title: Performance and microbial community structures of hydrolysis acidification process treating azo and anthraquinone dyes in different stages.
abstract: In this study, performance of hydrolysis acidification process treating simulated dyeing wastewater containing azo and anthraquinone dyes in different stages was investigated. The decolorization ratio, CODCrremoval ratio, BOD5/CODCrvalue, and volatile fatty acids (VFAs) production were almost better in stage 1 than that in stage 2. Fourier transform infrared spectroscopy (FTIR) and gas chromatography-mass spectrometry (GC-MS) confirmed the biodegradation of Reactive Black 5 (RB5) and Remazol Brilliant Blue R (RBBR) in hydrolysis acidification process. Polymerase chain reaction-denaturing gradient gel electrophoresis (PCR-DGGE) analyses revealed that significant difference of microbial community structures existed in stage 1 and 2. The dominant species in stage 1 was related to Bacteroidetes group, while the dominant species in stage 2 was related to Bacteroidetes and Firmicutes groups. From the results, it could be speculated that different dyes' structures might have significant influence on the existence and function of different bacterial species, which might supply information for bacteria screening and acclimation in the treatment of actual dyeing wastewater.
authors.affiliation: School of Environment and Surveying Engineering, Suzhou University, Suzhou, Anhui, 234000, China.|College of Environmental Science and Engineering, Donghua University, 2999# North Renmin Road, Songjiang District, Shanghai, 201620, China.|State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Donghua University, Shanghai, 201620, China.
authors.forename: Na
authors.initials: N
authors.lastname: Liu
authors.affiliation: College of Environmental Science and Engineering, Donghua University, 2999# North Renmin Road, Songjiang District, Shanghai, 201620, China. xiexuehui@dhu.edu.cn.|State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Donghua University, Shanghai, 201620, China. xiexuehui@dhu.edu.cn.
authors.forename: Xuehui
authors.initials: X
authors.lastname: Xie
authors.affiliation: College of Environmental Science and Engineering, Donghua University, 2999# North Renmin Road, Songjiang District, Shanghai, 201620, China.|State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Donghua University, Shanghai, 201620, China.
authors.forename: Bo
authors.initials: B
authors.lastname: Yang
authors.affiliation: College of Environmental Science and Engineering, Donghua University, 2999# North Renmin Road, Songjiang District, Shanghai, 201620, China.|State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Donghua University, Shanghai, 201620, China.
authors.forename: Qingyun
authors.initials: Q
authors.lastname: Zhang
authors.affiliation: College of Environmental Science and Engineering, Donghua University, 2999# North Renmin Road, Songjiang District, Shanghai, 201620, China.|State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Donghua University, Shanghai, 201620, China.
authors.forename: Chengzhi
authors.initials: C
authors.lastname: Yu
authors.affiliation: College of Environmental Science and Engineering, Donghua University, 2999# North Renmin Road, Songjiang District, Shanghai, 201620, China.|State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Donghua University, Shanghai, 201620, China.
authors.forename: Xiulin
authors.initials: X
authors.lastname: Zheng
authors.affiliation: College of Environmental Science and Engineering, Donghua University, 2999# North Renmin Road, Songjiang District, Shanghai, 201620, China.|State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Donghua University, Shanghai, 201620, China.
authors.forename: Leyi
authors.initials: L
authors.lastname: Xu
authors.affiliation: College of Environmental Science and Engineering, Donghua University, 2999# North Renmin Road, Songjiang District, Shanghai, 201620, China.|State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Donghua University, Shanghai, 201620, China.
authors.forename: Ran
authors.initials: R
authors.lastname: Li
authors.affiliation: College of Environmental Science and Engineering, Donghua University, 2999# North Renmin Road, Songjiang District, Shanghai, 201620, China. liujianshe@dhu.edu.cn.|State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Donghua University, Shanghai, 201620, China. liujianshe@dhu.edu.cn.
authors.forename: Jianshe
authors.initials: J
authors.lastname: Liu
mesh_terms: D000880:Anthraquinones / Q000032:analysis* / Q000737:chemistry; D001391:Azo Compounds / Q000032:analysis* / Q000737:chemistry; D041963:Bacteroidetes / Q000254:growth & development*; D001673:Biodegradation, Environmental; D004396:Coloring Agents / Q000032:analysis* / Q000737:chemistry; D058645:Denaturing Gradient Gel Electrophoresis; D005232:Fatty Acids, Volatile / Q000032:analysis; D000068536:Bacillota / Q000254:growth & development*; D008401:Gas Chromatography-Mass Spectrometry; D006863:Hydrogen-Ion Concentration; D006868:Hydrolysis; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000737:chemistry; D018508:Water Purification / Q000379:methods*
chemical_list: D000880:Anthraquinones; D001391:Azo Compounds; D004396:Coloring Agents; D005232:Fatty Acids, Volatile; D014874:Water Pollutants, Chemical
keywords: Anthraquinone dye; Azo dye; Degradation; Dyeing wastewater; Hydrolysis acidification; Microbial community structures