Sorption of heavy metals by four basidiomycetous fungi |
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Authors: | S Dey P R N Rao B C Bhattacharyya M Bandyopadhyay |
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Institution: | (1) Environmental Engineering Laboratory, Department of Civil Engineering, Indian Institute of Technology, 721302 Kharagpur, India;(2) Biotechnology Programme, Department of Chemical Engineering, Indian Institute of Technology, 721302 Kharagpur, India |
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Abstract: | Biosorptions of Pb2+, Cr6+, Cd2+ and Ni2+ were investigated, with special emphasis on the first one, using live and dead fungal mycelia. Of the four fungi, namely Polyporus ostreiformis, Volvariella volvacea, Pleurotus sajor-caju and Phanerochaete chrysosporium, the last one was found to be most effective in Pb2+ removal. Total biosorption was effected in 6 days up to the Pb2+ concentration of 6 mg/l, with a specific uptake of 1.33 mg Pb2+/g dry cell mass. The removal of other three metals varied between 28.8–73.3% from a medium containing 4 mg/l of each of the metals.Laboratory facilities created under M.Tech programme in Biotechnology and Engineering (sponsored by Department of Biotechnology, Govt. of India) were partly utilized for this study. |
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