期刊
JOURNAL OF HAZARDOUS MATERIALS
卷 262, 期 -, 页码 580-588出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jhazmat.2013.09.006
关键词
Azo dyes; Biotransformation; Chromate reduction; Azoreductase; Toxicity
资金
- University Grants Commission (UGC), New Delhi, India
- Council of Scientific and Industrial Research (CSIR), New Delhi
Azo dyes constitute the largest and diverse group of dyes, widely used in number of industries that are contributing toward organic and inorganic load of effluent treatment. In the present study, Lysinibacillus sp. KMK-A was able to effectively decolorize Orange M2R dye up to 2000 mg l(-1) (V-max of 19.6 mg l(-1) h(-1) and K-m of 439 mg l(-1)) and reduce Cr(VI) up to 250 mg l(-1) (V-max of 3.6 mg l(-1) h(-1) and K-m 28.3 mg l(-1)). It also has an ability of simultaneous decolorization of Orange M2R dye (200-1000 mg l(-1)) with reduction of Cr(VI) (50-200 mg l(-1)). Significant reduction in total organic carbon content, chemical and biological oxygen demand along with spectroscopic and chromatographic analysis confirmed the biotransformation of Orange M2R. Involvement of enzymes namely azoreductase and chromate reductase was observed during biotransformation. The phyto and geno toxicity studies demonstrated that metabolites of dye degradation were non-toxic. Higher tolerance with simultaneous decolorization and detoxification of azo dyes in presence of Cr(VI) makes Lysinibacillus sp. KMK-A, a potential candidate for eco-friendly remediation of metal contaminated dye effluents. (C) 2013 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据