journal
MENU ▼
Read by QxMD icon Read
search

Journal of Hazardous Materials

journal
https://www.readbyqxmd.com/read/29778026/impacts-of-initial-temperature-and-cylindrical-obstacles-on-the-dispersing-flammable-limits-of-accidental-methane-releases-in-an-lng-bunkering-terminal
#1
Byung Chul Choi, Kweon-Ha Park, Deog-Hee Doh
This paper presents a numerical study on the dispersing flammable limits with respect to the initial methane releases at TCH4,0  = -50 and -150 °C in the crosswind of ambient air according to the arrangement of (a) No Tank, (b) Tank I, (c) Tank II, and (d) Tank I and II on the ground. To provide a better physical insight on the dispersion behaviors of the methane releases, the spatial distributions of the quasi-averaged methane concentration and flow fields were mainly analyzed using 3-D large eddy simulations...
May 16, 2018: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/29784240/role-of-reactive-oxygen-species-on-the-activity-of-noble-metal-doped-tio-2-photocatalysts
#2
Paula Ribao, Juan Corredor, Maria J Rivero, Inmaculada Ortiz
Modified TiO2 catalysts are of interest in environmental water remediation since they can lead to efficient electron-hole separation and greatly enhance the photocatalytic properties of TiO2 . Reactive oxygen species (ROS), such as the superoxide radical (O2 - ), hydroxyl radical (OH), and positive valence band holes (h+ VB ), have been reported as the main oxidative species involved in photocatalytic degradation processes. In this work, the role of these species using TiO2 , TiO2 /Pt 0.5 wt%, and TiO2 /Ag 10 wt% has been examined in order to clarify the oxidation pathways...
May 15, 2018: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/29776703/removal-of-aqueous-chromium-and-environmental-co-2-by-using-photocatalytic-tio-2-doped-with-tungsten
#3
M Trejo-Valdez, S R Hernández-Guzmán, M E Manriquez-Ramírez, H Sobral, H Martínez-Gutiérrez, C Torres-Torres
Removal of hexavalent chromium was accomplished by using photocatalyst materials of TiO2 doped with tungsten oxide, environmental air as oxygen supply and white light as irradiation source. Dichromate anions in concentration ranges of 50 to 1000 μg/L were removed by means of aqueous dispersions of TiO2 doped with tungsten. The aqueous chromium analyses were performed by Differential Pulse Voltammetry technique. Additionally, mineralization of CO2 gas was promoted by the photocatalysis process, as was clearly shown by Raman spectroscopy and X-ray Photoelectron Spectroscopy (XPS) analyses obtained from the TiO2 samples recovered after photocatalytic experiments...
May 15, 2018: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/29775883/hydrolysis-and-recycling-of-urea-formaldehyde-resin-residues
#4
Ming Liu, Yan Wang, Yiqiang Wu, Hui Wan
Urea formaldehyde (UF) resin residues generate many poisonous chemicals during traditional disposal technologies for organic hazardous wastes. In this study, hydrothermal hydrolysis was developed to decompose, remove, and recycle cured UF resin. Under 140 °C and 2 h of hydrothermal process, 20 mL of either 2 M HCl or 30 w.t. % of formaldehyde solutions can decompose as much as 1.7 g of cured UF resin. In addition, from the attenuated total reflection Fourier-transform infrared spectroscopy (ATR-FTIR), gas chromatography-mass spectroscopy (GCMS), X-ray diffraction (XRD), and 1 H nuclear magnetic resonance (NMR) analyses, it confirmed that the hydrothermal hydrolysis could hydrolyze cured UF resin...
May 15, 2018: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/29775882/rapid-highly-efficient-and-stable-catalytic-hydrodechlorination-of-chlorophenols-over-novel-pd-cnts-ni-foam-composite-catalyst-in-continuous-flow
#5
Jun Xiong, Ying Ma, Wei Yang, Linshan Zhong
A novel Pd/CNTs-Ni foam composite catalyst was developed for catalytic hydrodechlorination of chlorophenols by using CNTs-Ni foam as support. Characterizations including FESEM, TEM/HRTEM, HAADF-STEM and element mapping revel that the composite catalyst with 2 wt.% Pd loading possesses high porous micro-network structure and high dispersed active Pd nanoparticles (5.81 nm) on CNTs surface. The HDC of chlorophenols over Pd/CNTs-Ni foam composite catalyst has been studied in continuous-flow packed bed reactor...
