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Journal of Hazardous Materials

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https://www.readbyqxmd.com/read/28531660/carbon-black-aggregates-cause-endothelial-dysfunction-by-activating-rock
#1
Junyan Yan, Chia-Hsiang Lai, Shih-Chun Candice Lung, Wen-Cheng Wang, Chih-Ching Huang, Guan-Wen Chen, Guangli Suo, Cheng-Tai Choug, Chia-Hua Lin
Carbon black nanoparticles (CBNs) have been associated with the progression of atherosclerosis. CBNs normally enter the bloodstream and crosslink together to form agglomerates. However, most studies have used nano-sized CB particles to clarify the involvement of CBN exposure in CBN-induced endothelial dysfunction. Herein, we studied endothelial toxicity of CBN aggregates (CBA) to human EA.hy926 vascular cells. Cell viability, lactate dehydrogenase leakage, and oxidative stress were affected by the highest concentration of CBA...
May 15, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28531658/co-plantation-of-aquatic-macrophytes-typha-angustifolia-and-paspalum-scrobiculatum-for-effective-treatment-of-textile-industry-effluent
#2
Vishal V Chandanshive, Niraj R Rane, Asif S Tamboli, Avinash R Gholave, Rahul V Khandare, Sanjay P Govindwar
Field treatment of textile industry effluent was carried out in constructed drenches (91.4m×1.2m×0.6m; 65.8m(3)) planted independently with Typha angustifolia, Paspalum scrobiculatum and their co-plantation (consortium-TP). The in situ treatment of effluent by T. angustifolia, P. scrobiculatum and consortium-TP was found to decrease ADMI color value by 62, 59 and 76%, COD by 65, 63 and 70%, BOD by 68, 63 and 75%, TDS by 45, 39 and 57%, and TSS by 35, 31 and 47%, respectively within 96h. Heavy metals such as arsenic, cadmium, chromium and lead were also removed up to 28-77% after phytoremediation...
May 12, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28531662/microencapsulation-of-gulosibacter-molinativorax-on4-t-cells-by-a-spray-drying-process-using-different-biopolymers
#3
Berta N Estevinho, A Rita Lopes, Vera Sousa, Fernando Rocha, Olga C Nunes
Molinate is a thiocarbamate herbicide used in rice crop protection. As other pesticides, molinate is a recognized environmental pollutant and bio-accumulated by some wildlife forms. Gulosibacter molinativorax ON4(T) is able to hydrolyse molinate into metabolites which are further degraded by other un-related bacteria. Hence, it can be used in molinate bioremediation processes. The aim of this work was to investigate the possibility of producing G. molinativorax ON4(T) microparticles, using different non-toxic biopolymers (arabic gum, modified chitosan, calcium alginate and sodium alginate) as encapsulating agents by a spray-drying process...
May 11, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28531659/risk-assessment-of-the-endocrine-disrupting-effects-of-nine-chiral-pesticides
#4
Qin Song, Yi Zhang, Lu Yan, Jinghua Wang, Chensheng Lu, Quan Zhang, Meirong Zhao
The increased release of chiral pesticides into the environment has generated interest in the role of enantioselectivity in the environmental fate and ecotoxicological effects of these compounds. However, the information on the endocrine disrupting effects (EDEs) of chiral pesticides is still limited and discrepancies are also usually observed among different assays. In this study, we investigated the enantioselectivity of EDEs via estrogen and thyroid hormone receptors for nine chiral pesticides using in vitro and in silico approaches...
May 11, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28531657/efficient-water-disinfection-with-ag2wo4-doped-mesoporous-g-c3n4-under-visible-light
#5
Yi Li, Yanan Li, Shuanglong Ma, Pengfei Wang, Qianlei Hou, Jingjing Han, Sihui Zhan
Ag2WO4/g-C3N4 composite photocatalyst was synthesized by polymerization of thiourea and ammonia chloride combined with the deposition-precipitation method, which was applied as an efficient visible-light driven photocatalyst for inactivating Escherichia coli (E. coli). The physicochemical properties of these photocatalysts were systematically characterized by various techniques such as SEM, TEM, XRD, FT-IR, BET, UV-vis DRS and PL. The synthesized photocatalysts exhibited outstandingly enhanced photocatalytic disinfection efficiency compared with that of pure g-C3N4 and Ag2WO4 under visible light...
