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Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering

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https://www.readbyqxmd.com/read/29148928/spatiotemporal-variations-and-relationship-of-pm-and-gaseous-pollutants-based-on-gray-correlation-analysis
#1
Yong Y Zhang, Ying Jia, Ming Li, Li A Hou
The present work characterizes the spatiotemporal variations of air pollution at four sites in Xi'an city. The investigations lasted for 1 year: January 1 through December 31, 2015. The concentrations of CO, NO2, O3, PM and SO2 were systematically monitored. The gray correlation analysis was used to correlate PM2.5 and gaseous pollutants. The formation mechanisms of sulfate and nitrate aerosols were discussed. Results clearly revealed severe air pollution by PM2.5, PM10 and NO2 at all four sites. Significant monthly variations were observed for PM2...
November 17, 2017: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/29148923/ames-and-random-amplified-polymorphic-dna-tests-for-the-validation-of-the-mutagenic-and-or-genotoxic-potential-of-the-drinking-water-disinfection-by-products-chloroform-and-bromoform
#2
Messaouda Khallef, Süleyman Cenkci, Dilek Akyil, Arzu Özkara, Muhsin Konuk, Djamel Eddine Benouareth
Chloroform and Bromoform are two abundant trihalomethanes found in Algerian drinking water. The investigation of the mutagenic hazard of these disinfection by-products was studied by Ames test as prokaryotic bioassay to show their mutagenic effects. For this, Salmonella typhimurium TA98 and TA100 strains were employed. Both chloroform and bromoform showed a direct mutagenic effect since the number of revertant colonies gradually increase in dose-dependent manner with all concentrations tested with the two bacterial strains and these were both in the absence and presence of S9 metabolic activation...
November 17, 2017: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/29148919/bacterial-flora-analysis-of-coliforms-in-sewage-river-water-and-ground-water-using-maldi-tof-mass-spectrometry
#3
Yoshihiro Suzuki, Kouki Niina, Tomonori Matsuwaki, Kei Nukazawa, Atsushi Iguchi
The aim of this study was to rapidly and effectively analyze coliforms, which are the most fundamental indicators of water quality for fecal pollution, using matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF MS). Coliform bacteria were isolated from municipal sewage, river water, and groundwater. For each sample, 100 isolates were determined by MALDI-TOF MS. In addition, these same 100 isolates were also identified via 16S rRNA gene sequence analysis. Obtained MALDI-TOF MS data were compared with the 16S rRNA sequencing analysis, and the validity of MALDI-TOF MS for classification of coliform bacteria was examined...
November 17, 2017: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/29148917/evaluation-of-antibacterial-activity-and-toxic-metal-removal-of-chemically-synthesized-magnetic-iron-oxide-titanium-coated-nanoparticles-and-application-in-bacterial-treatment
#4
Yasser A M Abdulhady, Mona M El-Shazly, Reham F El-Kased
Co-precipitation method was used for preparation of two types of iron oxide nanoparticles coated by titanium dioxide according to divalent salts used. The average size of iron oxide nanoparticles coated by titanium dioxide measured by particle size analyzer, ranged approximately between 20 nm and 100 nm with mean particle size of 60 nm. Characterization of the prepared nanoparticles was done by X-ray diffraction analysis and scanning electron microscope indicating the sole existence of inverse cubic spinel phase of magnetic iron oxide nanoparticles...
November 17, 2017: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/29148916/time-and-spatial-variability-in-the-concentrations-of-selected-metals-in-water-and-bottom-sediments-of-p%C3%A5-awniowice-and-dzier%C3%A5-no-ma%C3%A5-e-reservoirs-poland
#5
Rajmund Michalski, Maciej Kostecki, Joanna Kernert, Katarzyna Nocoń, Katarzyna Stahl, Zuzanna Bernaś, Michał Chrobok, Magdalena Jabłońska-Czapla
The migration of metals and metalloids between bottom sediments and water and the other way round is a complex process. Understanding those mechanisms is essential for recognizing transformations taking place in water reservoir ecosystems. The objective behind the following study was to define time and spatial correlations in the changes in total concentrations of selected elements (Cr, Zn, Co, Mn, Cu, Ni, Pb, As, Ba, Sb, Sr and V) in waters and bottom sediments from two water reservoirs located in Upper Silesia (Poland), i...
