Avicenna Journal of Environmental Health Engineering最新文献_第10页

A Comparison of Performance of Artificial Neural Networks for Prediction of Heavy Metals Concentration in Groundwater Resources of Toyserkan Plain 人工神经网络在Toyserkan平原地下水资源重金属浓度预测中的性能比较

Avicenna Journal of Environmental Health Engineering Pub Date : 2017-06-05 DOI: 10.5812/AJEHE.11792

M. Alizamir, S. Sobhanardakani

引用次数: 16

Evaluation of the Efficiency of Wastewater Treatment Plants in the Removal of Common Antibiotics from Municipal Wastewater in Hamadan, Iran 伊朗哈马丹市污水处理厂去除城市污水中常见抗生素的效率评价

Avicenna Journal of Environmental Health Engineering Pub Date : 2017-05-20 DOI: 10.5812/AJEHE.10921

R. Shokoohi, A. Dargahi, Razieh Khamutian, Y. Vaziri

{"title":"Evaluation of the Efficiency of Wastewater Treatment Plants in the Removal of Common Antibiotics from Municipal Wastewater in Hamadan, Iran","authors":"R. Shokoohi, A. Dargahi, Razieh Khamutian, Y. Vaziri","doi":"10.5812/AJEHE.10921","DOIUrl":"https://doi.org/10.5812/AJEHE.10921","url":null,"abstract":"The presence of antibiotics in the environment, especially aquatic environments, is a major health and environmental concern.Wastewater treatment plants play an important role in the treatment of municipal and industrial wastewater and removal of contaminants.The aim of this study was to determine the concentration of prevalent antibiotics in municipal wastewater of Hamadan,Iran and to evaluate the removal efficiency of wastewater treatment plants. During 3 months (April, May, and June 2016), a total of 12 composite influent and effluent samples were collected from the wastewater treatment plants. Solid-phase extraction (SPE) was used for preparing the samples, which were then analyzed using high-performance liquid chromatography (HPLC) with UV detection.Based on the analysis of 6 antibiotics, three antibiotics, including amoxicillin, imipenem, and cefixime, were detected, and their concentrations were measured at 1.6, 10.7, and 5.8 ug/L, respectively. The removal efficiency of these antibiotics in wastewater treatment plants was 55.66%, 34.01%, and 24.33%, respectively. Due to the presence of examined antibiotics in the effluent and influent wastewater treatment plants, they might cause direct and indirect effects on human health and environment if proper measures are not taken by the authorities. Since the removal of these antibiotics from wastewater treatment plants is relatively poor, it is suggested to use advanced wastewater treatment plants to reduce antibiotics in effluent wastewater and decrease the adverse effects of these micropollutants.","PeriodicalId":8672,"journal":{"name":"Avicenna Journal of Environmental Health Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44924773","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 9

A Review of Groundwater Pollution Potential Threats from Municipal Solid Waste Landfill Sites: Assessing the Impact on Human Health 城市固体废物填埋场地下水污染潜在威胁评估对人类健康的影响

Avicenna Journal of Environmental Health Engineering Pub Date : 2017-05-16 DOI: 10.5812/AJEHE.11525

P. Kumari, N. Gupta, A. Kaur

{"title":"A Review of Groundwater Pollution Potential Threats from Municipal Solid Waste Landfill Sites: Assessing the Impact on Human Health","authors":"P. Kumari, N. Gupta, A. Kaur","doi":"10.5812/AJEHE.11525","DOIUrl":"https://doi.org/10.5812/AJEHE.11525","url":null,"abstract":"An attempt has been made in this paper to review various studies associated with groundwater contamination near landfill sites, basically caused by non-engineered landfills or open dumps in India and overseas, and its impact on human health. Landfill leachate contains different kinds of municipal toxic wastes as well as heavy metal, which finally percolates into the ground and joins the groundwater table. Consuming such water results in severe health hazards and may sometimes be fatal if consumed for long periods. Several studies have shown evidence on the high concentration of heavy metals in leachate as well as in nearby groundwater sources. Moreover, various studies have confirmed the fact that there is an increased threat of adverse health effects (low birth weight, birth defects, and certain types of cancers), congenital malformations in children, and higher risks for malformations of the nervous and musculoskeletal systems for skin, hair, and nails in local residents. Pregnant women and children are more vulnerable to these pollutants, and newborn children are more prone to the health risk. These findings may signify the real health risks associated with residents residing near landfill sites.","PeriodicalId":8672,"journal":{"name":"Avicenna Journal of Environmental Health Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47459912","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 10

Heavy Metal Levels and Potential Health Risk Assessment in Honey Consumed in the West of Iran 伊朗西部地区蜂蜜中重金属含量及潜在健康风险评估

Avicenna Journal of Environmental Health Engineering Pub Date : 2016-12-28 DOI: 10.5812/AJEHE.7795