May 11, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28531655/competitive-adsorption-behavior-toward-metal-ions-on-nano-fe-mg-ni-ternary-layered-double-hydroxide-proved-by-xps-evidence-of-selective-and-sensitive-detection-of-pb-ii
#6
Shan-Shan Li, Min Jiang, Tian-Jia Jiang, Jin-Huai Liu, Zheng Guo, Xing-Jiu Huang
Hypersensitive and highly selective nanomaterials for the measurement of heavy metal ions (HMIs) hold a key to electro-analysis. Various works improved the results of analysis but without scientific understanding. Herein, Fe/Mg/Ni-layered double hydroxide (LDH) has been successfully prepared and its electrochemical behavior for Pb(II) detection is also studied using square wave anodic stripping voltammetry (SWASV). The well performance of electrochemistry suggest that the modification with Fe/Mg/Ni-LDH significantly promotes the selectivity and sensitivity toward Pb(II)...
May 11, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28531661/investigation-of-the-thermal-hazardous-effect-of-protective-clothing-caused-by-stored-energy-discharge
#7
Jiazhen He, Yehu Lu, Yan Chen, Jun Li
In addition to direct thermal energy from a heating source, a large amount of thermal energy stored in clothing will continuously discharge to skin after exposure. Investigating the thermal hazardous effect of clothing caused by stored energy discharge is crucial for the reliability of thermal protective clothing. In this study several indices were proposed and applied to evaluate the impact of thermal energy discharge on human skin. The heat discharge from different layers of fabric systems was investigated, and the influences of air gaps and applied compression were examined...
May 10, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28525880/differential-sulphur-assimilation-mechanism-regulates-response-of-arabidopsis-thaliana-natural-variation-towards-arsenic-stress-under-limiting-sulphur-condition
#8
Ria Khare, Smita Kumar, Tapsi Shukla, Avriti Ranjan, Prabodh Kumar Trivedi
Arsenic (As) is a ubiquitous element, which imposes threat to crops productivity and human health through contaminated food chain. As a part of detoxification mechanism, As is chelated and sequestered into the vacuoles via sulphur containing compounds glutathione (GSH) and phytochelatins (PCs). Under limiting sulphur (LS) conditions, exposure of As leads to enhanced toxic effects in plants. Therefore, it is a prerequisite to understand molecular mechanisms involved in As stress response under sulphur deficiency conditions in plants...
May 8, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28521204/numerical-simulations-of-mechanical-and-ignition-deflagration-responses-for-pbxs-under-low-to-medium-level-velocity-impact-loading
#9
Kun Yang, Yanqing Wu, Fenglei Huang, Ming Li
An effective computational model is required to accurately predict the dynamic responses in accidental initiations of explosives. The present work uses a series of two-dimensional mechanical-chemical simulations performed via a hydrodynamic-code, DREXH-2D, to efficiently describe the mechanical and ignition-deflagration responses of cased cylindrical polymer-bonded explosives (PBXs) undergoing a low-to-medium-level impact (70-350m/s) in longitudinal direction. The ignition response was predicted based on an ignition criterion of effective plastic work...
May 8, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28511044/bentonite-modified-with-zinc-enhances-aflatoxin-b1-adsorption-and-increase-survival-of-fibroblasts-3t3-and-epithelial-colorectal-adenocarcinoma-cells-caco-2
#10
Janaína Nones, Anita Solhaug, Gunnar Sundstøl Eriksen, Domingos Lusitâneo Pier Macuvele, Anicleto Poli, Cíntia Soares, Andrea Gonçalves Trentin, Humberto Gracher Riella, Jader Nones
Bentonites are commonly used as feed additives to reduce the bioavailability and thus the toxicity of aflatoxins by adsorbing the toxins in the gastrointestinal tract. Aflatoxins are particular harmful mycotoxins mainly found in areas with hot and humid climates. They occur in food and feedstuff as a result of fungal contamination before and after harvest. The aim of this study was to modify Brazilian bentonite clay by incorporation of zinc (Zn) ions in order to increase the adsorption capacity and consequently reduce the toxicity of aflatoxins...
