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Journal of Environmental Health Science & Engineering

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https://read.qxmd.com/read/30729004/cytotoxicity-and-genotoxicity-effects-of-water-boiled-in-aluminum-vessels-on-allium-cepa-root-tip-cells
#1
Zahra Zendehboodi
Cookwares made from aluminum (Al) are supposed to be a potential source of Al contamination of food. In this study, the cytotoxicity and genotoxicity effects of water boiled in aluminum cookwares on the dividing cells of onion root tip were examined using Allium cepa assay. Three used aluminum cookwares from different sources were selected. Distilled water was gently boiled in each pot and then used for growing onions. The cells of root tip were analyzed for mitotic and phase indexes as well as aberrations appeared in the interphase and mitotic phase...
December 2018: Journal of Environmental Health Science & Engineering
https://read.qxmd.com/read/30729003/breast-milk-contamination-with-lead-and-cadmium-and-its-related-factors-in-kerman-iran
#2
Narges Khanjani, Majideh Jafari, Effat Ahmadi Mousavi
Background: Heavy metals may be carcinogenic and have serious health effects in humans. In this study, levels of lead (Pb) and cadmium (Cd) in human milk samples from Kerman, Iran were evaluated. Methods: One-hundred breast milk samples were collected from mothers visiting 20 maternal and child care centers. Demographic, diet and smoking data was collected for each mother. Samples were analyzed by Graphite Furnace Atomic Absorption Spectrometry. Statistical analysis was done in Minitab15, through non-parametric methods, Spearman's correlation and chi-square...
December 2018: Journal of Environmental Health Science & Engineering
https://read.qxmd.com/read/30729002/an-investigation-of-thermal-environment-of-an-existing-ufad-system-in-a-high-rise-office-building-in-the-tropics
#3
Yat Huang Yau, Kai Sin Poh, Ahmad Badarudin
The current case study was conducted to identify the causes of environmental health issues in the office space associated with the existing Underfloor Air Distribution (UFAD) system in a high-rise office building in the tropics. The causes of the indoor environmental quality degradation are the key to resolve the environmental health issues. Thus, the parameters such as the indoor air temperature, relative humidity (RH), relative air velocity, carbon monoxide (CO), carbon dioxide (CO2 ), formaldehyde, total volatile organic compound (TVOC) and particulate matter (PM10 ) were evaluated in five office spaces...
December 2018: Journal of Environmental Health Science & Engineering
https://read.qxmd.com/read/30729001/solid-waste-composition-and-the-properties-of-biodegradable-fractions-in-izmir-city-turkey-an-investigation-on-the-influencing-factors
#4
Ayşenur Bölükbaş, Görkem Akıncı
Background: Waste composition and characteristics are determinative in selecting technological alternatives to develop waste management strategies that can meet legislative requirements. The aim of this study is to identify the major factors influencing the municipal solid waste (MSW) composition and the properties of its biodegradable fraction in İzmir city, Turkey. Methods: MSW composition was determined in samples collected from different income level areas of the city...
December 2018: Journal of Environmental Health Science & Engineering
https://read.qxmd.com/read/30729000/providing-an-optimal-porous-absorbent-pattern-to-reduce-mid-to-low-frequency-sounds
#5
Mohammad Javad Jafari, Mohammad Reza Monazam, Marzieh Kazempour
Noise is definitely a nuisance to the quality of people's lives and health. In recent decades the public has suffered from industrial and environmental noise and its control has had a desirable impact on people's lives. Though noise cannot be completely eliminated, it can be mitigated to a level that it is less harmful to people's health. One of the ways for obtaining these pleasing environment is to design and use the absorbing sound materials. Fibrous and porous materials are the ordinary absorptive materials that are not good absorbers for low and mid frequency sounds...
December 2018: Journal of Environmental Health Science & Engineering
https://read.qxmd.com/read/30728999/comparative-investigation-of-argon-and-argon-oxygen-plasma-performance-for-perchloroethylene-pce-removal-from-aqueous-solution-optimization-and-kinetic-study
#6
Mostafa Karimaei, Babak Shokri, Mohammad Reza Khani, Kamyar Yaghmaeian, Alireza Mesdaghinia, Ramin Nabizadeh, Amir Hossein Mahvi, Shahrokh Nazmara
Purpose: The aim of this study is evaluation of the perchloroethylene degradation from aqueous solutions by non-thermal plasma produced in dielectric barrier discharge reactor in two different scenarios: first plasma generated with 225 cc/min mixture of oxygen and argon flow (12% gas ratio of O2 /Ar), and in the second scenario plasma generated with 225 cc/min of pure argon gas. Methods: Design studies were performed using response surface methodology and central composite design...
