Year: 2015, Issue: June

Comparative study of decolorization of methyl violet by Aspergillus terrus (MTCC 2578) and Aspergillus niger (MTCC 478).

Author:

Shishir Vind Sharma, Gopal Krishna Sahu and Anil Kumar

Keyword:

Decolorization, Methyl violet, Aspergillus terrus, Aspergillus niger.
Methyl violet (MV) is a Triphenylmethane dye, which has been extensively used in textile industry, color photography, paper printing and tannery industries. Due to these industrialization, huge amount of dyes are introduced into the natural water resource, these dyes are recalcitrant molecules which are very hazardous for environment and human health. Aspergillus has the ability to decolorize methyl violet and thus it a good species for bioremediation. The aim of this research work was to compare the optimizing potential of Aspergillus niger MTCC 478 and Aspergillus terrus MTCC 2578. The best result of decolorization was obtained with Aspergillus niger MTCC 478, which was found to decolorize 75% of 20 to 100 ?M at pH-2 methyl violet with additional carbon and nitrogen source whereas Aspergillus terrus MTCC 478 was found to decolorize only 64% of methyl violet within the concentration range 20 to 100 ?M at pH 3.0 with additional carbon and nitrogen source. Aspergillus niger was found more efficient than Aspergillus terrus.

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