Environmental Health Engineering and Management Journal最新文献_第4页

Comparison of EPI in the field of climate changes indexes in Iran and other countries in 2020 and the relationship between GDP and EPI 伊朗等国2020年EPI在气候变化指数领域的比较及GDP与EPI的关系

IF 1.6

Environmental Health Engineering and Management Journal Pub Date : 2023-02-01 DOI: 10.34172/ehem.2023.03

Fatemeh Mortezazadeh, Soheila Amiri-Hossein, F. Gholami-Borujeni

{"title":"Comparison of EPI in the field of climate changes indexes in Iran and other countries in 2020 and the relationship between GDP and EPI","authors":"Fatemeh Mortezazadeh, Soheila Amiri-Hossein, F. Gholami-Borujeni","doi":"10.34172/ehem.2023.03","DOIUrl":"https://doi.org/10.34172/ehem.2023.03","url":null,"abstract":"Background: This study aimed to evaluate the Environmental Performance Index (EPI) in the field of climate changes in Iran in 2020, to compare these indexes in the Middle East countries and developed countries, and to evaluate the relationship between these indexes and gross domestic product (GDP) in Iran and some of the Middle East countries, as well as 10 developed countries in the world. Methods: Data related to the EPI in the field of climate changes and GDP were extracted from the database of the Yale University (https://epi.yale.edu) and the World Bank. The relationship between them was investigated using linear regression analysis. Results: The results showed that in 2020, Iran was ranked fourteenth and sixth among the studied countries, in terms of carbon dioxide growth rate and black carbon growth rate, respectively. It has also been ranked first in terms of carbon dioxide from land cover. Also, Iran was ranked eleventh among the Middle East countries and developed countries in terms of methane (CH4 ) growth rate and was ranked sixth among the Middle East countries in terms of greenhouse gas (GHG) per capita and 13th among all studied countries. However, a significant relationship was observed between changes in GDP with GHG emissions of EPI (R2=0.82). Conclusion: Based on the Iran’s ranking in the field of climate change performance index, planning to reduce CHGs generation is necessary. Also, education of citizens in the field of methods to reduce greenhouse effects should be done by environmental policy makers.","PeriodicalId":51877,"journal":{"name":"Environmental Health Engineering and Management Journal","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2023-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44826425","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: 1

Occurrence and removal of microplastics in a municipal wastewater treatment plant with conventional activated sludge process: A case study in Isfahan, Iran 采用常规活性污泥法的城市污水处理厂微塑料的发生和去除:伊朗伊斯法罕的案例研究

IF 1.6

Environmental Health Engineering and Management Journal Pub Date : 2023-02-01 DOI: 10.34172/ehem.2023.07

H. Sharifi, H. Movahedian Attar, B. Bina

{"title":"Occurrence and removal of microplastics in a municipal wastewater treatment plant with conventional activated sludge process: A case study in Isfahan, Iran","authors":"H. Sharifi, H. Movahedian Attar, B. Bina","doi":"10.34172/ehem.2023.07","DOIUrl":"https://doi.org/10.34172/ehem.2023.07","url":null,"abstract":"Background: Microplastics (MPs) are nowadays found in the air and in various terrestrial and aquatic environments and have become emerging pollutants. These particles can absorb other chemicals and microbial contaminants and release them into the environment and food chain. Despite the high efficiency of wastewater treatment plants (WWTPs) in removing MPs, WWTPs are still one of the major sources of MPs discharge to the environment. This study was conducted to evaluate the efficiency of MPs removal in a municipal WWTP with conventional activated sludge in Iran. Methods: MPs particles were counted using a stereomicroscope after the initial preparation steps (sieving, chemical digestion with the catalytic wet peroxidation-oxidation and density separation with NaCl) and then analyzed for particle composition using a Raman micro-spectrometer. Results: MPs concentration in the influent, grit chamber, primary sedimentation tank, and effluent were 843.2±147.5, 315.5±54.7, 80.2±19.1, and 11.13±3.14 items/L, respectively. The overall MPs removal efficiency of the WWTP was 98.7%, with the grit chamber, primary sedimentation tank, and secondary sedimentation tank removed 62.6%, 27.9%, and 8.2% of the total MPs, respectively. The most abundant polymers were polypropylene (PP) and polyethylene (PE). Conclusion: Despite the effective removal of MPs in WWTP, on average 4.47×1011±1.03×1011 MPs are discharged into the receiving waters through the effluent of this WWTP annually. This means that WWTPs can be one of the major sources of MPs in the environment and efforts should be made to increase the efficiency of WWTPs and equip them with advanced technologies.","PeriodicalId":51877,"journal":{"name":"Environmental Health Engineering and Management Journal","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2023-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44375891","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: 1

