文献类型：期刊文献

英文题名：Characterization of functional microbial communities involved in different transformation stages in a full-scale printing and dyeing wastewater treatment plant

作者：Zhu, Yuling[1];Xu, Jiali[1];Cao, Xiwei[2];Cheng, Yutong[3]

机构：[1]Shaoxing Univ, Sch Life Sci, Sch Civil Engn, Huancheng West Rd 508, Shaoxing 312000, Zhejiang, Peoples R China;[2]Taiyuan Univ Technol, Coll Environm Sci & Engn, Taiyuan 030024, Shanxi, Peoples R China;[3]China Univ Geosci Beijing, Sch Water Resources & Environm, Beijing 100083, Peoples R China

年份：2018

卷号：137

起止页码：162

外文期刊名：BIOCHEMICAL ENGINEERING JOURNAL

收录：SCI-EXPANDED(收录号：WOS:000442977000018)、、EI(收录号：20182505335031)、Scopus(收录号：2-s2.0-85048515712)、WOS

基金：This study was supported by Shaoxing science and technology project [20171370057], National Natural Science Foundation of China [grant number 21206093], Innovation and entrepreneurship training program in Zhejiang [201712428001] and National undergraduate training program for innovation and Entrepreneurship [201710349006].

语种：英文

外文关键词：Azo-dye; High-throughput Miseq sequencing; Functional microbial communities; Decolorization; Mineralization

外文摘要：A simplified model employing anaerobic(3)-oxic(2)-sedimentaion reactor and multiple linear regression was proposed in this study. Four typical azo dyes were treated as model contaminants. Decolorization firstly happened by the cleavage of -N=N- double bond, aromatic amines were yielded. Afterwards, deamination and desulphurization occurred, phenol and naphthol were formed. Then dearomatization reactions were detected by introducing the atoms of O-2 into the aromatic nucleus. At last complete mineralization happened, yielding CO2 and H2O. Two types of functional microbial communities for -N=N- double bond cleavage and aromatic rings broken were statistically identified with multiple linear regression and the results were presented in t-value biplots. The genera of Enterococcus, Acidaminococcus, Bacteroides, Megasphaera and Klebsiella played significantly important roles in cleavage of -N=N-, while Pseudomonas, Anaerovorax and Longilinea demonstrated significantly positive relationship with breaking the aromatic rings. We must point out that species in the genera of Anaerovorax and Longilinea are usually reported as strictly anaerobic bacteria, while, in our study, they were abundant in aerobic compartments and significantly positive with aromatic compounds. The findings will provide important information for operation process optimization and treatment efficiency improvement in printing and dyeing wastewater treatment plant. (C) 2018 Elsevier B.V. All rights reserved.