S. Sobhanardakani, Mona Kianpour

引用次数: 21

The Efficiency of Electrocoagulation and Electroflotation Processes for Removal of Polyvinyl Acetate From Synthetic Effluent 电絮凝和电浮选法去除合成废水中聚氯乙烯的效果研究

Avicenna Journal of Environmental Health Engineering Pub Date : 2016-12-27 DOI: 10.5812/AJEHE.7469

Zeinab Atashzaban, A. Seidmohammadi, D. Nematollahi, G. Azarian, Omid Heydari Shayesteh, A. Rahmani

{"title":"The Efficiency of Electrocoagulation and Electroflotation Processes for Removal of Polyvinyl Acetate From Synthetic Effluent","authors":"Zeinab Atashzaban, A. Seidmohammadi, D. Nematollahi, G. Azarian, Omid Heydari Shayesteh, A. Rahmani","doi":"10.5812/AJEHE.7469","DOIUrl":"https://doi.org/10.5812/AJEHE.7469","url":null,"abstract":"Polyvinyl acetate (PVAc) is a type of thermoplastic resin generated by a polymerization of vinyl acetate. Effluent of this polymer is highly rich with chemical oxygen demand (COD) and total solids (TS). Due to lack of studies on the above problem, the current study aimed at obtaining a sufficient method for the effluent pre-treatment. In fact, the study discussed PVAC effluent treatment by electrocoagulation (EC) and electroflotation processes.The study considered the effect of various operating parameters such as pH and current density, initial concentration of pollutant, inter-electrode distance, electrolysis times, and types of electrode materials (iron and aluminum); COD and TS removal efficiency and optimal values of operational parameters were calculated. In the study, COD and TS reduction rates in the optimized conditions in batch flow reactor were 83% and 78%, and 80% and 72% for Fe and Al electrodes, respectively. Optimized conditions were taken as 24 mA cm -2, 20 g/L PVAC, and neutral pH in 20 minutes for Al-Al electrodes and 15 minutes for Fe-Fe electrodes, 1 cm distance between electrodes with parallel-type monopole of connection modes. According to the results, electrochemical process with batch flow tends to be a suitable pre-treatment process that is inexpensive, easily operated, and highly sufficient for effluent treatment, which contains polyvinyl acetate.","PeriodicalId":8672,"journal":{"name":"Avicenna Journal of Environmental Health Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71246594","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 12

Tetrachloroethylene Removal Rate from Aqueous Solutions by Pumice Doped with Copper: An Evaluation of the Effect of pH 掺铜浮石对水溶液中四氯乙烯的去除率:pH影响的评价

Avicenna Journal of Environmental Health Engineering Pub Date : 2016-12-27 DOI: 10.5812/AJEHE.5658

A. Almasi, M. Soltanian, F. Asadi, Parvin Nokhasi, K. Godini, M. Mohammadi, G. Azarian, A. Mohammadi

引用次数: 1

Increasing Methane Production by Anaerobic Co-Digestion of Slaughterhouse with Fruit and Vegetable Wastes 屠宰场与果蔬废弃物厌氧共消化提高甲烷产量

Avicenna Journal of Environmental Health Engineering Pub Date : 2016-12-27 DOI: 10.5812/AJEHE.8541

M. Samadi, M. Leili, H. Alizadeh, K. Godini, D. Ahmadi

引用次数: 4

Synthesis of Manganese Tetroxide Nanoparticles Using Precipitation and Study of Its Structure and Optical Characteristics 沉淀法合成四氧化二锰纳米颗粒及其结构和光学特性研究

Avicenna Journal of Environmental Health Engineering Pub Date : 2016-12-27 DOI: 10.5812/AJEHE.8565

R. Shokoohi, M. Samadi, G. Asgari, M. V. Tabar, K. Godini

{"title":"Synthesis of Manganese Tetroxide Nanoparticles Using Precipitation and Study of Its Structure and Optical Characteristics","authors":"R. Shokoohi, M. Samadi, G. Asgari, M. V. Tabar, K. Godini","doi":"10.5812/AJEHE.8565","DOIUrl":"https://doi.org/10.5812/AJEHE.8565","url":null,"abstract":"Considering extensive applications of manganese tetroxide nanoparticles in various industries due to its special properties, conducting studies on how to achieve more suitable ways to produce smaller nanoparticles is of great importance. In this study, nanoparticles of manganese tetroxide (Mn3O4) were synthesized by a co-precipitation method. In order to determine the characteristics of the structure, size, and specific surface of the resulting nanoparticles, techniques such as XRD, BET, BJH, FESEM, and FTIR were employed. Also, the nanoparticles were quantified with EDS and their colony size was examined using DLS experiments. The findings revealed a production of crystalline manganese tetroxide nanoparticles with a space group of 141/amd (S.G.) (141) and a molecular weight of 228.81 with the international code of ICSD Card # 89 - 4837. The specific surface area was 32.147 m2 /g with a pore volume of 0.1041 cm3 /g. The XRD and EDX analyses verify the production of the Mn3O4 nanoparticles. The size of the nanostructures is approximately 19 nm. The method used in this study could produce the Mn3O4 nanoparticles in a much easier way without the need for surfactants. Compared to the nanoparticles produced in other studies, the size of the nanoparticles produced in the present study is remarkably smaller. Moreover, less amount of the metal salt was used.","PeriodicalId":8672,"journal":{"name":"Avicenna Journal of Environmental Health Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71246749","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Prevalence and Removal Efficiency of Enterococcal Species and Vancomycin-resistant Enterococci of a Hospital Wastewater Treatment Plant 某医院污水处理厂肠球菌种类及耐万古霉素肠球菌的流行及去除率

