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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/28609223/the-influence-of-multiple-chemical-and-non-chemical-stressors-on-benthic-communities-in-a-mid-west-agricultural-stream
#1
Lenwood W Hall, Willian D Killen, Ronald D Anderson, Raymond W Alden
The objective of this 3-year study was to characterize benthic communities and physical habitat in an agricultural stream in the mid-west area of the United States (Big Bureau Creek, Illinois). Concurrent basic water quality parameters and seven nutrients were measured in the water column. Sediment measurements from depositional areas were conducted for bifenthrin, Total Organic Carbon, grain size, polychlorinated biphenyls (PCBs) and eight metals. All parameters were measured at 12 sites annually during the late summer for a 3-year period (2014, 2015 and 2016)...
June 13, 2017: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/28598770/review-of-the-ecotoxicological-effects-of-emerging-contaminants-on-soil-biota
#2
Ana R Gomes, Celine Justino, Teresa Rocha-Santos, Ana C Freitas, Armando C Duarte, Ruth Pereira
In recent years, emerging contaminants (e.g. pesticides and their metabolites, pharmaceuticals, personal and house care products, life-style compounds, food additives, industrial products and wastes, as well as nanomaterials) have become a problem to the environment. In fact, the cumulative use of a panoply of chemical substances in agriculture, industrial activities, in our homes and in health care services has led to their recent appearance in detectable levels in soils, surface, and groundwater resources, with unpredictable consequences for these ecosystems...
June 9, 2017: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/28598716/evaluation-and-application-of-a-passive-air-sampler-for-polycylic-aromatic-hydrocarbons-pahs
#3
Fatma Esen, Yildiz M Evci, Yucel Tasdemir
Sampling of 15 PAHs by the use of both passive air sampler developed (D-PAS) in our research group and PAS (C-PAS) having widespread use in the literature was conducted to compare the performances of the samplers. Sampling was carried out for 1-year period (February 2013-February 2014), in different sampling periods by employing D-PAS and C-PAS. D-PAS and C-PAS were run in parallel for 10, 20, 30, 40 and 60 days. Sampling rates were calculated for both PASs by the use of concentration values obtained from a high-volume air sampler (HVAS)...
June 9, 2017: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/28575584/variability-in-inorganic-as-sb-and-tl-species-concentrations-in-waters-and-bottom-sediments-of-the-k%C3%A5-odnica-river-poland
#4
Rajmund Michalski, Sebastian Szopa
The study describes the application of new methodologies for the simultaneous determination of As(III)/As(V), Sb(III)/Sb(V) and Tl(I)/Tl(III) ions in waters and bottom sediments of the Kłodnica River (Poland) with the hyphenated technique of high-performance liquid chromatography-inductively coupled plasma-mass spectrometry (HPLC-ICP-MS) . Time and spatial correlations were determined in the changes of total and speciation concentrations of the above-mentioned analytes in Kłodnica river in 2012. The developed methodologies demonstrate high selectivity and limits of quantification at the level of 0...
June 2, 2017: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/28575580/evaluation-of-the-process-performance-of-a-down-flow-hanging-sponge-reactor-for-direct-treatment-of-domestic-wastewater-in-bangkok-thailand
#5
Yuma Miyaoka, Wilasinee Yoochatchaval, Haruhiko Sumino, Pathan Banjongproo, Takashi Yamaguchi, Takashi Onodera, Tomohiro Okadera, Kazuaki Syutsubo
This study assesses the performance of an aerobic trickling filter, down-flow hanging sponge (DHS) reactor, as a decentralized domestic wastewater treatment technology. Also, the characteristic eukaryotic community structure in DHS reactor was investigated. Long-term operation of a DHS reactor for direct treatment of domestic wastewater (COD = 150-170 mg/L and BOD = 60-90 mg/L) was performed under the average ambient temperature ranged from 28°C to 31°C in Bangkok, Thailand. Throughout the evaluation period of 550 days, the DHS reactor at a hydraulic retention time of 3 h showed better performance than the existing oxidation ditch process in the removal of organic carbon (COD removal rate = 80-83% and BOD removal rate = 91%), nitrogen compounds (total nitrogen removal rate = 45-51% and NH4(+)-N removal rate = 95-98%), and low excess sludge production (0...
