Bioremediation of textile azo dyes by aerobic bacterial consortium - Aerobic degradation of selected azo dyes by bacterial consortium

被引：132

作者：

Senan, RC ^{[1
]}

Abraham, TE ^{[1
]}

机构：

[1] CSIR, Reg Res Lab, Biochem Proc Sect, Div Polymer, Trivandrum 695019, Kerala, India

来源：

BIODEGRADATION | 2004年 / 15卷 / 04期

关键词：

azo dye; biodegradation; consortium; decolorization; laccase; Pseudomonas putida;

D O I：

10.1023/B:BIOD.0000043000.18427.0a

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

An aerobic bacterial consortium consisting of two isolated strains (BF1, BF2) and a strain of Pseudomonas putida (MTCC 1194) was developed for the aerobic degradation of a mixture of textile azodyes and individual azodyes at alkaline pH (9-10.5) and salinity (0.9-3.68 g/l) at ambient temperature (28 +/- 2 degreesC). The degradation efficiency of the strains in different media (mineral media and in the Simulated textile effluent (STE)) and at different dye concentrations were studied. The presence of a H2O2 independent oxidase laccase (26.5 IU/ml) was found in the culture filtrate of the organism BF2. The analysis of the degraded products by TLC and HPLC, after the microbial treatment of the dyes showed the absence of amines and the presence of low molecular weight oxidative degradation products. The enzymes present in the crude supernatant was found to be reusable for the dye degradation.

引用

页码：275 / 280

页数：6

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