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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/29775422/fate-of-four-phthalate-plasticizers-under-various-wastewater-treatment-processes
#1
Dana L Armstrong, Clifford P Rice, Mark Ramirez, Alba Torrents
The fate of four phthalate plasticizers during wastewater treatment processes at six different wastewater treatment plants (WWTPs) was investigated. Concentrations of benzyl butyl phthalate (BBP), di(2-ethylhexyl) phthalate (DEHP), diisononyl phthalate (DiNP), and diisodecyl phthalate (DiDP) were determined prior to either aerobic or anaerobic (conventional and advanced) treatment, after treatment, and in final, dewatered solids. Despite their elevated use worldwide, the fate of DiNP and DiDP during wastewater treatment have not been well characterized...
May 18, 2018: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/29775400/evaluating-the-cytotoxicity-of-tin-dioxide-nanofibers
#2
Ashley S Reynolds, Tanya H Pierre, Rebecca McCall, Ji Wu, Worlanyo E Gato
Tin dioxide nanofibers (SnDNFs) are small fibers that have many applications. Tin dioxide nanofibers can be used in cosmetics, solar cells, toxic gas release sensors, and air pollution control. To date there have been few studies on the cytotoxicity of SnDNFs. The goal of this research is to determine if electrospun SnDNFs are toxic in a lung cancer cell line (A549). Considering the nano-scale size of the fibers, they can easily be inhaled and enter the pulmonary system and cause toxic effects in the lung. Occupational exposure to SnDNFs has been linked to pulmonary disease, making the A549 cell line important in this study...
May 18, 2018: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/29775398/utilization-of-waste-tyres-pyrolysis-oil-vapour-in-the-synthesis-of-zeolite-templated-carbons-ztcs-for-hydrogen-storage-application
#3
Nicholas M Musyoka, Khavharendwe M Rambau, Ncholu Manyala, Jianwei Ren, Henrietta W Langmi, Mkhulu K Mathe
In this study, we investigated the potential for use of waste tyre pyrolysis oil vapour as a carbon precursor in the synthesis of zeolite templated carbons (ZTC). With Zeolite 13X as the template, the ZTCs were synthesised using two methods namely: 1-step process which involved the carbonization of gaseous carbon precursor in the zeolite template (in this case, ethylene and pyrolysis oil vapour) and the 2-step synthesis method involved the impregnation of zeolite pores with furfural alcohol prior to carbonization of the gaseous carbon precursor...
May 18, 2018: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/29775396/the-importance-of-substrate-compaction-and-chemical-composition-in-the-phytoextraction-of-elements-by-pinus-sylvestris-l
#4
Mirosław Mleczek, Piotr Goliński, Bogusława Waliszewska, Andrzej Mocek, Monika Gąsecka, Magdalena Zborowska, Zuzanna Magdziak, Wojciech J Cichy, Bartłomiej Mazela, Tomisław Kozubik, Agnieszka Mocek-Płóciniak, Waldemar Moliński, Przemysław Niedzielski
Trees of Scots pine (Pinus sylvestris L.) are known for their effective phytoextraction capabilities. The results obtained in this study point to the significant role of substrate composition and chemical characteristics in the phytoextraction potential of this species. A multi-elemental (53 elements) analysis of pines from unpolluted (soil) and polluted (post-flotation tailings) sites was performed using inductively coupled plasma optical emission spectrometry. The analyzed flotation tailings were characterized by alkaline pH (7...
May 18, 2018: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/29775394/degradation-of-ticarcillin-by-subcritial-water-oxidation-method-application-of-response-surface-methodology-and-artificial-neural-network-modeling
#5
Erdal Yabalak
This study was performed to investigate the mineralization of ticarcillin in the artificially prepared aqueous solution presenting ticarcillin contaminated waters, which constitute a serious problem for human health. 81.99% of total organic carbon removal, 79.65% of chemical oxygen demand removal, and 94.35% of ticarcillin removal were achieved by using eco-friendly, time-saving, powerful and easy-applying, subcritical water oxidation method in the presence of a safe-to-use oxidizing agent, hydrogen peroxide...