November 17, 2017: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/29148897/oxidative-stress-response-in-sh-sy5y-cells-exposed-to-short-term-1800%C3%A2-mhz-radiofrequency-radiation
#6
Ana Marija Marjanovic Cermak, Ivan Pavicic, Ivancica Trosic
The exact mechanism that could explain the effects of radiofrequency (RF) radiation exposure at non-thermal level is still unknown. Increasing evidence suggests a possible involvement of reactive oxygen species (ROS) and development of oxidative stress. To test the proposed hypothesis, human neuroblastoma cells (SH-SY5Y) were exposed to 1800 MHz short-term RF exposure for 10, 30 and 60 minutes. Electric field strength within Gigahertz Transverse Electromagnetic cell (GTEM) was 30 V m(-1) and specific absorption rate (SAR) was calculated to be 1...
November 17, 2017: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/29125395/microbiota-of-the-ground-air-layers-in-natural-and-industrial-zones-of-the-kola-arctic
#7
Maria V Korneykova, Galina A Evdokimova
The fungi and bacteria number, as well as the species composition of the fungi in the ground air layer in the European Arctic region of Russia, primarily in the tundra (the Rybachy Peninsula), in the subzone of the northern taiga (the Pasvik State Nature Reserve) and in the industrial areas (the Copper-Nickel Plant "Pechenganickel," the Kandalaksha Aluminum Plant) have been studied. One hundred and ninety-two atmosphere air samples of various ecosystems have been analyzed. The sample collection took place in the summer-autumn period (June, July, September, in 2012-2015) with the aspirator, precipitating microorganisms on the surface of media...
November 10, 2017: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/29120696/assessment-of-long-term-ecotoxicity-of-urban-stormwaters-using-a-multigenerational-bioassay-on-ceriodaphnia-dubia-a-preliminary-study
#8
Antoine Gosset, Adriana Wigh, Sylvie Bony, Alain Devaux, Rémy Bayard, Claude Durrieu, Melissa Brocart, Marine Applagnat, Christine Bazin
Standardized ecotoxicity bioassays show some limits to assess properly long-term residual toxicity of complex mixture of pollutants often present at low concentration, such as stormwaters. Among invertebrate organisms used for ecotoxicity testing, the microcrustacean Ceriodaphnia dubia (C. dubia) is considered as one of the most sensitive, especially regarding reproduction impairment as a toxicity endpoint. Consequently, this work explores the interest to perform a multigenerational assay based on the study of the reproduction of C...
November 9, 2017: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/29111871/temporal-trend-in-the-levels-of-polycyclic-aromatic-hydrocarbons-emitted-in-a-big-tire-landfill-fire-in-spain-risk-assessment-for-human-health
#9
Joaquim Rovira, Noelia Domínguez-Morueco, Martí Nadal, Marta Schuhmacher, José L Domingo
In May 2016, a big fire occurred in an illegal landfill placed in Seseña (Toledo, Spain), where between 70,000 and 90,000 tons of tires had been accumulated during years. Just after the fire, and because of the increase of airborne PAHs, we found that cancer risks for the population living in the neighborhood of the landfill were 3-5 times higher than for the rest of inhabitants of Seseña. Some months after our initial (June 2016) study, two sampling campaigns (December 2016 and May 2017) were performed to assess the temporal trends of the environmental levels of PAHs, as well as to reassure that these chemicals did not pose any risk for the human health of Seseña inhabitants...
November 7, 2017: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/29111865/determination-of-pharmaceutical-compounds-in-hospital-wastewater-and-their-elimination-by-advanced-oxidation-processes
#10
Fernanda S Souza, Vanessa V Da Silva, Catiusa K Rosin, Luana Hainzenreder, Alexandre Arenzon, Tania Pizzolato, Louise Jank, Liliana A Féris
This study investigates the mineralization efficiency, i.e. removal of total organic carbon (TOC) in hospital wastewater by direct ozonation, ozonation with UV radiation (O3/UV), homogeneous catalytic ozonation (O3/Fe(2+)) and homogeneous photocatalytic ozonation (O3/Fe(2+)/UV). The influence of pH and reaction time was evaluated. For the best process, toxicity and degradation efficiency of the selected pharmaceutical compounds (PhCs) were determined. The results showed that the PhCs detected in the hospital wastewater were completely degraded when the mineralization efficiency reached 54...