Optimization and evaluation of the process variable’s effect on color and turbidity removal from coffee processing wastewater: Using a photoelectrochemical oxidation process 工艺变量对咖啡加工废水除色除浊效果的优化与评价——光电化学氧化法

IF 1.6

Environmental Health Engineering and Management Journal Pub Date : 2023-01-28 DOI: 10.34172/ehem.2023.01

Firomsa Bidira, Z. Asmelash, S. Kebede, Abrham Bekele

{"title":"Optimization and evaluation of the process variable’s effect on color and turbidity removal from coffee processing wastewater: Using a photoelectrochemical oxidation process","authors":"Firomsa Bidira, Z. Asmelash, S. Kebede, Abrham Bekele","doi":"10.34172/ehem.2023.01","DOIUrl":"https://doi.org/10.34172/ehem.2023.01","url":null,"abstract":"Background: Coffee is the foundation of Ethiopia’s economy, but the wastewater generated by coffee processing cannot be properly treated, therefore, causing various environmental problems. Methods: In this research, electrochemical oxidation(ECO) and photo electrochemical oxidation(PECO) are combined with UV and hydrogen peroxide (UV/H2 O2 ) to reduce organic compounds in coffee processing effluent with color and turbidity effect. The effects of various experimental parameters such as hydrogen solubility (pH), sodium chloride and calcium chloride (NaCl and CaCl2 ) concentrations, current and electrolysis time, and H2 O2 dose were investigated. Results: The results were investigated and analyzed using response surface methodology (RSM) and Microsoft Excel. The color (99.6%) and turbidity (99.4%) were removed by combining ECO with UV/ H2 O2 , which produces high amounts of hydroxyl ions (OH- ), oxidizes large amounts of contaminants, and increases efficiency. These results were obtained at pH 7, current of 0.40 AMP, and 1.5 g CaCl2 after 40 minutes of electrolysis. The operating factors were pH, electrolyte dosage, time, current and H2 O2 , which plays a major role in increasing the removal capacity of photoelectrochemical oxidation for coffee processing waste water treatment. CaCl2 was once more wonderful in the removal of organic compounds from coffee processing effluents. Conclusion: Therefore, the introduction of this ultraviolet light is a powerful oxidant with H2 O2 , which can improve pollution control. An analysis of variance (ANOVA) with a 95% confidence interval can be used to determine the magnitude of the independent variable.","PeriodicalId":51877,"journal":{"name":"Environmental Health Engineering and Management Journal","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2023-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45323056","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: 0

COVID-19 and health culture 新冠肺炎与健康文化

IF 1.6

Environmental Health Engineering and Management Journal Pub Date : 2023-01-24 DOI: 10.34172/ehem.2023.13

Reza Sadeghi, N. Khanjani

引用次数: 0

Effect of mineral nanoparticles obtained from thermal spring water on COVID-19 从温泉水中获得的矿物纳米颗粒对新冠肺炎的影响

IF 1.6

Environmental Health Engineering and Management Journal Pub Date : 2023-01-24 DOI: 10.34172/ehem.2023.04