May 18, 2018: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/29775126/efforts-to-remove-aqueous-lithium-ion-using-octolig%C3%A2-and-methylated-derivatives
#6
Dean F Martin, Kirpal S Bisht
Aqueous Li+ - containing samples (in DI water or well water) were eluted over Octolig®, a polyethylenediimine covalently attached to a high- surface-area silica gel, and only slight removal, if any, could be claimed. However, when using tetrahydrofuran (THF) as a solvent we quantitatively removed lithium ion with Octolig® or with alkylated Octolig®, demonstrating the efficacy of Octolig® and lack of advantage of a N, N'-dialkylated Octolig®. In addition, the removal of alkali metal ions (lithium, sodium, and potassium) in THF by Octolig® was partially selective: While being quantitative for lithium it was only about 40% for potassium...
May 18, 2018: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/29775125/influence-of-tetramethylammonium-hydroxide-tmah-on-the-microbial-properties-of-anaerobic-granular-sludge-acclimated-to-isoplophyl-alcohol-ipa-wastewater-under-psychrophilic-conditions
#7
Tsuyoshi Danshita, Yuma Miyaoka, Norihisa Matsuura, Haruhiko Sumino, Takashi Yamaguchi, Kazuaki Syutsubo
In this study, a continuous flow experiment was conducted in which a lab-scale upflow anaerobic sludge blanket (UASB) reactor at psychrophilic conditions (18-19°C) was fed with artificial wastewater, containing tetramethylammonium hydroxide (TMAH) and isoplophyl alcohol (IPA), from the electronics industry. This was done to evaluate process performance and microbial properties of the granular sludge that was retained in the reactor. The inoculated granular sludge was precultured with IPA containing wastewater but not TMAH; as a result, no degradation was observed in 30 days of operation...
May 18, 2018: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/29775124/metal-leaching-from-refinery-waste-hydroprocessing-catalyst
#8
Meena Marafi, Mohan S Rana
The present study aims to develop an eco-friendly methodology for the recovery of nickel (Ni), molybdenum (Mo), and vanadium (V) from the refinery waste spent hydroprocessing catalyst. The proposed process has two stages: the first stage is to separate alumina, while the second stage involves the separation of metal compounds. The effectiveness of leaching agents, such as NH4 OH, (NH4 )2 CO3 , and (NH4 )2 S2 O8 , for the extraction of Mo, V, Ni, and Al from the refinery spent catalyst has been reported as a function of reagent concentration (0...
May 18, 2018: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/29764288/occurrence-of-parent-and-substituted-polycyclic-aromatic-hydrocarbons-in-typical-wastewater-treatment-plants-and-effluent-receiving-rivers-of-beijing-and-risk-assessment
#9
Wei Cao, Meng Qiao, Bochuan Liu, Xu Zhao
Sixteen polycyclic aromatic hydrocarbons (PAHs) and some typical substituted polycyclic aromatic hydrocarbons (SPAHs) were investigated in wastewater treatment plants (WWTPs) and effluent effluent-receiving rivers in order to indentify the elimination of these compounds in WWTPs, as well as the potantial potential risk in the effluent-receiving rivers. The concentrations of ΣPAHs in the total phase (combined dissolved and adsorbed phases) in influent were between 944.1 and 1246.5 ng·L-1 , and ΣSPAHs, including methyl PAHs (MPAHs) and oxygenated PAHs (OPAHs), between 684...
May 15, 2018: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/29764286/environmental-evaluation-of-flocculation-efficiency-in-the-separation-of-the-microalgal-biomass-of-scenedesmus-sp-cultivated-in-full-scale-photobioreactors
#10
Marisa D Scherer, Fernando J C Magalhães Filho, Amanda C Oliveira, Nelson F H Selesu, Cássia M L Ugaya, André B Mariano, José V C Vargas
In this paper the environmental evaluation of the separation process of the microalgal biomass Scenedesmus sp. from full-scale photobioreactors was carried out at the Research and Development Nucleus for Sustainable Energy (NPDEAS), with different flocculants (iron sulfate - FeCl3 , sodium hydroxide - NaOH, calcium hydroxide - Ca(OH)2 and aluminum sulphate Al2 (SO4 )3 , by means of the life cycle assessment (LCA) methodology, using the SimaPro 7.3 software. Furthermore, the flocculation efficiency by means of optical density (OD) was also evaluated...
