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VOL. 3, ISSUE 1 (2021)
Biosorption of hexavalent chromium (VI) by Aspergillus nomius biomass and optimization of biosorption parameters
Authors
Soumyajit Guha, Sampa Debnath, Saswati Gayen
Abstract
In this study, the hexavalent chromium biosorption capacities of a chromium tolerant fungal strain isolated from tannery effluent (Bantala Leather Complex, Kolkata, India) and having 99.82% similarity with Aspergillus nomius, was studied. Here we discuss, the removal of chromium (VI) by Aspergillus nomius biomass and scrutinize the practicality of exploiting them for bioremediation purposes. Therefore, to optimize biosorption, we tested biosorption potentials for the different parameters like temperature, ionic strength, pH, initial metal concentration, pre-treatment agents in varying concentrations, volume, exposure time, Amount of biomass, a combination of both biomass and volume. Biosorption studies were performed and the effectiveness of Cr (VI) biosorption was compared for each parameter. It was observed that biosorption was maximum (approximately): 95% when experimented with an initial Cr (VI) concentration of 1mg/ml; 82% when sulfuric acid was used as a pretreatment agent; 98% at pH 6 in aqueous solution; 96% at a temperature of 250C; 96% when 1N sulfuric acid was used; 95% for 250ml solution; 98% when the exposure time was 24 hours and 97% when 1g of fungal biomass was used in 200ml of solution.
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Pages:461-467
How to cite this article:
Soumyajit Guha, Sampa Debnath, Saswati Gayen "Biosorption of hexavalent chromium (VI) by <em>Aspergillus nomius</em> biomass and optimization of biosorption parameters ". International Journal of Ecology and Environmental Sciences, Vol 3, Issue 1, 2021, Pages 461-467
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