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- W1971297595 abstract "Large amounts of chromite ore processing residues (COPR) containing hexavalent chromium (Cr(VI)) discharged from the production processes of sodium chromate and dichromate need to be treated since Cr(VI) has been recognized as a carcinogen internationally and has posed a great threat to the environment and human health. Remediation of COPR containing Cr(VI) with bacteria, biomass and ferrous sulfate was studied in this work. A strain of Cr(VI)-reducing bacteria (CRB), a strain of sulfate-reducing bacteria (SRB), orange peels and ferrous sulfate were used as antidotes to reduce Cr(VI) to Cr(III). The experimental design methodologies — Uniform Design and Orthogonal Experimental Design were adopted to investigate the effects of the reductants on the reduction of the Cr(VI) in COPR. The results show that orange peels and CRB can reduce Cr(VI) in COPR over 95% in 30 days. Together using the four stuff can reduce Cr(VI) over 97% in 12 days. However, it seems that presence of the SRB is not beneficial to Cr(VI) reduction because it might refrains the action of CRB. Therefore, it is not surely beneficial to apply multiple microorganisms simultaneously to the reduction of Cr(VI) in COPR." @default.
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- W1971297595 date "2013-02-01" @default.
- W1971297595 modified "2023-09-23" @default.
- W1971297595 title "Remediation of Chromite Ore Processing Residues with Bacteria, Biomass and Ferrous Sulfate" @default.
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- W1971297595 doi "https://doi.org/10.4028/www.scientific.net/amm.295-298.1776" @default.
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