May 15, 2018: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/29746791/preferential-accumulation-of-inorganic-elements-in-amanita-muscaria-from-north-eastern-poland
#11
Krzysztof Lipka, Martyna Saba, Jerzy Falandysz
Concentrations of Al, Ba, Cd, Ca, Co, Cu, Fe, K, Mg, Mn, Hg, Rb, Ag, Na, Sr and Zn were analysed in fruiting bodies of A. muscaria. This mushroom is considered conditionally edible, since parboiling can detoxify its fruiting bodies from the hallucinogens and render it edible. The specific purpose of the research is the little-known phenomenon of the variability of mineral composition of mushrooms for generations harvested in the same forest areas - both in terms of their nutritional value and anthropogenic influences...
May 10, 2018: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/29719162/molecular-and-eco-physiological-characterization-of-arsenic-as-transforming-achromobacter-sp-kas-3-5-t-from-as-contaminated-groundwater-of-west-bengal-india
#12
Balaram Mohapatra, Tulasi Satyanarayana, Pinaki Sar
Molecular and eco-physiological characterization of arsenic (As)-transforming and hydrocarbon-utilizing Achromobacter type strain KAs 3-5T has been investigated in order to gain an insight into As-geomicrobiology in the contaminated groundwater. The bacterium is isolated from As-rich groundwater of West Bengal, India. Comparative 16S rRNA gene sequence phylogenetic analysis confirmed that the strain KAs 3-5T is closely related to Achromobacter mucicolens LMG 26685T (99.17%) and Achromobacter animicus LMG 26690T (99...
May 2, 2018: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/29708842/toxicity-assessment-of-untreated-treated-electroplating-sludge-using-human-and-plant-bioassay
#13
Visnja Orescanin, Ksenija Durgo, Ivanka Lovrencic Mikelic, Ivan Halkijevic, Marin Kuspilic
The purpose of this work was to assess the risk to the environment arising from the electroplating sludge from both chemical and toxicological point of view. Both approaches were used for the assessment of the treatment efficiency which consisted of CaO based solidification followed by thermal treatment at 400°C. The elemental composition was determined in the bulk samples and the leachates of untreated sludge. The toxicity of the leachate was determined using two human colorectal adenocarcinoma cell lines (Caco-2 and SW 480) and Hordeum vulgare L...
April 30, 2018: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/29708839/the-effect-of-two-bromfenvinphos-impurities-bdcee-and-%C3%AE-ketophosphonate-on-oxidative-stress-induction-acetylcholinesterase-activity-and-viability-of-human-red-blood-cells
#14
Bożena Bukowska, Bogumiła Huras, Monika Jarosiewicz, Jolanta Witaszewska, Marta Słowińska, Katarzyna Mokra, Jerzy Zakrzewski, Jaromir Michałowicz
Numerous research works have shown that synthesis of pesticides leads to the formation of impurities that may substantially enhance pesticide toxicity. In this study, the effect of manufacturing impurities of pesticide bromfenvinphos (BFVF) such as 1-bromo-2-(2,4-dichlorophenyl)-2-ethoxy ethene (BDCEE) and diethyl [2-(2,4-dichlorophenyl)-2-oxo-ethyl] phosphonate (β-ketophosphonate) on human erythrocytes, being significantly exposed to xenobiotics has been studied. The cells were treated with the compounds studied in the concentrations ranging from 0...
April 30, 2018: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/29708831/pre-digestion-to-enhance-volatile-fatty-acids-vfas-concentration-as-a-carbon-source-for-denitrification-in-treatment-of-liquid-swine-manure
#15
Sarah Xiao Wu, Lide Chen, Jun Zhu, McKenzie Walquist, David Christian
Insufficient denitrification in biological treatment is often a result of the lack of a carbon source. In this study, use of the volatile fatty acids (VFAs) generated via pre-digestion as a carbon source to improve denitrification in sequencing batch reactor (SBR) treatment of liquid swine manure was investigated. The pre-digestion of swine manure was realized by storing the manure in a sealed container in room temperature and samples were taken periodically from the container to determine the VFA levels. The results showed that after 14 days of pre-digestion, the VFA level in the digested liquid was increased by 200%...
