, such as Hg, Cu, Zn, Fe, Ni, Mn, Cr, Cd, and Pb, were analysed in wastewater and then compared with acceptable standard values. Special attention was given to mercurybecause of its dangerous effects. The results collected indicated the presence of heavy metal contamination in dental wastewater. Heavy metal concentrations were significantly high for all heavy metals and exceeded the allowed concentrations. However, Pb and Cr were shown to have acceptable concentrations. This study highlights the possible contamination of the environment by mercury and heavy metals generated by dental clinics. This study also demonstrates an order of magnitude of the concentration of these heavy metal in a large agglomeration with a population of 2.5 million people.https://jpoll.ut.ac.ir/article_76558_5fdf887dbddc237ba8c489a45c8ad53f.pdfUniversity Of Tehran PressPollution2383-451X6320200701Dissipation of butachlor by a new strain of Pseudomonas sp. isolated from paddy soils6276357655910.22059/poll.2020.299245.762ENA. A.PourbabaeiDepartment of Soil Science, Faculty of Agricultural Engineering and Technology, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran0000-0002-5273-2161E.Khoshhal NakhjiriDepartment of Soil Science, Faculty of Agricultural Engineering and Technology, College of Agriculture and Natural Resources, University of Tehran, Karaj, IranE.TorabiDepartment of Plant Protection, Faculty of Agricultural Science and Engineering, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran0000-0003-1949-2554M.FarahbakhshDepartment of Soil Science, Faculty of Agricultural Engineering and Technology, College of Agriculture and Natural Resources, University of Tehran, Karaj, IranJournal Article20200310Butachlor (BUT) is a chloroacetanilide herbicide widely applied to rice paddies to control annual grass and broad-leaf weeds. A BUT-degrading bacterial strain (PK) was isolated from paddy soils. Biochemical and 16S rRNA sequencing characteristics confirmed the strain as Pseudomonas aeruginosa (99% resemblance). The isolate dissipated BUT (100 μg/mL) in an M9 liquid medium with a rate of 0.5 ± 0.03 day-1 and DT50 and DT90 of 1.38 ± 0.10 days and 4.58 ± 0.32 days, respectively. Soil dissipation of BUT was investigated under flooded conditions. In sterile soils, the isolate increased the dissipation of BUT (200 μg/g) (DT50 = 12.38 ± 1.83 days, DT90 = 41.12 ± 6.09 days, k = 0.06 ± 0.01 day-1) compared to sterile non-inoculated samples (DT50 = 26.87 ± 2.82 days, DT90 = 89.25 ± 9.36 days, k = 0.03 ± 0.00 day-1). In non-inoculated non-sterile soil experiments, the dissipation of BUT was faster (DT50 = 15.17 ± 2.11 days, DT90 = 50.38 ± 7.02 days, k = 0.05 ± 0.00 day-1) compared to non-inoculated sterile ones, and inoculating the isolate accelerated the removal of BUT in non-sterile soils significantly (DT50 = 8.03 ± 1.20 days, DT90 = 26.68 ± 3.97 days, k = 0.09 ± 0.01 day-1). BUT inhibited soil respiration (SR) initially for 5 days, followed by an increase until day 20. The increase in SR was more pronounced in the co-presence of BUT and the isolate. The results of this research suggest P. aeruginosa PK as a suitable candidate for BUT bioremediation.https://jpoll.ut.ac.ir/article_76559_ee52598644ee7ced4c2db2072d7d25d9.pdfUniversity Of Tehran PressPollution2383-451X6320200701A Regression-Based Analysis to Assess the Impact of Fluoride Reach River Water on the Groundwater Aquifer Adjacent to the River: A Case Study in Bharalu River Basin of Guwahati, India6376507656210.22059/poll.2020.299434.764ENM.DasDepartment of Civil Engineering, Indian Institute of Technology Guwahati, Guwahati 781 039, Assam, IndiaR. K.BhattacharjyaDepartment of Civil Engineering, Indian Institute of Technology Guwahati, Guwahati 781 039, Assam, India0000-0003-4681-3480Journal Article20200316Fluoride is one of the parameters which is non-degradable and naturally occurring inorganic anion found in many natural streams, lakes, and groundwater. Serious problems are faced in several parts of India due to the high consumption of fluoride through drinking water. These may cause dental and skeletal fluorosis to humans. This study aims to examine the level of fluoride in both Bharalu river water and groundwater within Guwahati city, Assam, India, and also to analyze the impact of fluoride reach river water on the groundwater aquifer adjacent to the river. From the investigation, it has been observed that the concentration of fluoride varies from 0.02 to 3.73 mg/l in river water and 0.04 to 4.7 mg/l in the case of groundwater. The statistical analysis shows that there is a strong correlation between the fluoride concentration of river water and groundwater. This indicates that the groundwater might have contaminated by the polluted river water.https://jpoll.ut.ac.ir/article_76562_57ad6bee934d6b887efb209d7377ad90.pdfUniversity Of Tehran PressPollution2383-451X6320200701Road Traffic and PM10, PM2.5 Emission at an Urban Area in Algeria: Identification and Statistical Analysis6516607656710.22059/poll.2020.294710.730ENN.BelarbiSpectrochemistry and Structural Pharmacology Laboratory, Department of Chemistry Science Faculty, University of Tlemcen, Algeria
Scientific and Technical Research Center in Physico-Chemical Analysis CRAPC, PB 384, Industrial zone of Bou-Ismail, RP 42004, Tipaza, AlgeriaM.BelamriNuclear Research Centre of Algiers (CRNA), 2, boulevard Frantz Fanon, AlgeriaB.DahmaniSpectrochemistry and Structural Pharmacology Laboratory, Department of Chemistry Science Faculty, University of Tlemcen, AlgeriaM. A.BenamarLaboratory of Applied Fundamental Physics (FUNDAPL), Blida University1, Faculty of Sciences PV 08, Soumaa Road, PB 270 -Blida-Algeria
