Results 31 to 40 of about 5,064,609 (152)

Enhanced performance of hexavalent chromium reducing cathodes in the presence of Shewanella oneidensis MR-1 and lactate

open access: yes, 2013
Biocathodes for the reduction of the highly toxic hexavalent chromium (Cr(VI)) were investigated using Shewanella oneidensis MR-1 (MR-1) as a biocatalyst and performance was assessed in terms of current production and Cr(VI) reduction. Potentiostatically
Xafenias, Nikolaos   +2 more
core   +1 more source

Application of Mechanochemical Procedure on Aqueous Cr(VI) Removal with Additives of Activated Carbon and Fe0/Fe2O3 [PDF]

open access: yes, 2022
The green technique of mechanical ball milling has been extensively employed in the fabrication of environmentally functional materials. The improved specific surface area and modified surface properties of the resulting materials contribute to the high ...
Fang, YI, YI Fang;900339
core  

Selective Reduction of Cr(VI) in Chromium, Copper and Arsenic (CCA) Mixed Waste Streams Using UV/TiO2 Photocatalysis

open access: yesMolecules, 2015
The highly toxic Cr(VI) is a critical component in the Chromated Copper Arsenate (CCA) formulations extensively employed as wood preservatives. Remediation of CCA mixed waste and discarded treated wood products is a significant challenge.
Shan Zheng   +5 more
doaj   +1 more source

Cr(VI) Remediation With Inorganic As(III) As An Electron Sink Immobilized In A Ceramic Bead Packed Bed Biofilm Reactor

open access: yesChemical Engineering Transactions, 2018
Ceramic bead media Biofilm Reactor Performance was evaluated for Cr(VI) reduction utilizing As(III) as electron source with mixed culture of chemoautotrophic bacteria.
Tony E. Igboamalu, Evans M. N. Chirwa
doaj   +1 more source

An ecological new approach for treating Cr(VI)-containing industrial wastewater: Photochemical reduction

open access: yes, 2016
An ecological new approach for photochemical reduction of Cr(VI) in aqueous solution by adding into water-soluble copolymer, polyethylene glycol (PEG), was investigated.
Liu, Jie   +4 more
core   +1 more source

In Situ Bioremediation of Chromium (VI) In a Simulated Ferrochrome Slag

open access: yesChemical Engineering Transactions, 2017
Stability of chromium in the tailing dumps and stockpiles of chromium concentrate at chrome mining fields is affected by pH, redox potential, and the presence of other metallic species in the waste rocks. It is desirable to keep chromium in the dump site
N. Bansal, J.J. Coetzee, E.M.N. Chirwa
doaj   +1 more source

Removal of Cr(VI) ions by sewage sludge compost biomass from aqueous solutions: Reduction to Cr(III) and biosorption

open access: yes, 2017
Sewage sludge compost biomass was used as a novel biosorbent to remove hexavalent chromium from water. Surface area analysis, scanning electron microscopy, fourier-transform infrared spectroscopy, energy-dispersive X-ray spectroscopy, and point zero ...
Huixia Chen   +5 more
core   +1 more source

Photocatalytic degradation of malachite green by pyrite and its synergism with Cr(VI) reduction: Performance and reaction mechanism

open access: yes, 2015
Coexistence of organic compounds and heavy metals in industrial wastewater effluent is a serious environmental problem. In this study, pyrite was successfully employed as a photocatalyst for the simultaneous removal of malachite green (MG) and Cr(VI ...
Zhang, Zai-Wang   +7 more
core   +1 more source

Combined Treatment of Cr(VI)-Contaminated Soils by Reduction, Adsorption, and Solidification

open access: yes, 2022
Remediation of Cr(VI)-contaminated soil usually includes reducing Cr(VI) to Cr(III) with sub-sequent solidification. In this paper, a treatment technique that combines reduction, adsorption, and solidification was proposed.
Liaoyu Ye   +4 more
core   +1 more source

Low temperature reduction of hexavalent chromium by a microbial enrichment consortium and a novel strain of Arthrobacter aurescens

open access: yesBMC Microbiology, 2006
Background Chromium is a transition metal most commonly found in the environment in its trivalent [Cr(III)] and hexavalent [Cr(VI)] forms. The EPA maximum total chromium contaminant level for drinking water is 0.1 mg/l (0.1 ppm).
Thompson Vicki S   +3 more
doaj   +1 more source

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