May 6, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28521206/decontamination-of-multiple-heavy-metals-containing-effluents-through-microbial-biotechnology
#11
Minxi Wu, Jingjing Liang, Jie Tang, Guang Li, Shiping Shan, Zhaohui Guo, Le Deng
To decontaminate heavy metal-containing waste water, a microbial biotechnology was developed by using the synergy between Sulfate reducing bacteria (SRB), Bacillus cereus (B. cereus) and Camellia oleifera cake (COC). In this process the COC degradation assisted by B.cereus, created an anoxic environment and provided energy and nutrition for SRB. Both of B. cereus and SRB played significant roles through biosorption, bioaccumulation and biosurfactant production. Meanwhile, a flotation technology commonly used in many effluent treatments has been led into this system for increasing the efficiency as well...
May 5, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28501642/a-novel-method-for-photo-oxidative-degradation-of-diatrizoate-in-water-via-electromagnetic-induction-electrodeless-lamp
#12
Lingjun Meng, Shaogui Yang, Cheng Sun, Huan He, Qiming Xian, Shiyin Li, Guoxiang Wang, Limin Zhang, Dong Jiang
In this study, an electromagnetic induction electrodeless lamp (EIEL) was first introduced into UV advanced oxidation processes (AOPs) for photodegradation of Diatrizoate (DTZ), which was the most persistent iodinated X-ray contrast medium (ICM), and traditional Hg lamps were taken as references. Direct photolysis rate of DTZ under EIEL irradiation was 1.34 times as that under Hg irradiation, but the electric energy consumption was 0.87 times. In this sense, the combination of EIEL and oxidants (O2, H2O2 and S2O8(2-)(PS)) was further investigated...
May 5, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28525879/application-of-calcium-peroxide-in-water-and-soil-treatment-a-review
#13
REVIEW
Shuguang Lu, Xiang Zhang, Yunfei Xue
Calcium peroxide (CP) has been progressively applied in terms of environmental protection due to its certain physical and chemical properties. This review focuses on the latest progresses in the applications of CP in water and soil treatment, including wastewater treatment, surface water restoration and groundwater and soil remediation. The stability of CP makes it an effective solid phase to supply H2O2 and O2 for aerobic biodegradation and chemical degradation of contaminants in water and soil. CP has exerted great performance in the removal of dyes, chlorinated hydrocarbons, petroleum hydrocarbons, pesticides, heavy metals and various other contaminants...
May 4, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28501643/efficient-wastewater-treatment-and-simultaneously-electricity-production-using-a-photocatalytic-fuel-cell-based-on-the-radical-chain-reactions-initiated-by-dual-photoelectrodes
#14
Kai Zhao, Jing Bai, Qingyi Zeng, Yan Zhang, Jinhua Li, Linsen Li, Ligang Xia, Baoxue Zhou
Efficient conversion of wastewater into clean energy was achieved by applying a radical chain reaction strategy in a solar responsive photocatalytic fuel cell (PFC) system. The system was constructed with two photoelectrodes where ferrous ions were added to enhance the radical reactions for organic pollutants degradation from the surface of electrodes to the whole solution system via coming into a continuous radical chain reaction. The results indicated that the short-circuit current (Jsc) and the power density (JVmax) obtained in the PFC system is up to 1...
May 4, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28505509/fungal-biocatalyst-activated-by-an-electric-field-improved-mass-transfer-and-non-specificity-for-hydrocarbon-degradation-in-an-airlift-bioreactor
#15
Victor Sánchez-Vázquez, Keiko Shirai, Ignacio González, Mariano Gutiérrez-Rojas
The combination of biological and electrochemical techniques enhances the bioremediation efficiency of treating oil-contaminated water. In this study a non-growing fungal whole cell biocatalyst (BC; Aspergillus brasiliensis attached to perlite) pretreated with an electric field (EF), was used to degrade a hydrocarbon blend (hexadecane-phenanthrene-pyrene; 100:1:1w/w) in an airlift bioreactor (ALB). During hydrocarbon degradation, all mass transfer resistances (internal and external) and sorption capacity were experimentally quantified...