University Centre of Tamanrasset, AlgeriaJournal Article20191225Air quality in greater Algiers, in Algeria was assessed analyzing aerosol particulate matter (PM10 and PM2.5) at a site influenced by heavy road traffic. Particulate matters were collected using a Gent sampler to characterize the atmospheric aerosol of Algiers. An Energy dispersive X ray spectrometer (EDXRF) was used to determine the heavy metal concentrations in the PM2.5 and PM10 size fractions. Principal Component analysis and Enrichment factor were used to identify the major sources of air pollutants for PM10 fraction in the studied area. Backward trajectories were calculated in order to identify potential distant sources that contribute to particulate pollution in our site. Significant concentrations of PM 2.5 and PM10 as well as associated heavy metals have been documented. The mean concentrations of heavy metals contained in PM10 and PM2.5 were, in descending order, Fe>Zn>Ni>Pb>Mn>Co>Cr; Pb>Mn>Co>Fe>Zn>Ni>Cr respectively. The contribution of road traffic to the levels of fine (PM2.5), and coarse (PM10) particles were studied.https://jpoll.ut.ac.ir/article_76567_d224fb9a598cd663325dbde7b182046e.pdfUniversity Of Tehran PressPollution2383-451X6320200701Effect of Composting Process on Some Chemical-Biological Properties and Heavy Metals Behavior of Municipal Sewage Sludge as Affected by Various Bulking Agents6616797661910.22059/poll.2020.295781.736ENM.SaffariDepartment of Environment, Institute of Science and High Technology and Environmental Sciences, Graduate University of Advanced Technology, Kerman, IranV. R.SaffariDepartment of Horticultural, Factually of agriculture, Shahid Bahonar University of Kerman, Kerman, IranH.KhabazzadehDepartment of Chemistry, Shahid Bahonar University of Kerman, Kerman, IranH.NaghaviSoil and Water Research Department, Kerman Agricultural and Natural Resources Research and Education Center, AREEO, Kerman, IranJournal Article20200112The present study tries to investigate the effect of composting process on some properties and heavy metals status of two municipal sewage sludge (MSS) as affected by three different organic bulking agents (BAs) at three levels (10%, 25%, and 45% V/V). According to the results, the composting process could reduce the fecal coliform to class A, a reduction more obvious in treatments with BAs than produced composts without them. Changes in the chemical properties of the composts vary according to the type of MSS and Bas. Based on the compost quality standard, most of the produced samples are classified in compost-class II. Examination of the total form of three heavy metals (HMs: Zn, Ni, Fe) of both MSS shows that composting process without BAs increases the HMs total concentration, but using of BAs have not been clear trends. In the contrary, BAs application reduced the available form of Fe and Ni, but increased the Zn available form. Examination of chemical forms of each studied HMs also shows that the composting process reduces the Ni and Fe mobility factor, but increases that of Zn. Generally, while, prepared composts can classify into the compost-class II, based on their properties, the high concentration of total Zn above the standard limit makes it extremely restrictive to be used as class II compost. However, according to EPA regulations, the composts with this concentration of Zn can be used as a relatively safe organic material on agricultural land.https://jpoll.ut.ac.ir/article_76619_ab1f3ca10acd4b12e5706b77e36cdd5d.pdfUniversity Of Tehran PressPollution2383-451X6320200701Bio-Accumulation of Lead and Cadmium by Radish (Raphanus sativus) and Cress (Lepidium sativum) under Hydroponic Growing Medium6816937662010.22059/poll.2020.297147.742ENF.HedayatzadehDepartment of Environment, Faculty of Natural Resources and Environment, Malayer University, P.O. Box 65719-95863, Malayer, IranM.BanaeeDepartment of Aquaculture, Faculty of Natural Resource and Environmental, Behbahan Khatam alanbia University of Technology, P.O. Box 63616-47189, Behbahan, Iran0000-0001-6492-2096K.ShayestehDepartment of Environment, Faculty of Natural Resources and Environment, Malayer University, P.O. Box 65719-95863, Malayer, IranJournal Article20200202In order to investigate the accumulation and bio-absorption of lead and cadmium in radish and cress, the present study has been conducted in a completely randomized design in three replicates in a hydroponic growing medium. The first factor includes the plant type at two levels (radish and cress), and the second factor is consisted of lead (Pb) (first experiment) at two levels (50 and 100 mg/L), cadmium (Cd) (second experiment) at one level (10 mg/L), and a combination of lead and cadmium (third experiment) again at two levels. After 23 days, roots and aerial parts of both plants have been dried for 48 hours at 70°C in an oven. Then, half gram (0.5 g) of the dried templates has been used to measure the accumulation of Pb and Cd by means of an atomic absorption spectrometer. The highest amount of Pb in radish and crest roots belong to 100 mg/L concentration and the combined Cd (10) + Pb (100) mg/L treatment, respectively, and the highest amount of Cd occurs in Cd (10) + Pb (50) for radish roots and in Cd (10) + Pb (100) combination for cress. Moreover, the Translocation Factor (TF), with a value below 1 and higher bio-concentration factor (BCF) in roots, compared to the aerial part of both radish and cress, seem to be due to the low capability of these plants to transfer Pb and Cd from roots to aerial part. There is a high potentiality for lead accumulation in the roots that prevent its transfer to the aerial part.https://jpoll.ut.ac.ir/article_76620_1fcb5c4c068ab273a14f94d2bf31a665.pdf