June 2, 2017: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/28575579/determination-of-statin-drugs-in-hospital-effluent-with-dispersive-liquid-liquid-microextraction-and-quantification-by-liquid-chromatography
#6
Ayrton F Martins, Carla da S Frank, Joseline Altissimo, Júlia A de Oliveira, Daiane S da Silva, Jaqueline F Reichert, Darliana M Souza
Statins are classified as being amongst the most prescribed agents for treating hypercholesterolaemia and preventing vascular diseases. In this study, a rapid and effective liquid chromatography method, assisted by diode array detection, was designed and validated for the simultaneous quantification of atorvastatin (ATO) and simvastatin (SIM) in hospital effluent samples. The solid phase extraction (SPE) of the analytes was optimized regarding sorbent material and pH, and the dispersive liquid-liquid microextraction (DLLME), in terms of pH, ionic strength, type and volume of extractor/dispersor solvents...
June 2, 2017: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/28541809/sequential-adaptation-of-nannochloropsis-gaditana-to-table-olive-processing-water
#7
Antonio Serrano, Carmen Contreras, Gonzalo Ruiz-Filippi, Rafael Borja, Fernando G Fermoso
The main objective of this study was to evaluate the suitability of Nannochloropsis gaditana to grow by sequential adaptation to TOPW (Table olive processing water) at increased substrate concentrations (10-80%). Sequential adaptation allows growing Nannochloropsis gaditana up to 80% TOPW, although the maximum microalgae biomass productions were achieved for percentages of 20-40%, i.e. 0.308 ± 0.005 g VSS (Volatile Suspended Solids)/L. In all growth experiments, proteins were the majority compound in the grown microalgae biomass (0...
May 25, 2017: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/28541794/natural-organic-matter-characterization-by-hpsec-and-its-contribution-to-trihalomethane-formation-in-athens-water-supply-network
#8
Stelios A Samios, Spyros K Golfinopoulos, Przemyslaw Andrzejewski, Joanna Świetlik
Samples from the two main watersheds that provide Athens Water Supply and Sewerage Company (AWSSC) with raw water were examined for Dissolved Organic Carbon (DOC) and for their molecular weight distribution (MWD). In addition, water samples from water treatment plants (WTPs) and from the water supply network were examined for trihalomethane (THMs) levels. The main purpose of this study was to reveal the molecular composition of natural organic matter (NOM) and identify the individual differences between NOM from the two main Athens watersheds...
May 25, 2017: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/28541771/distributions-sources-and-ecological-risk-of-polycyclic-aromatic-hydrocarbons-pahs-in-subsurface-water-of-urban-old-industrial-relocation-areas-a-case-study-in-shenyang-china
#9
Ying-Hua Li, Hai-Bo Li, Xin-Yang Xu, Si-Yao Xiao, Si-Qi Wang
During a 12-month study period, the levels, distributions, sources and ecological risk of 16 polycyclic aromatic hydrocarbons (PAHs) were investigated in subsurface water of Shenyang (the largest urban industrial relocation base in China). The results showed that ΣPAH concentration ranged from 0.21 to 1.07 µg/L, in descending order as follows, summer, autumn, spring and winter. Comparing with the situations before relocation, there was a significant decrease in Fluorene, Phenanthrene and Anthracene levels...
May 25, 2017: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/28494219/oxidative-degradation-of-tetramethylammonium-hydroxide-tmah-by-uv-persulfate-and-associated-acute-toxicity-assessment
#10
Jingting Huang, Kai-Sung Wang, Chenju Liang
Tetramethylammonium hydroxide (TMAH) is widely used in high-tech industries as a developing agent. Ultraviolet (UV) light-activated persulfate (PS, S2O8(2-)) can be used to generate strongly oxidative sulfate radicals, and it also exhibits the potential to treat TMAH-containing wastewater. This study initially investigated the effect of S2O8(2-) concentration and UV strength on the UV/S2O8(2-) process for the degradation of TMAH in a batch reactor. The results suggested that 15 watts (W) of UV-activated S2O8(2-) at concentrations of 10 or 50 mM resulted in pseudo-first-order TMAH degradation rate constants of 3...
