Fermentation waste of Aspergillus terreus: a potential copper biosorbent |
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Authors: | Gulati Ruchi Saxena R.K. Gupta Rani |
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Affiliation: | (1) Department of Microbiology, University of Delhi, South campus, Benito Juarez Road, New Delhi, 110021, India |
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Abstract: | Aspergillus terreus mycelial waste produced during lipase production showed good copper biosorption capacity (160–180 mg Cu2+ biosorbed/g dry biomass). The sorption process followed fast kinetics and the absorption behaviour could be explained by a Freundlich isotherm model. The process was temperature independent and unaffected by the presence of many competing ions in a multi-ion situation. Maximum biosorption occurred between pH 4 and 5. The biomass could efficiently remove copper from mine effluents. Moreover the loaded biomass could easily be desorbed by a simple acid wash and could be reused a number of times without a decline in its biosorbing potential, thus making the process cost-effective. |
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Keywords: | A. terreus biomass biosorption copper |
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