May 15, 2018: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/29775879/catalytic-degradation-of-organophosphorous-nerve-agent-simulants-by-polymer-beads-graphene-oxide-with-organophosphorus-hydrolase-like-activity-based-on-rational-design-of-functional-bimetallic-nuclear-ligand
#6
Xuejuan Ma, Lin Zhang, Mengfan Xia, Xiaohong Zhang, Yaodong Zhang
The degradation of organophosphorous nerve agents is of primary concern due to the severe toxicity of these agents. Based on the active center of organophosphorus hydrolase (OPH), a bimetallic nuclear ligand, (5-vinyl-1,3-phenylene)bis(di(1H-imidazol-2-yl) methanol) (VPIM), was designed and synthesized, which contains four imidazole groups to mimic the four histidines at OPH active center. By grafting VPIM on graphene oxide (GO) surface via polymerization, the VPIM-polymer beads@GO was produced. The obtained OPH mimics has an impressive activity in dephosphorylation reactions (turnover frequency (TOF) towards paraoxon: 2...
May 15, 2018: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/29783155/construction-of-hierarchically-porous-monoliths-from-covalent-organic-frameworks-cofs-and-their-application-for-bisphenol-a-removal
#7
Zhongshan Liu, Hongwei Wang, Junjie Ou, Lianfang Chen, Mingliang Ye
Subject to synthetic conditions, covalent organic frameworks (COFs) are usually in powder form. Herein, taking an azine-linked COF as an example, detailed characterizations indicated that accessible aldehyde groups and hydrazine groups (CNNH2 , 88 μmol g-1 ) concurrently existed on its surface. Intrigued by such feature, we have developed an approach based on ring-opening polymerization to shape COF powder into monoliths. The crystallinity and micropore of COF in monoliths were well remained, meanwhile, the ring-opening polymerization remarkably generated macropores ranging from 0...
May 11, 2018: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/29778028/functional-lignocellulosic-material-for-the-remediation-of-copper-ii-ions-from-water-towards-the-design-of-a-wood-filter
#8
Selin Vitas, Tobias Keplinger, Nico Reichholf, Renato Figi, Etienne Cabane
In this study, the chemical modification of bulk beech wood is described along with its utilization as biosorbent for the remediation of copper from water. The material was prepared by esterification using anhydrides, and reaction conditions were optimized to propose a greener process, in particular by reducing the amount of solvent. This modification yields a lignocellulosic material whose native structure is preserved, with an increased amount of carboxylic groups (up to 3 mmol/g). We demonstrate that the material can remove up to 95% of copper from low concentration solutions (100- 500 ppm)...
May 9, 2018: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/29775880/photocatalytic-reductive-dechlorination-of-2-chlorodibenzo-p-dioxin-by-pd-modified-g-c-3-n-4-photocatalysts-under-uv-vis-irradiation-efficacy-kinetics-and-mechanism
#9
Jiafeng Ding, Gaoyuan Long, Yang Luo, Runze Sun, Mengxia Chen, Yajun Li, Yanfang Zhou, Xinhua Xu, Weirong Zhao
Polychlorinated dibenzo-p-dioxins (PCDDs), as a group of notorious anthropogenic environmental toxicants, are arguably ubiquitous in nature. In this study, we investigated the photocatalytic reductive dechlorination of 2-chlorodibenzo-p-dioxin (2-CDD) over Pd/g-C3 N4 catalysts under UV-vis irradiation. The g-C3 N4 and a series of Pd/g-C3 N4 catalysts were prepared by thermal polymerization and mechanical mixing-illumination method and characterized by XRD, TEM, BET, SEM and UV-vis DRS analyses. Among all the samples, the Pd/g-C3 N4 (5 wt%) yielded the optimal dechlorination activity with a total 2-CDD conversion of 54% within 4 h, and 76% of those converted 2-CDD were evolved to dibenzo-p-dioxin (DD)...
May 9, 2018: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/29772376/understanding-re-distribution-of-road-deposited-particle-bound-pollutants-using-a-bayesian-network-bn-approach
#10
An Liu, Buddhi Wijesiri, Nian Hong, Panfeng Zhu, Prasanna Egodawatta, Ashantha Goonetilleke
Road deposited pollutants (build-up) are continuously re-distributed by external factors such as traffic and wind turbulence, influencing stormwater runoff quality. However, current stormwater quality modelling approaches do not account for the re-distribution of pollutants. This undermines the accuracy of stormwater quality predictions, constraining the design of effective stormwater treatment measures. This study, using over 1000 data points, developed a Bayesian Network modelling approach to investigate the re-distribution of pollutant build-up on urban road surfaces...
