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- Title
复合共基质对菌群脱色性能及群落结构的影响.
- Authors
刘娜; 秦祎婷; 吴根英; 余蕊; 张悦; 汪波; 谢学辉
- Abstract
Four different compound co-substrates including glucose + sucrose, glucose + peptone, sucrose + peptone, and peptone+beef extract were added into the mixed bacteria flora decolorization system of Reactive Black 5, respectively, to explore the effects of compound co-substrates on the biological decolorization of Reactive Black 5. Miseq Illumina sequencing technology was used to analyze the response differences of decolorized bacteria flora to different compound co-substrates. The results showed that peptone+beef extract was the best compound co-substrate. In the presence of it, the decolorization rate of the decolorizing bacteria flora on Reactive Black 5 (100 mg/L, 48 h) reached 69.84%. Miseq Illumina sequencing results reviewed that the decolorization effect of the bacteria flora was closely related to its microbial diversity, and the microbial community structure exhibited a large difference at each microbial taxonomic level. Proteobacteria were the predominant bacteria in all samples, while Firmicutes accounted for a large proportion in the presence of the best compound co-substrate peptone + beef extract. In addition, it was speculated that Enterococcus, Lactococcus, and Escherichia-Shigella might play important roles in the degradation of Reactive Black 5 by decolorizing bacteria flora, and the compound co-substrate peptone+beef extract could provide a good environment for their growth and metabolism. The study lays a theoretical foundation for the future use of different compound co-substrates to enhance microbial decolorization and degradation of actual printing and dyeing wastewater, as well as the guidance and screening of culturable functional bacteria.
- Publication
Environmental Science & Technology (10036504), 2021, Vol 44, Issue 4, p9
- ISSN
1003-6504
- Publication type
Article
- DOI
10.19672/j.cnki.1003-6504.2021.04.002