May 11, 2017: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/28489975/biodegradation-of-airborne-acetone-styrene-mixtures-in-a-bubble-column-reactor
#11
T Vanek, A Silva, M Halecky, J Paca, I Ruzickova, E Kozliak, K Jones
The ability of a bubble column reactor (BCR) to biodegrade a mixture of styrene and acetone vapors was evaluated to determine the factors limiting the process efficiency, with a particular emphasis on the presence of degradation intermediates and oxygen levels. The results obtained under varied loadings and ratios were matched with the dissolved oxygen levels and kinetics of oxygen mass transfer, which was assessed by determination of kLa coefficients. A 1.5-L laboratory-scale BCR was operated under a constant air flow of 1...
May 10, 2017: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/28489973/selected-aspects-of-the-current-state-of-freshwater-resources-in-the-murmansk-region-russia
#12
Nikolay A Kashulin, Vladimir A Dauvalter, Dmitry B Denisov, Svetlana A Valkova, Oksana I Vandysh, Petr M Terentjev, Alexander N Kashulin
Aspects of reducing the resource potential of surface waters of the Murmansk region in the global climate change and the environment and their irrational use have been considered. Increase of aquatic environment toxicity, drastic restructuring of the structural and functional characteristics of aquatic communities, changes in trophic status of lakes, reducing the stability of freshwater ecosystems, increasing the risk of catastrophic degradation have been shown. Taking into account the regional peculiarities, some indicators of surface water quality in the Murmansk region have been proposed...
May 10, 2017: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/28489972/continuous-bioelectricity-generation-through-treatment-of-victoria-blue-r-a-novel-microbial-fuel-cell-operation
#13
Chih-Yu Chen, Guey-Horng Wang, Teh-Hua Tsai, Wan-Tzu Chen, Ying-Chien Chung
A novel two-chamber microbial fuel cell (MFC) operation with a continuous anaerobic-aerobic decolorization system was developed to improve the degradation of the triphenylmethane dye, Victoria blue R (VBR). In addition, bioelectricity was generated during the VBR degradation process, and the operation parameters were optimized. The results indicated that the VBR removal efficiency and electricity generation were affected by the VBR concentration, liquid retention time (LRT), external resistance, gas retention time (GRT), and shock loading...
May 10, 2017: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/28463586/physical-chemical-modeling-of-elements-behavior-in-mixing-sea-and-fresh-waters-of-minor-rivers-in-the-white-sea-catchment-area
#14
Victoria V Maksimova, Svetlana I Mazukhina, Tatiana A Cherepanova, Tamara T Gorbacheva
The physical-chemical stage of marginal filters in minor rivers of the White Sea catchment area by the example of the Umba River, flowing to Kandalaksha Gulf, has been explored. Application of the method of physical-chemical modeling on the basis of field data allowed establishing migration forms of a number of elements in the "river-sea" system and deposition of solid phases when mixing waters. The mixing of river and sea water is accompanied by the sedimentation of predominantly goethite, hydromuscovite, and hydroxylapatite...
May 2, 2017: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/28463583/decolorization-of-acid-disperse-and-reactive-dyes-by-trametes-versicolor-cbr43
#15
Seung-Ok Yang, Hong Sodaneath, Jung-In Lee, Hyekyeng Jung, Jin-Hee Choi, Hee Wook Ryu, Kyung-Suk Cho
The mycoremediation has been considered as a promising method for decolorizing dye wastewater. To explore new bioresource for mycoremediation, a new white-rot fungus that could decolorize various dyes commonly used in textile industries was isolated, and its ligninolytic enzyme activity and decolorization capacity were characterized. The isolated CBR43 was identified as Trametes versicolor based on the morphological properties of its fruit body and spores, as well as through partial 18S rDNA gene sequences...