May 8, 2018: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/29758456/gper-hippo-yap-signal-is-involved-in-bisphenol-s-induced-migration-of-triple-negative-breast-cancer-tnbc-cells
#11
Qianqian Deng, Guanmin Jiang, Yingmin Wu, Jiexin Li, Weiting Liang, Likun Chen, Qiao Su, Wuguo Li, Jun Du, Chris K C Wong, Zhuojia Chen, Hongsheng Wang
Nowadays, risk factors of triple-negative breast cancer (TNBC) metastasis are not well identified. Our present study reveals that an industrial chemical, bisphenol S (BPS), can promote the migration, but not the proliferation, of TNBC cells in vitro. BPS activates YAP, a key effector of Hippo pathway, by inhibiting its phosphorylation, which promotes YAP nuclear accumulation and up-regulates its downstream genes such as CTGF and ANKRD1. Inhibition of YAP blocks the BPS-triggered cell migration and up-regulation of fibronectin (FN) and vimentin (Vim)...
May 8, 2018: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/29752058/corrigendum-to-kinetics-and-microbial-ecology-of-batch-sulfidogenic-bioreactors-for-co-treatment-of-municipal-wastewater-and-acid-mine-drainage-j-hazard-mater-2016-10-1016-j-jhazmat-2015-11-041
#12
Dongyang Deng, Jennifer L Weidhaas, Lian-Shin Lin
No abstract text is available yet for this article.
May 8, 2018: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/29778027/influence-of-gastrointestinal-tract-on-metabolism-of-bisphenol-a-as-determined-by-in-vitro-simulated-system
#13
Yonghua Wang, Min Rui, Yang Nie, Guanghua Lu
Oral exposure is a major route of human bisphenol A (BPA) exposure. However, influence of gastrointestinal tract on BPA metabolism is unavailable. In this study, in vitro simulator of the human intestinal microbial ecosystem (SHIME) was applied to investigate the changes in bioaccessibility and metabolism of BPA in different parts of gastrointestinal tract (stomach, small intestine and colon). Then the human hepatoma cell line HepG2 was employed to compare toxic effects of BPA itself and effluents of SHIME system on hepatic gene expression profiles...
May 7, 2018: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/29759594/liquid-chromatography-mass-spectrometry-based-metabolomics-and-lipidomics-reveal-toxicological-mechanisms-of-bisphenol-f-in-breast-cancer-xenografts
#14
Chao Zhao, Peisi Xie, Hailin Wang, Zongwei Cai
Bisphenol F (BPF) is a major alternative to bisphenol (BPA) and has been widely used. Although BPA exposure is known to generate various toxic effects, toxicity of BPF remains under-explored. A comprehensive method involving mass spectrometry (MS)-based global lipidomics and metabolomics, and matrix-assisted laser desorption/ionization-mass spectrometry (MALDI)- MS imaging (MSI) was used to study toxic effects of BPF and the underlying mechanisms on tumor metastasis-related tissues (liver and kidney) in breast cancer xenografts...
May 5, 2018: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/29758505/functional-exploration-of-extracellular-polymeric-substances-eps-in-the-bioleaching-of-obsolete-electric-vehicle-lini-x-co-y-mn1-x-y-o-2-li-ion-batteries
#15
Jia Wang, Bingyang Tian, Yihui Bao, Can Qian, Yiran Yang, Tianqi Niu, Baoping Xin
As a fairly new concept, the recovery of valuable metals from urban mining by using bioleaching has become a hotspot. However, the function of extracellular polymeric substances (EPS) in the bioleaching of urban mining gains little attention. The current study used spent EV LIBs to represent urban mining products and systematically explored the function and role of EPS in the attachment of cells to the cathodes, formation of aggregates (cell-EPS-cathode), variation in the electrical and surface properties of the aggregates, concentration of both Fe2+ and Fe3+ surrounding the aggregates, electron transfer inside the aggregates and metals released from the aggregates...