December 2018: Journal of Environmental Health Science & Engineering
https://read.qxmd.com/read/30728998/qualitative-and-health-related-evaluation-of-point-of-use-water-treatment-equipment-performance-in-three-cities-of-iran
#7
Salimeh Rezaeinia, Simin Nasseri, Masoud Binesh, Farid Ghalambor Dezfuli, Safieh Abdolkhani, Mitra Gholami, Neamat Jaafarzadeh
Background: Application of the point-of-use water treatment (POU-WT) systems has consistently increased during the last decade in Iran. In this study, the qualitative performances of reverse osmosis-based POU devices in selected cities of Iran were investigated. Methods: This applied- descriptive study was conducted in three cities of Tehran, Rasht, and Ahvaz in 2016 (selected based on the level of POU devices sale index in three phases). After choosing the most popular five brands of six stages POU devices, 360 water sampling zones and POU consumer households of the selected cities were measured...
December 2018: Journal of Environmental Health Science & Engineering
https://read.qxmd.com/read/30728997/treatment-of-paper-recycling-wastewater-by-electrocoagulation-using-aluminum-and-iron-electrodes
#8
Ali Izadi, Morteza Hosseini, Ghasem Najafpour Darzi, Gholamreza Nabi Bidhendi, Farshid Pajoum Shariati
Treatment of industrial wastewater by electrocoagulation (EC) is one of the most efficient methods to remove pollutants. Paper-recycling wastewater is a complex mixture containing toxic and recalcitrant substances, indicating complexity and difficulty of its treatment. The aim of the present study was to assess the effectiveness of paper-recycling wastewater treatment by EC process using aluminum (Al) and iron (Fe) plate electrodes. Removal of chemical oxygen demand (COD), total suspended solids (TSS), color and ammonia from paper-recycling mill effluent was evaluated at various electrolysis times (10-60 min), voltage (4-13 V) and pH (3...
December 2018: Journal of Environmental Health Science & Engineering
https://read.qxmd.com/read/30728996/knowledge-attitude-and-practice-among-food-handlers-of-semi-industrial-catering-a-cross-sectional-study-at-one-of-the-governmental-organization-in-tehran
#9
Razeghi Fariba, Jahed Khaniki Gholamreza, Nedjat Saharnaz, Haghi Ehsan, Yunesian Masoud
Purpose: food handlers have an important role in transmitting pathogens from raw materials to cooked ones. This study was conducted to determine the knowledge, attitude, and practice (KAP) of 95 food handlers on five keys to safer food based on World Health Organization questionnaires in semi-industrial catering in a government office in Tehran. Materials and methods: specialists reviewed the validity of questionnaires and reliability was measured using determination of inter rater agreement, relevancy and clarity of each question, and the tool as a whole was evaluated by the content validity method...
December 2018: Journal of Environmental Health Science & Engineering
https://read.qxmd.com/read/30728995/effect-of-br%C3%A3-nsted-acidity-of-hy-zeolites-in-adsorption-of-methylene-blue-and-comparative-study-with-bentonite
#10
T Kasmi, A Soualah, S Mignard, I Batonneau-Gener
In the present study, HY zeolite with various Si/Al ratios have been used as adsorbents for the removal of a cationic dye; methylene blue, from aqueous solution using a batch process, and a comparative study with bentonite was conducted. Characterizations of the adsorbents were carried out by nitrogen adsorption-desorption, pyridine chemisorption followed by infrared spectroscopy and X-ray fluorescence. The effects of various parameters such as contact time, initial MB concentration, adsorbent concentration and solution pH were investigated...
