Biosorption of hexavalent chromium from aqueous solution by a tropical basidiomycete BDT-14 (DSM 15396) |
| |
Authors: | B D Trivedi K C Patel |
| |
Institution: | (1) Post Graduate Department of Biosciences, Sardar Patel University, Vallabh Vidyanagar, 388 120 Gujarat, India;(2) M. B. Patel Science College, Anand-388 001, Gujarat, India |
| |
Abstract: | Summary A tropical white-rot basidiomycete, BDT-14 (DSM 15396) was investigated for its chromium (VI) biosorption potential from an
aqueous solution. Pre-treatment of fungal biomass with acid resulted in 100% metal adsorption compared to only 26.64% adsorption
without any pre-treatment. Chromium adsorption was a rapid process at early exposure resulting in 60% chromium removal within
the first 2 h of exposure. An increase in biomass showed an increase in the total metal ions adsorption but a decrease in
specific uptake of metal ions. The concentrations of chromium had a pronounced effect on the rate of adsorption. The adsorption
efficiency was 100% when the initial Cr (VI) concentration was 100 mg l−1 with 1,000 mg biomass. Only 47.5% adsorption was observed with 500 mg l−1 Cr (VI) concentration. The adsorption data fit well with the Langmuir and Freundlich isotherm models. Comprehensive characterization
of parameters indicates BDT−14 biomass as a promising material for Cr (VI) adsorption. |
| |
Keywords: | Biomass Biosorption Chromium Isotherms White-rot fungi |
本文献已被 SpringerLink 等数据库收录! |
|