M. Firouzi, M. Ehteshamzadeh, Fakhredin Saba, G. Khayati

引用次数: 0

Investigation of toxicity of TiO2 nanoparticles on glioblastoma and neuroblastoma as the most widely used nanoparticles in photocatalytic processes TiO2纳米粒子对光催化过程中应用最广泛的胶质母细胞瘤和神经母细胞瘤的毒性研究

IF 1.6

Environmental Health Engineering and Management Journal Pub Date : 2022-12-18 DOI: 10.34172/ehem.2022.39

F. Kazemi, Marzie Esmaeeli, Peyman Mohammadzadehjahani, Mahnaz Amiri, Parisa Vosough, Meysam Ahmadi-Zeidabadi

{"title":"Investigation of toxicity of TiO2 nanoparticles on glioblastoma and neuroblastoma as the most widely used nanoparticles in photocatalytic processes","authors":"F. Kazemi, Marzie Esmaeeli, Peyman Mohammadzadehjahani, Mahnaz Amiri, Parisa Vosough, Meysam Ahmadi-Zeidabadi","doi":"10.34172/ehem.2022.39","DOIUrl":"https://doi.org/10.34172/ehem.2022.39","url":null,"abstract":"Background: Titanium dioxide (TiO2 ) nanoparticles (NPs) are among the most important and usable photocatalysts. Recently, the biological properties of these NPs, particularly, its anticancer activity, have been considered. Glioblastoma and neuroblastoma are two fatal brain tumors with a high mortality rate in humans, the hope for treatment of which is weak by the common methods. Methods: In this study, the cytotoxicity effects of TiO2 alone and in combination with ultraviolet A (UVA) irradiation on two different cell lines, neuroblastoma (SH-SY5Y) and glioblastoma U87, were investigated. After administration of 10, 50, 100, and 500 μg/mL TiO2 , 0.043 and 1.4 mW/cm2 UVA irradiation, cell viability was investigated after 4, 24, and 48 hours by 3-(4,5-dimethylthiazol-2-yl)-2,5- diphenyltetrazolium bromide (MTT) assay. Results: MTT assay and light microscope demonstrated that the effect of TiO2 NPs varied based on the dose of the substance, the impact time, the cell type, and the amount of radiation. In this study, for NPs alone, both toxicity and non-toxicity of the substance were observed. For NPs in the presence of UV, based on the comparison with its status alone and the difference in the viability assay of the two groups, both the photocatalytic and the coating effect of the NPs were observed. Conclusion: According to the results, different concentrations of TiO2 can be used for different purposes. Low concentrations of TiO2 can be used to increase the efficiency of photodynamic therapy and high concentrations of TiO2 can be used to protect the normal cell. This strategy improves the photodynamic therapy and reduces the harmful effects.","PeriodicalId":51877,"journal":{"name":"Environmental Health Engineering and Management Journal","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2022-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45697873","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: 1

Defluoridation potential of indigenous thirst-quenching herbal products commonly used in Kerala, India 印度喀拉拉邦常用的本土止渴草药产品的脱氟潜力

IF 1.6

Environmental Health Engineering and Management Journal Pub Date : 2022-12-11 DOI: 10.34172/ehem.2022.45