December 2018: Journal of Environmental Health Science & Engineering
https://read.qxmd.com/read/30728994/concentration-and-potential-source-identification-of-trace-elements-in-wet-atmospheric-precipitation-of-shiraz-iran
#11
Sahar Mirzaei, Hassan Hashemi, Mohammad Hoseini
The aim of this study was to investigate the concentration of trace elements in wet atmospheric precipitation samples collected at six stations in Shiraz, southwest of Iran and identify their possible sources. In this study, 36 rainwater samples were collected from five urban stations and one suburban station during the rainy season spanning 2016 to 2017. Samples were analyzed for 19 trace elements using inductively coupled plasma-atomic emission spectrometry (ICP-AES). Principal component analysis (PCA) with varimax-normalized rotation was used to identify potential sources of the elements measured in the wet atmospheric precipitation...
December 2018: Journal of Environmental Health Science & Engineering
https://read.qxmd.com/read/30728993/degradation-of-uv-filter-benzophenon-3-in-aqueous-solution-using-tio-2-coated-on-quartz-tubes
#12
Nazanin Moradi, Mohammad Mehdi Amin, Ali Fatehizadeh, Zahra Ghasemi
Background: Benzophenone-3 (BP-3), one of the emerging pollutants, is commercially synthesized as UV filter used in cosmetics and other personal care products and its occurrence in the aquatic environment has widely been reported. The goal of this study was to enhance an AOP method for degradation of UV filter Benzophenone-3 in aqueous solutions . Method: In this study, sol-gel method was applied to synthesis TiO2 nanoparticles. Subsequently, the nanoparticles were successfully coated on quartz tubes...
December 2018: Journal of Environmental Health Science & Engineering
https://read.qxmd.com/read/30728992/assessment-of-microbial-roles-in-the-bioconversion-of-paper-mill-sludge-through-vermicomposting
#13
Ram Kumar Ganguly, Susanta Kumar Chakraborty
Purpose: Main thrust of the present study is to determine the role of microbes in changing the proportion and turnover of nutrients such as carbon and nitrogen during vermicomposting of paper mill sludge through the assessment of β-glucosidase and Leucine arylamidase activities. Methods: The change in the ratio of Total Organic Carbon (TOC) and Total Kjeldahl Nitrogen (TKN) during sludge composting using paper mill sludge, cow dung, straw in the ratio of 5:4:1 have been determined alongside observing β-glucosidase and Leucine arylamidase activities in different phases (0th, 30th and 60th days) of vermicomposting...
December 2018: Journal of Environmental Health Science & Engineering
https://read.qxmd.com/read/30728991/utilization-of-dust-and-ammonia-from-exhaust-gases-new-solutions-for-dryers-with-different-types-of-fluidized-bed
#14
Аrtem Аrtyukhov, Nadiia Аrtyukhova
Background: The article is devoted to the development of new utilization methods of exhaust gases by cleaning them from fine particles, dust and harmful gas components. The basic design solutions, which allow to increase the degree of exhaust gases cleaning, were presented. The effectiveness of design solutions was supported by the results of experimental studies. Analysis of the research results allowed developing of new designs of equipment for dehydration in fluidized bed. The article also presents the calculation algorithm of eco-friendly dryers with fluidized bed...
December 2018: Journal of Environmental Health Science & Engineering
https://read.qxmd.com/read/30728990/an-integrated-methodology-for-establishing-industrial-effluent-limits-in-developing-countries-iran-as-a-case-study
#15
Maryam Mahjouri, Mohd Bakri Ishak, Ali Torabian, Latifah Abd Manaf, Normala Halimoon
Background: Environmental policies should be developed in a contextual decision-making process regarding local environmental concerns emphasizing the economic, technical, social and institutional considerations. Establishing emission limit levels, especially in the industrial sector, is one of the most problematic environmental issues in developing countries, for which it is essential to include several criteria that reflect their country-specific constraints and capacities. Since Best Available Technology (BAT) is acknowledged to be the reference element for sustainable development and a basis for Emissions Limit Values (ELVs), the objective of this study is to present a reliable methodology for establishing ELVs thresholds with an emphasis on the BAT concept for national regulation at the sector level...