May 5, 2018: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/29754041/sequential-anaerobic-aerobic-treatment-using-plant-microbe-integrated-system-for-degradation-of-azo-dyes-and-their-aromatic-amines-by-products
#16
Mohanapriya Jayapal, Hema Jagadeesan, Manojkumar Shanmugam, Perinba Danisha J, Shobana Murugesan
The presence of unused dyes and dye degradation intermediates in the textile industry wastewaters is the major challenge in its treatment. A wide range of treatments including various physicochemical processes are used for this wastewater. Incomplete dye degradation results in hazardous colorless aromatic amine intermediates that are teratogenic in nature. A synergistic plant-microbe system operated in a sequential anaerobic-aerobic mode was evaluated for the complete degradation of a model azo dye methyl red under laboratory conditions...
May 4, 2018: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/29763796/raw-hematite-based-fe-iii-bio-reduction-process-for-humified-landfill-leachate-treatment
#17
Rui Li, Yu Jiang, Beidou Xi, Mingxiao Li, Xiaoguang Meng, Chuanping Feng, Xuhui Mao, Hongliang Liu, Yonghai Jiang
Microorganisms from paddy soils and raw hematite are used for enhancing natural Fe(III) bio-reduction, in order to remove macromolecular organic pollutants from humified landfill leachate. Based on batch experiments, 60% of refractory organics can be adsorbed by hematite in 12 days. In the presence of Fe(III)-reducing bacteria, 489.60 ± 0.14 mg L-1 of dissolved organic matters can be degraded to 51.90 ± 3.96 mg L-1 within 50 days; twelve types of semi volatile organic compounds can be degraded; hereby, the reaction follows a first-order kinetics...
May 3, 2018: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/29751175/phosphonate-and-carboxylic-acid-co-functionalized-mos-2-sheets-for-efficient-sorption-of-uranium-and-europium-multiple-groups-for-broad-spectrum-adsorption
#18
Sen Yang, Mengxia Hua, Liang Shen, Xiaoli Han, Meiyun Xu, Liangju Kuang, Daoben Hua
It is significant to develop novel materials and techniques for efficient removal of radionuclides from radioactive wastes due to the radioactive and chemical toxicity. In this paper, we report a strategy for broad-spectrum adsorption of radionuclides by multiple groups-decorated adsorbents. Specifically, the adsorbents were prepared by grafting diethyl-(4-vinylbenzyl) phosphonate and maleic anhydride copolymers onto molybdenum disulfide sheets for the sorption of uranium(VI) and europium(III). The sorption efficiencies exhibited a dependency on pH, contact time and initial concentrations...
May 3, 2018: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/29751174/removal-of-alachlor-diuron-and-isoproturon-in-water-in-a-falling-film-dielectric-barrier-discharge-dbd-reactor-combined-with-adsorption-on-activated-carbon-textile-reaction-mechanisms-and-oxidation-by-products
#19
Patrick Vanraes, Niels Wardenier, Pieter Surmont, Frederic Lynen, Anton Nikiforov, Stijn W H Van Hulle, Christophe Leys, Annemie Bogaerts
A falling film dielectric barrier discharge (DBD) plasma reactor combined with adsorption on activated carbon textile material was optimized to minimize the formation of hazardous oxidation by-products from the treatment of persistent pesticides (alachlor, diuron and isoproturon) in water. The formation of by-products and the reaction mechanism was investigated by HPLC-TOF-MS. The maximum concentration of each by-product was at least two orders of magnitude below the initial pesticide concentration, during the first 10 min of treatment...
May 3, 2018: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/29751172/a-modified-receptor-model-for-source-apportionment-of-heavy-metal-pollution-in-soil
#20
Ying Huang, Meihua Deng, Shaofu Wu, Jan Japenga, Tingqiang Li, Xiaoe Yang, Zhenli He
Source apportionment is a crucial step toward reduction of heavy metal pollution in soil. Existing methods are generally based on receptor models. However, overestimation or underestimation occurs when they are applied to heavy metal source apportionment in soil. Therefore, a modified model (PCA-MLRD) was developed, which is based on principal component analysis (PCA) and multiple linear regression with distance (MLRD). This model was applied to a case study conducted in a peri-urban area in southeast China where soils were contaminated by arsenic (As), cadmium (Cd), mercury (Hg) and lead (Pb)...
May 3, 2018: Journal of Hazardous Materials
journal
journal
31636
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"