April 30, 2018: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/29708823/levels-of-potentially-toxic-metals-in-water-sediment-and-peat-from-wonderfonteinspruit-north-west-province-south-africa
#16
Ntumba C Nsaka, Robert I McCrindle, Abayneh A Ambushe
Environmental monitoring of the levels of potentially toxic metals is of importance because of possible adverse effects on living species. This study was conducted to assess the levels of Cd, Cr, Cu, Hg, Mn, Pb, U and V in water, sediment and peat samples collected from the region of Wonderfonteinspruit. Water samples were simply filtered and acidified with HNO3 prior to analysis. Sediment and peat were oven-dried, ground, sieved and mineralised using a microwave digestion system. Concentrations of the selected elements in all samples were determined by inductively coupled plasma-mass spectrometry...
April 30, 2018: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/29672214/use-of-artificial-neuronal-networks-for-prediction-of-the-control-parameters-in-the-process-of-anaerobic-digestion-with-thermal-pretreatment
#17
Rita Flores-Asis, Juan M Méndez-Contreras, Ulises Juárez-Martínez, Alejandro Alvarado-Lassman, Daniel Villanueva-Vásquez, Alberto A Aguilar-Lasserre
This article focuses on the analysis of the behavior patterns of the variables involved in the anaerobic digestion process. The objective is to predict the impact factor and the behavior pattern of the variables, i.e., temperature, pH, volatile solids (VS), total solids, volumetric load, and hydraulic residence time, considering that these are the control variables for the conservation of the different groups of anaerobic microorganisms. To conduct the research, samples of physicochemical sludge were taken from a water treatment plant in a poultry processing factory, and, then, the substrate was characterized, and a thermal pretreatment was used to accelerate the hydrolysis process...
April 19, 2018: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/29672207/oxidation-of-propyl-paraben-by-ferrate-vi-kinetics-products-and-toxicity-assessment
#18
Jibin An, Chunqiu Xia, Jiahong He, Huixia Feng
Propyl paraben (propyl 4-hydroxybenzoate, PPB), one of the typically used paraben species in various pharmaceutical and personal care products, has been found in different aquatic environment, which could affect the water quality and human health. In this paper, the degradation of PPB by aqueous ferrate (Fe(VI)) was investigated in different water matrix and reaction kinetics as a function of pH was determined. Intermediate products of the degradation process were isolated and characterized by the high performance liquid chromatography/mass spectrometry/mass spectrometry techniques...
April 19, 2018: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/29652222/novel-carbonized-bone-meal-for-defluoridation-of-groundwater-batch-and-column-study
#19
Somak Chatterjee, Sanjay Jha, Sirshendu De
Low cost naturally available bone meal was carbonized and its fluoride adsorption capacity was explored. Carbonized bone meal (CBM) produced at 550°C, 4 h carbonization time and a heating rate of 60°C/min, showed fluoride adsorption capacity of 14 mg g-1 . Adsorbent was characterized using scanning electron microscopy, X-ray diffraction, X-ray fluoroscence, thermogravimetric analysis and Fourier transform infrared spectroscopy to highlight its physical and chemical properties. Best fluoride uptake capacity was observed for 0...
April 13, 2018: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/29652205/environmental-impact-of-biogas-a-short-review-of-current-knowledge
#20
Valerio Paolini, Francesco Petracchini, Marco Segreto, Laura Tomassetti, Nour Naja, Angelo Cecinato
The social acceptance of biogas is often hampered by environmental and health concerns. In this study, the current knowledge about the impact of biogas technology is presented and discussed. The survey reports the emission rate estimates of the main greenhouse gases (GHG), namely CO2 , CH4 and N2 O, according to several case studies conducted over the world. Direct emissions of gaseous pollutants are then discussed, with a focus on nitrogen oxides (NOx ); evidences of the importance of suitable biomass and digestate storages are also reported...
April 13, 2018: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
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