May 3, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28501641/facile-preparation-of-3d-go-cncs-composite-with-adsorption-performance-towards-bmim-cl-from-aqueous-solution
#16
Hua Zhou, Bin Gao, Yanmei Zhou, Han Qiao, Wenli Gao, Haonan Qu, Shanhu Liu, Qingyou Zhang, Xiaoqiang Liu
A novel three-dimensional crumpled graphene oxide/cellulose nanocrystals (GO/CNCs) composite was successfully synthesized and firstly used as adsorbent for the removal of ionic liquid [BMIM][Cl] from aqueous solution. The 3D crumpled structure and abundant oxygen of the functional groups on GO/CNCs composite can provide more chance for the sorption of [BMIM][Cl] compared with CNCs and GO, respectively. Therefore, a series of batch experiments were carried out to evaluate the adsorptive property of 3D GO/CNCs composite towards [BMIM][Cl], such as the GO mass content, the pH value and contact time...
May 3, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28501640/rapid-immobilization-of-simulated-radioactive-soil-waste-by-microwave-sintering
#17
Shuai Zhang, Xiaoyan Shu, Shunzhang Chen, Huimin Yang, Chenxi Hou, Xueli Mao, Fangting Chi, Mianxin Song, Xirui Lu
A rapid and efficient method is particularly necessary in the timely disposal of seriously radioactive contaminated soil. In this paper, a series of simulated radioactive soil waste containing different contents of neodymium oxide (3-25wt.%) has been successfully vitrified by microwave sintering at 1300°C for 30min. The microstructures, morphology, element distribution, density and chemical durability of as obtained vitrified forms have been analyzed. The results show that the amorphous structure, homogeneous element distribution, and regular density improvement are well kept, except slight cracks emerge on the magnified surface for the 25wt...
May 3, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28505511/novel-electrodialysis-cation-exchange-membrane-prepared-by-2-acrylamido-2-methylpropane-sulfonic-acid-heavy-metal-ions-removal
#18
M Nemati, S M Hosseini, M Shabanian
In the present work a novel heterogeneous cation exchange membrane (CEM) composed of poly vinyl chloride (PVC) and 2-acrylamido-2-methylpropane sulfonic acid based hydrogel (AMAH) was prepared. The membranes were fabricated with different fractions of AMAH to optimize the performance in desalination. The hydrogel was characterized by FT-IR to prove the successful synthesis. The membrane properties such as permselectivity, ionic permeability, flux, water content, electrical resistance, morphology, contact angle and dimensional stability were evaluated...
May 1, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28505510/a-potential-mechanism-for-degradation-of-4-5-dichloro-2-n-octyl-3-2h-isothiazolone-dcoit-by-brown-rot-fungus-gloeophyllum-trabeum
#19
Yuan Zhu, Jing Xue, Jinzhen Cao, Hongzhan Xiao
This study aims to investigate the biodegradation of 4,5-dichloro-2-(n-octyl)-3[2H]-isothiazolone (DCOIT) by a brown-rot fungus Gloeophyllum trabeum as well as the involved mechanism. In the present study, the retentions of DCOIT in treated Masson pine (Pinus massoniana) (MP) chips were determined periodically after incubation with G. trabeum. Then a Fenton-like reaction, known as the chelator-mediated Fenton (CMF) chemistry was used to degrade DCOIT that mimics the degradation pathway of DCOIT by typical brown-rot fungi, and the degradation intermediates were further analyzed...
May 1, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28501747/equilibrium-kinetic-and-thermodynamic-studies-for-adsorption-of-btex-onto-ordered-mesoporous-carbon-omc
#20
Mas Iwan Konggidinata, Bing Chao, Qiyu Lian, Ramalingam Subramaniam, Mark Zappi, Daniel Dianchen Gang
Chemical and petrochemical industries produce substantial amounts of wastewater everyday. This wastewater contains organic pollutants such as benzene, toluene, ethylbenzene and xylenes (BTEX) that are toxic to human and aquatic life. Ordered Mesoporous Carbon (OMC), the adsorbent that possesses the characteristics of an ideal adsorbent was investigated to understand its properties and suitability for BTEX removal. Adsorption isotherms, adsorption kinetics, the effects of initial BTEX concentrations and temperatures on the adsorption process were studied...
May 1, 2017: Journal of Hazardous Materials
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