S. Ramanarayanan, Suneesh Kuruvilla, Sabith Methar, Pooja Latti

{"title":"Defluoridation potential of indigenous thirst-quenching herbal products commonly used in Kerala, India","authors":"S. Ramanarayanan, Suneesh Kuruvilla, Sabith Methar, Pooja Latti","doi":"10.34172/ehem.2022.45","DOIUrl":"https://doi.org/10.34172/ehem.2022.45","url":null,"abstract":"Background: Drinking fluoride-contaminated water is a severe health hazard problem. Fluorosis -both skeletal and dental- is an important clinical and public health problem in about 24 countries including India. The best method to overcome the problem of excess fluoride in drinking water is defluoridation. Adsorption methods are simple, economical, and globally pursued techniques. Thirst-quenching herbal products locally called ‘Dahashamini’ are plant parts that are used during boiling drinking water. Possessing a defluoridation potential is an added benefit. Methods: Two grams of each of dried and ground Zingiber officinale, Elettaria cardamomum, Eugenia caryophyllus, Coriandrum sativum, Acacia catechu, Caesalpinia sapans, Vetiveria zizanioides, Cuminum cyminum, and Hemidesmus indicus, were added to 100 millilitres of fluoridated water of baseline concentrations of 5 and 10 ppm, boiled till its boiling point, and cooled. The samples were then filtered and analyzed for fluoride content using fluoride ion specific electrode method. Statistical analysis was done using one-way ANOVA, followed by Tukey’s post hoc test for pair-wise comparison. Results: Caesalpinia sapans, Vetiveria zizanioides, Acacia catechu, Eugenia caryophyllus, and Coriandrum sativum, had a significant ability to adsorb fluoride from fluoridated water, with an efficiency ranging from 12% to 56% (at a baseline concentration of 10 ppm) and 19% to 82% (at a baseline concentration of 5 ppm). Conclusion: The study indicates the possibility of the use of five ingredients in developing a cost-effective and acceptable method of defluoridation based on the adsorption method.","PeriodicalId":51877,"journal":{"name":"Environmental Health Engineering and Management Journal","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2022-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47035718","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: 1

Production of fuel briquette from solid waste biomass using natural resin as a binder 以天然树脂为粘结剂利用固体废弃物生物质生产燃料成型块

IF 1.6

Environmental Health Engineering and Management Journal Pub Date : 2022-12-05 DOI: 10.34172/ehem.2022.34

Abreham Bekele Bayu, Surafel Mustefa Beyan, T. A. Amibo, D. Mekonnen

{"title":"Production of fuel briquette from solid waste biomass using natural resin as a binder","authors":"Abreham Bekele Bayu, Surafel Mustefa Beyan, T. A. Amibo, D. Mekonnen","doi":"10.34172/ehem.2022.34","DOIUrl":"https://doi.org/10.34172/ehem.2022.34","url":null,"abstract":"Background: This research aimed to evaluate the use of natural resin as a binder for the production of fuel briquette from solid waste biomass. Methods: Proximate analyses were made for fuel briquette prepared from solid waste biomass using natural resin as a binder in comparison with using starch as a binder. Results: The results for density, percent content of moisture, percent content of volatile matter, percent content of ash, percent content of fixed carbon, and the caloric value of solid waste biomass obtained were 158.23 kg/m3 , 18.25%, 65.99%, 4.78%, 10.98%, and 18.65 MJ/kg, respectively. Besides natural resin binder-used fuel briquette was characterized for its density, percent content of porosity weight index, percent content of shatter resistance, percent content of moisture content, percent content of volatile matter, percent content of ash content, percent content of fixed carbon content, and caloric values as 751.05 kg/m3 , 13%, 40%, 4%, 12%, 1%, 30%, and 27.05 MJ/kg, respectively. In the same way, the starch binder-used fuel briquette was characterized for its density, percent content of porosity, weight index, percent content of shatter resistance, percent content of moisture content, percent content of volatile matter, percent content of ash, percent content of fixed carbon, and caloric values as 760 kg/m3 , 10%, 42%, 4%, 11%, 2%, 31%, and 28.09 MJ/kg, respectively. Conclusion: According to the results of the study, it can be concluded that all characterized properties using natural resin as a binder indicate almost comparative properties in comparison with the use of starch as a binder.","PeriodicalId":51877,"journal":{"name":"Environmental Health Engineering and Management Journal","volume":"1 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2022-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41870425","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: 0

Modeling and predicting trends of heat stress based on climate change phenomenon: A case study in a semi-arid climate 基于气候变化现象的热应力建模与趋势预测:以半干旱气候为例

IF 1.6

Environmental Health Engineering and Management Journal Pub Date : 2022-12-03 DOI: 10.34172/ehem.2022.43