November 7, 2017: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/29111848/study-on-the-effect-of-total-dissolved-solids-tds-on-the-performance-of-an-sbr-for-cod-and-nutrients-removal
#11
Sarah Xiao Wu, Jason Maskaly
In this study, the effect of total dissolved solids (TDS) on the performance of a sequencing batch reactor (SBR) system to treat synthetic wastewater with microbial inoculum was evaluated. The SBR was operated continuously for eight days on a 6-h cycle with anaerobic/anoxic/aerobic phases in each cycle after entering the steady state, and the influent TDS was tested at five levels, i.e., 750, 1500, 3000, 4500, and 6000 mg L(-1). The results showed that only two TDS levels (750 and 1500 mg L(-1)) could achieve good COD removal efficiencies (94...
November 7, 2017: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/29087788/determination-and-risk-assessment-of-sixteen-polycyclic-aromatic-hydrocarbons-in-vegetables
#12
Huidong Li, Duanwei Zhu, Xiao Lu, Hongxia Du, Shuai Guan, Zilei Chen
Polycyclic aromatic hydrocarbons (PAHs) are a group of organic environmental pollutants posing a potential risk to human health. This study was constructed to investigate the presence of 16 PAHs in six commonly consumed vegetables collected from the markets in Shandong, China by a quick, easy, cheap, effective, rugged, safe (QuEChERS)-based extraction method coupled with gas chromatography-mass spectrometry (GC-MS). Our results showed that the vegetables were polluted with PAHs at an alarming level, of which celery contained the highest total concentration of PAHs (Σ16 PAH), whereas cucumbers contained the lowest Σ16 PAH...
October 31, 2017: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/29087780/integrated-aerobic-biological-chemical-treatment-of-winery-wastewater-diluted-with-urban-wastewater-led-based-photocatalysis-in-the-presence-of-monoperoxysulfate
#13
Rafael R Solís, Francisco Javier Rivas, Leonor C Ferreira, Antonio Pirra, José A Peres
The oxidation of Winery Wastewater (WW) by conventional aerobic biological treatment usually leads to inefficient results due to the presence of organic substances, which are recalcitrant or toxic in conventional procedures. This study explores the combination of biological and chemical processes in order to complete the oxidation of biodegradable and non-biodegradable compounds in two sequential steps. Thus, a biological oxidation of a diluted WW is carried out by using the activated sludge process. Activated sludge was gradually acclimated to the Diluted Winery Wastewater (DWW)...
October 31, 2017: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/29083952/a-software-sensor-model-based-on-hybrid-fuzzy-neural-network-for-rapid-estimation-water-quality-in-guangzhou-section-of-pearl-river-china
#14
Chunshan Zhou, Chao Zhang, Di Tian, Ke Wang, Mingzhi Huang, Yanbiao Liu
In order to manage water resources, a software sensor model was designed to estimate water quality using a hybrid fuzzy neural network (FNN) in Guangzhou section of Pearl River, China. The software sensor system was composed of data storage module, fuzzy decision-making module, neural network module and fuzzy reasoning generator module. Fuzzy subtractive clustering was employed to capture the character of model, and optimize network architecture for enhancing network performance. The results indicate that, on basis of available on-line measured variables, the software sensor model can accurately predict water quality according to the relationship between chemical oxygen demand (COD) and dissolved oxygen (DO), pH and NH4(+)-N...
October 30, 2017: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/29064740/organophosphorus-flame-retardants-pfrs-and-phthalates-in-floor-and-road-dust-from-a-manual-e-waste-dismantling-facility-and-adjacent-communities-in-thailand
#15
Dudsadee Muenhor, Hyo-Bang Moon, Sunggyu Lee, Emma Goosey
This study was undertaken to investigate levels of organophosphorus flame retardants (PFRs) and phthalates in floor and road dust from a manual e-waste dismantling facility and nearby communities in Thailand. Concentrations of Σ10 PFRs and Σ6 phthalates in floor dust from the facility were approximately 36-1,700 and 86,000-790,000 ng g(-1), whereas those from the communities were about 13-9,200 and 44,000-2,700,000 ng g(-1), respectively. The highest content of Σ10 PFRs (9,200 ng g(-1)) and Σ6 phthalates (2,700,000 ng g(-1)) in indoor dust was both detected in the dust sampled from a house with no prevailing winds located 350 m northeast of the facility...
