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论文类型：期刊论文

发表时间：2009-06-01

发表刊物：BIORESOURCE TECHNOLOGY

收录刊物：SCIE、EI、PubMed

卷号：100

期号：12

页面范围：2982-2987

ISSN号：0960-8524

关键字：Bio-decolorization; Co-immobilization; Quinone-reducing consortium; Anthraquinone; 16S rDNA gene

摘要：In the present study, the accelerating effect of co-immobilized anthraquinone and quinone-reducing consortium was investigated in the bio-decolorization process. The anthraquinone and quinone-reducing consortium were co-immobilized by entrapment in calcium alginate. The co-immobilized beads exhibited good catalytic activity and increased the decolorization rate for many kinds of azo dyes. The reusability of the co-immobilized beads was evaluated with repeated-batch decolorization experiments. After ten repeated experiments, the decolorization rate of co-immobilized beads retained over 92.8% of their original value. Furthermore, acclimatized quinone-reducing consortium was analyzed by denaturing gradient gel electrophoresis (DGGE) and 16S rDNA gene sequencing to get the complete picture of its diversity. This study explored a great improvement of conventional treatment system and the new bio-treatment concept. (C) 2009 Elsevier Ltd. All rights reserved.