Results 71 to 80 of about 5,064,609 (152)

Cr (VI) reduction by sulfidogenic and nonsulfidogenic microbial consortia

, 2003
In time course experiments, bacterial community compositions were compared between a sulfidogenic and two nonsulfidogenic Cr(VI)-reducing consortia enriched from metal-contaminated sediments. The consortia were subjected to 0 and 0.85 mM or 1.35 mM Cr(VI)
Bradley M. Tebo, B. M. Tebo, Y. M. Arias, Y. Meriah Arias   +3 more
core   +1 more source

Reduction of CR(VI) by Desulfovibrio vulgaris and Microbacterium sp.

, 2002
Many industrial wastes contain Cr(VI), a carcinogen and mutagen, the toxicity of which can be ameliorated by reduction to Cr(III). Microbacterium sp. NCIMB 13776 andDesulfovibrio vulgaris NCIMB 8303 reduced Cr(VI) to Cr(III) anoxically using 25 mM sodium
Humphries, A., Macaskie, L.E.
core   +1 more source

Reduction of chromium (VI) compounds by sulfate-reducing bacteria

Біологічні студії, 2010
Bacteria performing dissimilatory sulfate reduction were isolated from Yaziv sulfur deposit wells. 12 cultures were resistant to the presence of 1 mM Cr (VI) in the medium.
T. B. Peretyatko, S. P. Gudz
doaj   +1 more source

As(III) Oxidation and Cr(VI) Reduction Insight in an Indigenous Mixed Culture of Anaerobic Bacteria from a Local Environment

Chemical Engineering Transactions, 2017
Transition metal and metalloid oxyanions such as Cr-compound (CrO4-2) and As-compound (H3AsO3) are common pollutants routinely detected in effluent waste streams from the mining industry around the world.
T.E. Igboamalu, E.M.N. Chirwa
doaj   +1 more source

A mechanism study of light-induced Cr(VI) reduction in an acidic solution

, 2014
The mechanisms of photo-catalytic reduction of Cr(VI) were investigated in acidic solutions with and without Fe(III). In a system without Fe(III), no Cr(VI) reduction was observed in dark conditions; conversely, under light conditions, the reduction ...
Hsu, C.L., Lin, C.F., Wang, S.L., 王尚禮, 陳仁炫, Chen, C.C., Chen, J.H., Tzou, Y.M., 鄒裕民   +8 more
core   +1 more source

Effect of Organic Substrates on the Photocatalytic Reduction of Cr(VI) by Porous Hollow Ga2O3 Nanoparticles

Nanomaterials, 2018
Porous hollow Ga2O3 nanoparticles were successfully synthesized by a hydrolysis method followed by calcination. The prepared samples were characterized by field emission scanning electron microscope, transmission electron microscope, thermogravimetry and
Jin Liu, Huihui Gan, Hongzhang Wu, Xinlei Zhang, Jun Zhang, Lili Li, Zhenling Wang   +6 more
doaj   +1 more source

The reduction of Cr(VI) to Cr(III) mediated by environmentally relevant carboxylic acids: State-of-the-art and perspectives

, 2019
International audienceThe detoxification process mediated by carboxylic acids (CAs) has received considerable spotlights since CAs are clean reagent and ubiquitous in the natural environments and effluents.
Oturan, Mehmet A., Sun, T., Oturan, Nihal, Gong, Y., Bi, X., Jiang, B.   +5 more
core   +1 more source

S and N codoping disrupts the electronic symmetry of the lignin-based porous carbon to enhance the removal of Cr(VI): Adsorption-reduction-readsorption mechanism

Industrial Crops and Products
The reduction and precipitation of Cr during the adsorption process has always been challenging. In this study, S and N codoped lignin-based porous carbon (SN-LPC) was prepared by hydrothermal treatment and K-intercalation activation for the removal of ...
Wendi Fang, Naixin Kang, Le Huang, Guiying Dai, Xueting Fei, Hongxu Liang, Hongxiang Hu   +6 more
doaj   +1 more source

Cr(VI) removal using the combination of the Cr(VI)-resistant and Cr(VI)-reducing biofilm and the alum-polyacrylamide

, 2020
This paper describes the removal of Cr(VI) using the combination of bacterial reduction of Cr(VI) to Cr(III) by wood husk–packed column containing the Cr(VI)-reducing biofilm followed by Cr(III) removal using the coagulation-flocculation technique.
Ahmad, Wan Azlina, Zakaria, Zainul Akmar
core   +1 more source

Reduction of carcinogenic chromium by green synthesized nickel nanoparticles: A sustainable approach for environmental remediation

Sustainable Chemistry for the Environment
Hexavalent chromium (Cr (VI)) contamination in water sources poses severe environmental and health risks due to its carcinogenic nature. Recent advances in nanotechnology have reported promising solutions for remediating Cr (VI)-contaminated environments.
Aiman Shaikh, Viquar Shaikh, Yusufi Mujahid, Khursheed Ahmed, Kailas Doke   +4 more
doaj   +1 more source