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Application of a novel bacterial consortium for mineralization of sulphonated aromatic amines



Application of a novel bacterial consortium for mineralization of sulphonated aromatic amines



Bioresource Technology 102(2): 765-771



A novel bacterial consortium (TJ-2) for mineralization of aromatic amines resulting from decolorization of azo dyes was developed. Three bacterial strains were identified as Pseudomonas pseudoalcaligenes (TJ-21,EU072476), Pseudomonas citronellolis (TJ-22,EU072477) and Pseudomonas testosterone (TJ-23,EU072477) by 16S rRNA gene sequence analysis. Aromatic amine mineralization under aerobic conditions was observed to be significantly higher with the consortium as compared to pure strains indicating complementary interactions among these strains. It was observed that more than 90% mineralization of aromatic amines was achieved within 18h for different initial aromatic amines concentrations. It was also observed that aromatic amine mineralization depends upon the structure of aromatic amine. Para- and meta-hydroxy substituted aromatic amine were easily mineralized as compared to ortho-substituted which undergoes autoxidation when exposed to oxygen. The consortium was capable of mineralizing other aromatic amines, thus, conferring the possibility of application of TJ-2 for the treatment of industrial wastewaters containing aromatic amines.

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Accession: 051607514

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PMID: 20863689

DOI: 10.1016/j.biortech.2010.08.098



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