{"title":"The role of pH on Cr(VI) Reduction and Removal by Arthrobacter Viscosus","authors":"B. Silva, H. Figueiredo, I. C. Neves, T. Tavares","volume":19,"journal":"International Journal of Chemical and Molecular Engineering","pagesStart":79,"pagesEnd":83,"ISSN":"1307-6892","URL":"https:\/\/publications.waset.org\/pdf\/4530","abstract":"Arthrobacter viscosus biomass was used for Cr(VI)\nbiosorption. The effect of pH on Cr(VI) reduction and removal from\naqueous solution was studied in the range of 1-4. The Cr(VI) removal\ninvolves both redox reaction and adsorption of metal ions on biomass\nsurface. The removal rate of Cr(VI) was enhanced by very acid\nconditions, while higher solution pH values favored the removal of\ntotal chromium. The best removal efficiency and uptake were\nreached at pH 4, 72.5 % and 12.6 mgCr\/gbiomass, respectively.","references":"[1] M. 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