May 2, 2017: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/28463567/phylogeny-and-polycyclic-aromatic-hydrocarbons-degradation-potential-of-bacteria-isolated-from-crude-oil-contaminated-site
#16
David Tirado-Torres, Otilio Acevedo-Sandoval, Blanca R Rodríguez-Pastrana, Martha Gayosso-Canales
This study employed the use of 16S rRNA gene sequence analysis to identify three of four native bacterial strains isolated from crude oil-contaminated site in Poza Rica, Veracruz, Mexico. The identified bacteria were Ochrobactrum intermedium, Pandoraea pnomenusa and Ochrobactrum sp., but SA2-09 strain was not identified. The ability of the isolates to degrade polycyclic aromatic hydrocarbons (PAHs) was evaluated at 31.61 and 54.52 mg/kg PAHs in soil, when used as crude oil in soil microcosm during 80 days of incubation at 30°C...
May 2, 2017: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/28463536/effect-of-competitive-adsorption-on-zinc-removal-from-aqueous-solution-and-zinc-smelting-effluent-by-eucalyptus-leaf-based-magnetic-biosorbent
#17
Cheng Chen, Yankui Tang, Yuyang Liu, Yuanzhang Liang, Kaixuan Zhang, Shengye Wang, Yan Liang
The objectives of this study were to investigate the competitive sorption behaviors and mechanisms of heavy metals onto ELMB, a novel eucalyptus-leaf-based magnetic biosorbent, and to study the potential application of ELMB in the treatment of actual zinc smelting effluent after a necessary pretreatment process. ELMB and ELMB-metals systems were characterized using several techniques. Competitive sorption of Zn(2+) with Pb(2+), Cu(2+) and Cd(2+) onto ELMB was studied by batch experiments and the used sorbent was separated under a magnetic field...
May 2, 2017: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/28448788/production-of-biogas-from-co-digestion-of-livestock-and-agricultural-residues-a-case-study
#18
Brahim Arhoun, Cesar Gomez-Lahoz, Roberto Teofilo Abdala-Diaz, Jose Miguel Rodriguez-Maroto, Francisco Garcia-Herruzo, Carlos Vereda-Alonso
This study was undertaken to determine the possible changes in the digester yield and performance for the anaerobic co-digestion under mesophilic conditions of strawberry residues (SRs) together with pig manure (PM). The first part of this paper deals with the digestion of SR as a single substrate. For organic loading rates (OLRs) of 4.4 (g L(-1) d(-1)) or less, the experimental specific biogas and methane productions are 0.588 and 0.231 L g(-1), respectively. When higher OLRs (5.5 g L(-1) d(-1)) are used the digester fails due to acidification...
April 27, 2017: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/28448768/toxicity-identification-and-evaluation-tie-of-a-petroleum-refinery-wastewater
#19
Sarah D A Daflon, Igor L Guerra, Márcia V Reynier, Ana C Cerqueira, Clarice R Botta, Juacyara C Campos
Petroleum refineries generate large amounts of wastewaters, which can have acute/chronic toxicity toward aquatic organisms. Previous studies have shown that many contaminants can be responsible for this toxicity, among them ammonia, sulfide, cyanide, phenols and hydrocarbons. In the study reported herein, the cause of the chronic toxicity of a biotreated petroleum refinery wastewater was investigated by applying the TIE methodology using the microcrustacean Ceriodaphnia dubia. Five samples were analyzed, and the results suggest that copper is the primary toxicant, showing a strong correlation with wastewater toxicity in Phase III...
April 27, 2017: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/28448750/simultaneous-atrazine-degradation-and-e-coli-inactivation-by-simulated-solar-photo-fenton-like-process-using-persulfate
#20
Natalya Garkusheva, Galina Matafonova, Irina Tsenter, Sara Beck, Valeriy Batoev, Karl Linden
This work evaluated the feasibility of a photo-Fenton-like process using persulfate (PS) and ferrous iron (Fe(2+)) under simulated solar radiation for degrading the herbicide atrazine (ATZ, 6-Chloro-N-ethyl-N'-isopropyl-1,3,5-triazine-2,4-diamine) and inactivating E. coli. Milli Q water, lake water, and diluted wastewater effluents were spiked both simultaneously and separately with ATZ (4 mg/L) and E. coli (10(5) CFU/mL), and exposed to treatment. A method for determining the average irradiance throughout the water media in the UV(A+B) range of the Xe lamp emission was developed for bench-scale experiments...
April 27, 2017: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
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