October 24, 2017: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/29053945/tree-uptake-of-excess-nutrients-and-herbicides-in-a-maize-olive-tree-cultivation-system
#16
George Pavlidis, Vassilios A Tsihrintzis, Helen Karasali, Dimitrios Alexakis
Due to the extent of non-point source agricultural pollution, protective measures to control agrochemicals from entering aquatic systems are necessary. Measures may include, among others, vegetated buffer strips (VFS), no spray buffer zones, alley crops and agroforestry systems (AFS). The scope of the present work is to examine the pollution abatement potential of a maize-olive (MO) AFS. The efficiency of a combined MO trees system in reducing nutrients and herbicides is tested through soil monitoring in an experimental plot, located in Koropi, Eastern Attica, Greece, in the period May 2015 to November 2015...
October 20, 2017: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/29053931/removal-of-cu-ii-in-water-by-polymer-enhanced-ultrafiltration-influence-of-polymer-nature-and-ph
#17
Olga D Kochkodan, Viktor M Kochkodan, Virender K Sharma
This study presents an efficient removal of Cu(II) in water using the polymer enhanced ultrafiltration (PEUF) method. Polymer of different molecular weight (MW) (polyethyleneimine (PEI), sodium lignosulfonates (SLS) and dextrans) were investigated to evaluate efficiency in removal of Cu(II) in water by the PEUF method. The decomposition of Cu(II)-polymer complex was also evaluated in order to reuse polymers. Cu(II) complexation depends on the MW of chelating polymer and the pH of feed solution. It was found that the Cu(II) rejection increased with the polymer dosage with high removal of Cu(II) when using PEI and SLS at a 10:20 (mg/mg) ratio ([Cu(II)]:[polymer])...
October 20, 2017: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/29035679/performance-and-membrane-fouling-of-a-step-fed-submerged-membrane-sequencing-batch-reactor-treating-swine-biogas-digestion-slurry
#18
Zhiying Han, Shixia Chen, Xiaochang Lin, Hongjun Yu, Li'an Duan, Zhangying Ye, Yanbo Jia, Songming Zhu, Dezhao Liu
To identify the performance of step-fed submerged membrane sequencing batch reactor (SMSBR) treating swine biogas digestion slurry and to explore the correlation between microbial metabolites and membrane fouling within this novel reactor, a lab-scale step-fed SMSBR was operated under nitrogen loading rate of 0.026, 0.052 and 0.062 g NH4(+)-N (gVSS·d)(-1). Results show that the total removal efficiencies for NH4(+)-N, total nitrogen and chemical oxygen demand in the reactor (>94%, >89% and >97%, respectively) were high during the whole experiment...
October 16, 2017: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/29035674/the-startup-performance-and-microbial-distribution-of-an-anaerobic-baffled-reactor-abr-treating-medium-strength-synthetic-industrial-wastewater
#19
Hao Jiang, Hong Nie, Jiangtao Ding, Walter Stinner, Kaixuan Sun, Hongjun Zhou
In this study, an anaerobic baffled reactor (ABR) with seven chambers was applied to treat medium-strength synthetic industrial wastewater (MSIW). The performance of startup and shock test on treating MSIW was investigated. During the acclimation process, the chemical oxygen demand (COD) of MSIW gradually increased from 0 to 2,000 mg L(-1), and the COD removal finally reached 90%. At shock test, the feeding COD concentration increased by one-fifth and the reactor adapted very well with a COD removal of 82%...
October 16, 2017: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/29035671/selection-of-electrogenic-bacteria-for-microbial-fuel-cell-in-removing-victoria-blue-r-from-wastewater
#20
Chih-Yu Chen, Teh-Hua Tsai, Pei-Ssu Wu, Shuo-En Tsao, Yu-Shan Huang, Ying-Chien Chung
This study was conducted to select electrogenic bacteria from wastewater sludge. Phylogenetic analysis revealed that Proteobacteria was the dominant phylum in the microbial fuel cell (MFC) during the decomposition process of organic pollutants. Five culturable bacteria strains - namely, Bacillus subtilis, Flavobacterium sp., Aeromonas hydrophila, Citrobacter freundii, and Stenotrophomonas sp. - have a double potential in dye removal and electricity generation. We inoculated the mixed electrogenic bacteria at a specific ratio and treated them with a triphenylmethane dye, Victoria blue R (VBR), to evaluate their electricity generation ability for the artificial and real wastewater...
October 16, 2017: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
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