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Evaluating the effect of fenton pretreated pyridine wastewater under different biological conditions: Microbial diversity and biotransformation pathways
Guadie, Awoke; Han, Jing-Long; Liu, Wenzong; Ding, Yang-Cheng; Minale, Mengist; Ajibade, Fidelis O.; Zhai, Siyuan; Wang, Hong-Cheng; Cheng, Haoyi; Ren, Nanqi; Wang, Aijie
2021-06-01
Source PublicationJOURNAL OF ENVIRONMENTAL MANAGEMENT
ISSN0301-4797
Volume287Pages:-
AbstractPyridine contamination poses a significant threat to human and environmental health. Due to the presence of nitrogen atom in the pyridine ring, the pi bond electrons are attracted toward it and make difficult for pyridine treatment with biological and chemical methods. In this study, coupling Fenton treatment with different biological process was designed to enhance pyridine biotransformation and further mineralization. After Fenton oxidation process optimized, pretreated pyridine was evaluated under three biological (anaerobic, aerobic and microaerobic) operating conditions. Under optimum Fenton oxidation, pyridine (30?75%) and TOC (5?25%) removal efficiencies were poor. Biological process alone also showed insignificant removal efficiency, particularly anaerobic (pyridine = 8.2%; TOC = 5.3%) culturing condition. However, combining Fenton pretreatment with biological process increased pyridine (93?99%) and TOC (87?93%) removals, suggesting that hydroxyl radical generated during Fenton oxidation enhanced pyridine hydroxylation and further mineralization in the biological (aerobic > microaerobic > anaerobic) process. Intermediates were analyzed with UPLC-MS and showed presence of maleic acid, pyruvic acid, glutaric dialdehyde, succinic semialdehyde and 4-formylaminobutyric acid. High-throughput sequencing analysis also indicated that Proteobacteria (35?43%) followed by Chloroflexi (10.6?24.3%) and Acidobacteria (8.0?29%) were the dominant phyla detected in the three biological treatment conditions. Co-existence of dominant genera under aerobic/microaerobic (Nitrospira > Dokdonella > Caldilinea) and anaerobic (Nitrospira > Caldilinea > Longilinea) systems most probably play significant role in biotransformation of pyridine and its intermediate products. Overall, integrating Fenton pretreatment with different biological process is a promising technology for pyridine treatment, especially the combined system enhanced anaerobic (>10 times) microbial pyridine biotransformation activity.
Department中国科学院环境生物技术重点实验室
KeywordPyridine Microbial community Fenton pretreatment Mineralization Biodegradation
WOS Research AreaEnvironmental Sciences
Document Type期刊论文
Identifierhttps://ir.rcees.ac.cn/handle/311016/46113
Collection中国科学院环境生物技术重点实验室
Affiliation1.Chinese Acad Sci, Key Lab Environm Biotechnol, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China
2.Arba Minch Univ, Coll Nat Sci, Dept Biol, Arba Minch 21, Ethiopia
3.Harbin Inst Technol, Sch Civil & Environm Engn, Shenzhen 518055, Peoples R China
4.Tongji Univ, UNEP Tongji Inst Environm Sustainable Dev, Coll Environm Sci & Engn, Shanghai 200092, Peoples R China
Recommended Citation
GB/T 7714
Guadie, Awoke,Han, Jing-Long,Liu, Wenzong,et al. Evaluating the effect of fenton pretreated pyridine wastewater under different biological conditions: Microbial diversity and biotransformation pathways[J]. JOURNAL OF ENVIRONMENTAL MANAGEMENT,2021,287:-.
APA Guadie, Awoke.,Han, Jing-Long.,Liu, Wenzong.,Ding, Yang-Cheng.,Minale, Mengist.,...&Wang, Aijie.(2021).Evaluating the effect of fenton pretreated pyridine wastewater under different biological conditions: Microbial diversity and biotransformation pathways.JOURNAL OF ENVIRONMENTAL MANAGEMENT,287,-.
MLA Guadie, Awoke,et al."Evaluating the effect of fenton pretreated pyridine wastewater under different biological conditions: Microbial diversity and biotransformation pathways".JOURNAL OF ENVIRONMENTAL MANAGEMENT 287(2021):-.
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