Avicenna Journal of Environmental Health Engineering Pub Date : 2016-12-27 DOI: 10.5812/AJEHE.8623

F. Karimi, M. Samarghandi, R. Shokoohi, K. Godini, M. Arabestani

{"title":"Prevalence and Removal Efficiency of Enterococcal Species and Vancomycin-resistant Enterococci of a Hospital Wastewater Treatment Plant","authors":"F. Karimi, M. Samarghandi, R. Shokoohi, K. Godini, M. Arabestani","doi":"10.5812/AJEHE.8623","DOIUrl":"https://doi.org/10.5812/AJEHE.8623","url":null,"abstract":"Simultaneous presence of various antibiotics and bacteria in hospital wastewaters creates a suitable environment, in which the \u0000bacteria, such as enterococci become resistant to the antibiotics. The aim of this study was to evaluate the performance of different \u0000units of the hospital wastewater treatment plant (HWTP) to remove Enterococcus spp and Vancomycin-resistant Enterococcus \u0000(VRE). The study was performed on the 27 samples collected from HWTP in Hamedan, Iran during December 2014 to August 2015. \u0000Enterococcus spp and VRE were identified by biochemical tests and then the isolates were confirmed by PCR. Finally, the antibiotic \u0000susceptibility test was performed using disk diffusion methods. Of the 27 samples examined, 315 a total of enterococcal isolates were \u0000obtained. Of the 315 isolates of enterococci investigated, 162 (51.42%) were identified as E. faecium, 87 (27.61%) as E. hirae, 35 (11.11%) as \u0000E. faecalis, 11 (3.5%) as E. gallinarum, 7 (2.22%) as E. casseliflavus, 4 (1.26%) E. avium, and 9 (2.85%) isolates VR E. faecium.The results of \u0000antibiotic susceptibility testing showed that of the total 315 isolates, 146 (46.34%) were resistance to tetracycline, 9 (2.85%) were resistance \u0000to vancomycin and Teicoplanin. Lower antibiotic resistance was seen with Nitrofurantoin 2 (1.26%). This study indicates a \u0000high prevalence of multidrug resistance among E. faecium isolated from HWTP, thus, it could be considered as a threat to the health \u0000and safety of wastewater workers and even public health.","PeriodicalId":8672,"journal":{"name":"Avicenna Journal of Environmental Health Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71246796","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 9

Performance of A Pilot-Scale Vermifilter for the Treatment of A Real Hospital Wastewater 中试规模vermfilter处理某医院污水的性能研究

Avicenna Journal of Environmental Health Engineering Pub Date : 2016-12-27 DOI: 10.5812/AJEHE-7585

Nahid Ghobadi, R. Shokoohi, A. Rahmani, M. Samadi, K. Godini, M. Samarghandi

{"title":"Performance of A Pilot-Scale Vermifilter for the Treatment of A Real Hospital Wastewater","authors":"Nahid Ghobadi, R. Shokoohi, A. Rahmani, M. Samadi, K. Godini, M. Samarghandi","doi":"10.5812/AJEHE-7585","DOIUrl":"https://doi.org/10.5812/AJEHE-7585","url":null,"abstract":"In this study, the performance of a pilot-scale vermifilter (VF) for the treatment of hospital wastewater using the earthworm species Eisenia fetida was evaluated. The earthworms’ gut acts as a bioreactor and can ingest the wastewater solid and liquid organic wastes and expel these as vermicompost. A pilot-scale vermifilter was installed and operated for 133 days in one of hospitals in Hamadan city; the designed system was fed with the influent passed through coarse and fine grillage and the sedimentation tank of the hospital’s sanitary collection system. In order to study the efficiency of the system, the variations of pH value, chemical oxygen demand (COD), biochemical oxygen demand (BOD5), and total suspended solids (TSS) were measured. In addition, a conventional geofilter (GF) without Earthworm was used as the experimental control. The vermifiltration caused a significant decrease in the levels of COD (75%), BOD5 (93%), and TSS (89%) as well as neutralized pH in the wastewater. Also, these contents in the geofilter were observed to be 65%, 71%, and 71%, respectively. The vermifiltration technology can, therefore, be applied as an environmentally friendly method for hospital wastewater treatment.","PeriodicalId":8672,"journal":{"name":"Avicenna Journal of Environmental Health Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71246854","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7