December 2018: Journal of Environmental Health Science & Engineering
https://read.qxmd.com/read/30728989/evaluate-the-types-and-amount-of-genotoxic-waste-in-tehran-university-of-medical-science-s-hospitals
#16
Leila Ghasemi, Samira Yousefzadeh, Noushin Rastkari, Kazem Naddafi, Nabi Shariati Far, Ramin Nabizadeh
Purpose: Genotoxic wastes are one type of hospital wastes that are extremely dangerous and may cause cell mutation or cancer and their disposal should be taken seriously. Cytotoxic drugs are main component of these wastes. The purpose of this study was to determine the types and quantities of genotoxic wastes in hospitals of Tehran University of Medical Sciences and evaluation of genotoxic waste management index. Methods: For this purpose, a questionnaire was used to collect data...
December 2018: Journal of Environmental Health Science & Engineering
https://read.qxmd.com/read/30728988/biohydrogen-production-under-hyper-salinity-stress-by-an-anaerobic-sequencing-batch-reactor-with-mixed-culture
#17
Ensiyeh Taheri, Mohammad Mehdi Amin, Ali Fatehizadeh, Hamidreza Pourzamani, Bijan Bina, Henri Spanjers
Background: This study investigated the effect of organic loading rate (OLR) and NaCl concentration on biohydrogen production by preheated anaerobic sludge in a lab scale anaerobic sequencing batch reactor (ASBR) fed with glucose during long time operation. Methods: During ASBR operation, the OLR was increased in steps from 0.5 to 5 g glucose/L.d and NaCl addition started at an OLR of 5 g glucose/L.d, to obtain NaCl concentrations in the reactor in the range of 0...
December 2018: Journal of Environmental Health Science & Engineering
https://read.qxmd.com/read/30728987/physiochemical-characteristics-and-oxidative-potential-of-ambient-air-particulate-matter-pm-10-during-dust-and-non-dust-storm-events-a-case-study-in-tehran-iran
#18
Soheila Rezaei, Kazem Naddafi, Mohammad Sadegh Hassanvand, Ramin Nabizadeh, Masud Yunesian, Maryam Ghanbarian, Zahra Atafar, Maryam Faraji, Shahrokh Nazmara, Babak Mahmoudi, Mohammad Ghanbari Ghozikali, Masoud Ghanbarian, Akbar Gholampour
In the present study, we investigated the characteristics of metal(loid)s, polycyclic aromatic hydrocarbons (PAHs) and oxidative potential (OP) in PM10 during dust and non-dust days in a rural and an urban area in Tehran. Water-soluble ions, metal(loid)s, PAHs, and OP were measured using ion chromatography (IC), inductively coupled plasma optical emission spectrometer (ICP-OES) and gas chromatography/mass spectrometry (GC-MS), and dithiothreitol (DTT) assay respectively. The results showed that the average concentrations of ambient PM10 were 284 ± 90...
December 2018: Journal of Environmental Health Science & Engineering
https://read.qxmd.com/read/30728986/large-scale-association-analysis-of-climate-drought-and-decline-in-groundwater-quantity-using-gaussian-process-classification-case-study-609-study-area-of-iran
#19
Saeed Azimi, Mehdi Azhdary Moghaddam, Seyed Arman Hashemi Monfared
Background: The level of groundwater resources is changing rapidly and this requires the discovery of newer groundwater resources. Drought is one of the most significant natural phenomena affecting different aspects of human life and environment. During the last decades, the application of artificial intelligent techniques has been recognized as effective approaches to forecast an annual precipitation rate. Method: In this study, the association analysis of climate drought and a decline in groundwater level is addressed using Gaussian process classification (GPC) and backpropagation (BP) artificial neural network (ANN)...
December 2018: Journal of Environmental Health Science & Engineering
https://read.qxmd.com/read/30728985/determination-of-radon-exhalation-rates-in-soil-samples-using-sealed-can-technique-and-cr-39-detectors
#20
Khalil M Thabayneh
Background: In this study, the so-called sealed can technique dosimeters have been used to determine the radon exhalation rates in soil samples collected from different sites in Bethlehem region- Palestine. Methods: For the measurement of radon concentration emanated from these samples, alpha-sensitive, Solid State Nuclear Track Detectors (SSNTD's) have been used. A total of 82 soil samples were collected simultaneously. Results: It was found that the radon concentrations in these soil samples varied from 19...
December 2018: Journal of Environmental Health Science & Engineering
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