Removal of heavy metals by biosorption |
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| Authors: | Ackmez Mudhoo Vinod K Garg Shaobin Wang |
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| Institution: | (1) Department of Chemical and Environmental Engineering, Faculty of Engineering, University of Mauritius, R?duit, Mauritius;(2) Present address: 4, Rajiv Gandhi Street, Maurel Road, Riviere du Rempart, Mauritius;(3) Department of Environmental Science and Engineering, Guru Jambheshwar University of Science and Technology, Hisar, 125001, Haryana, India;(4) Department of Chemical Engineering, Curtin University of Technology, G.P.O. Box U1987, Perth, WA, 6845, Australia |
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| Abstract: | Industrialization and urbanization have resulted in increased releases of toxic heavy metals into the natural environment
comprising soils, lakes, rivers, groundwaters and oceans. Research on biosorption of heavy metals has led to the identification
of a number of microbial biomass types that are extremely effective in bioconcentrating metals. Biosorption is the binding
and concentration of adsorbate from aqueous solutions by certain types of inactive and dead microbial biomass. The novel types
of biosorbents presently reviewed are grouped under fungal biomass, biomass of non-living, dried brown marine algae, agricultural
wastes and residues, composite chitosan biosorbent prepared by coating chitosan, cellulose-based sorbents and bacterial strains.
The reports discussed in this review collectively suggest the promise of biosorption as a novel and green bioremediation technique
for heavy metal pollutants from contaminated natural waters and wastewaters. |
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