M. Asghari, G. Fallah Ghalhari, Hamid Heidari, R. Moradzadeh, S. Samadi, Reza Tajik, M. Ghanadzadeh

{"title":"Modeling and predicting trends of heat stress based on climate change phenomenon: A case study in a semi-arid climate","authors":"M. Asghari, G. Fallah Ghalhari, Hamid Heidari, R. Moradzadeh, S. Samadi, Reza Tajik, M. Ghanadzadeh","doi":"10.34172/ehem.2022.43","DOIUrl":"https://doi.org/10.34172/ehem.2022.43","url":null,"abstract":"Background: Climate change is one of the most complex human challenges in the future. One of the consequences of climate change is the exposure of people to heat stress, especially in the outdoor environments. The aim of this study was to model the changes in the trend of exposure to heat stress in outdoor environments in the coming decades in the context of climate change and global warming. Methods: The Wet Bulb Globe Temperature (WBGT) index, Canadian Earth System Model (CanESM2), and the Statistical Down Scaling Model (SDSM) were used in a semi-arid climate. In this study, Arak station was considered as a representative of Iran’s semi-arid climate. In this research, the daily data of the minimum and maximum temperatures, humidity, and WBGT index were used from 2011 to 2099. Results: The minimum and maximum air temperatures in the study station show an increasing trend in three time periods. Also, based on the three studied scenarios, air temperature and WBGT index have an upward and positive trend and relative humidity has a downward and negative trend in the coming decades. Conclusion: In general, increasing the exposure of people to heat stress at the study station in the coming decades and based on the simulations of atmospheric general circulation models (GCMs), will not be unexpected.","PeriodicalId":51877,"journal":{"name":"Environmental Health Engineering and Management Journal","volume":"1 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2022-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69815036","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: 0

Microbiological contamination of commercial enteral feeding and blenderized tube feeding: A systematic review 商业肠内喂养和混合管喂养的微生物污染：系统综述

IF 1.6

Environmental Health Engineering and Management Journal Pub Date : 2022-11-23 DOI: 10.34172/ehem.2022.38

Behnam Bahramian, M. Sarabi-Jamab, Elyas Nattagh‐Eshtivani, M. Rezaie

{"title":"Microbiological contamination of commercial enteral feeding and blenderized tube feeding: A systematic review","authors":"Behnam Bahramian, M. Sarabi-Jamab, Elyas Nattagh‐Eshtivani, M. Rezaie","doi":"10.34172/ehem.2022.38","DOIUrl":"https://doi.org/10.34172/ehem.2022.38","url":null,"abstract":"Background: All types of enteral feeding (EF) formulations, whether blenderized tube feeding (BTF) at hospital kitchen, or commercial enteral feeding (CEF), contains nutrients. The nature of these foods (in terms of pH, nutrient contents, water activity, etc.) is so that if they become contaminated, would immediately grow pathogens inside and put the patient at the risk of infection. This systematic review aimed to investigate the microbial safety of BTF and CEF used in hospitals. Methods: Literature search was conducted in four English databases, including Scopus, PubMed, Science Direct, and Google Scholar, using multiple keywords, such as enteral nutrition, blenderized formulas, home enteral nutrition, enteral formula, EF, blenderized enteral formula, blended feeds, blenderized home-made food, CEF, microbial contamination, and bacterial contamination. Finally, 16 eligible studies were selected for the systematic review. Results: Out of 132 retrieved articles, 16 were selected and reviewed CEF was mostly exposed to contamination with total coliforms, Staphylococcus aureus, mesophilic bacteria, and Escherichia coli. In addition, contamination with gram-negative bacteria, Bacillus cereus, mold, and yeast was detected. Most BTF contamination was caused by total coliforms, mesophilic bacteria, Listeria spp., B. cereus, mold, and yeast. Conclusion: Due to the nonconformity of hygienic guidelines, the microbial safety of EF solutions in hospitals and homes are relatively low, which may lead to foodborne diseases. Therefore, a hazard analysis and critical control point (HACCP) system is essential in every hospital kitchen.","PeriodicalId":51877,"journal":{"name":"Environmental Health Engineering and Management Journal","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2022-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45200740","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: 1