文章基本信息

标题：Isolation of Different Azo Dye Decolorizing Bacteria and Their Decolorization Mechanisms
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作者：LinLin Quan ; Jiamin Huang ; Jicheng Qi 等
期刊名称：Nature, Environment and Pollution Technology
印刷版ISSN：0972-6268
出版年度：2018
卷号：17
期号：3
页码：981-986
语种：English
出版社：Technoscience Publications
摘要：Four strains, which can decolorize acid orange, congo red, methyl orange and amino black respectively, were isolated from anaerobic activated sludge using the enrichment, acclimation and purification methods. With 16S rDNA sequencing analysis, they were identified as Serratia nematodiphila subsp. sakuensis st, Morganella morganii subsp. morganii str, Lysinibacillus sp. BAB-5845 and Bacillus sp. NJSN49. The decolorization conditions were studied and results demonstrated that the optimal conditions for the four strains were starch of 4 g/L, peptone of 8 g/L, pH 7.5; sucrose of 2 g/L, yeast powder of 2 g/L, pH 7.5; yeast powder of 2 g/L, pH 7.0 and sucrose of 8 g/L, urea of 4 g/L, pH 6.0. UV-Vis, FTIR and GC-MS analysis showed that, with the four strains, -N=N- double bond in acid orange, congo red, methyl orange and amino amine were broken effectively and the related aromatic amino were yielded. Our research can provide efficient strains and technical parameters for azo dye wastewater treatment industry.
关键词：Azo dye;Decolorization;Bacteria;Acclimation