DOI: 10.5176/2251-2489_BioTech15.35
Authors: Arpita Ghosh, Manisha Ghosh Dastidar, and T. R. Sreekrishnan
Abstract: In the present study the influence of different process parameters such as pH (3.5-6.5), initial dye concentration (1000-3000 mg/L) and time (40-50 hours) on biosorption of Acid Orange 86 dye using Aspergillus tamarii was studied in batch bioreactor. Response surface methodology (RSM) was applied to optimize the process parameters responsible for decolorization and to evaluate their interactions. Based on the statistical analysis the optimum conditions for maximum decolorization (87.24{6e6090cdd558c53a8bc18225ef4499fead9160abd3419ad4f137e902b483c465}) were found to be pH 5.34, initial dye concentration 1000 mg/L and time 50 hours. The optimization procedure of biosorption showed a close interaction between the experimental and theoretical values of decolorization. Transmission electron microscopic (TEM) and Energy-dispersive X-ray spectroscopic (EDX) analyses supported the evidence of biosorption of acid orange 86 dye by the fungi cells.
Keywords: Optimization, Response surface methodology, Biosorption, Acid Orange 86, Aspergillus tamarii
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