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Characteristics of microbial community functional structure of a biological coking wastewater treatment system
Joshi, Dev Raj; Zhang, Yu; Zhang, Hong; Gao, Yingxin; Yang, Min
2018
Source PublicationJOURNAL OF ENVIRONMENTAL SCIENCES
ISSN1001-0742
Volume63Pages:105-115
SubtypeArticle
AbstractNitrogenous heterocyclic compounds are key pollutants in coking wastewater; however, the functional potential of microbial communities for biodegradation of such contaminants during biological treatment is still elusive. Herein, a high throughput functional gene array (GeoChip 5.0) in combination with Illumina HiSeq2500 sequencingwas used to compare and characterize the microbial community functional structure in a long run (500 days) bench scale bioreactor treating coking wastewater, with a control system treating synthetic wastewater. Despite the inhibitory toxic pollutants, GeoChip 5.0 detected almost all key functional gene (average 61,940 genes) categories in the cokingwastewater sludge. With higher abundance, aromatic ring cleavage dioxygenase genes including multi ring1,2diox; one ring2,3diox; catechol represented significant functional potential for degradation of aromatic pollutants which was further confirmed by Illumina HiSeq2500 analysis results. Response ratio analysis revealed that three nitrogenous compound degrading genes-nbzA (nitro-aromatics), tdnB (aniline), and scnABC (thiocyanate) were unique for coking wastewater treatment, which might be strong cause to increaseammonia level during the aerobic process. Additionally, HiSeq2500 elucidated carbozole and isoquinoline degradation genes in the system. These findings expanded our understanding on functional potential of microbial communities to remove organic nitrogenous pollutants; hence it will be useful in optimization strategies for biological treatment of coking wastewater. (C) 2017 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.
Department环境水质学国家重点实验室
KeywordCoking wastewater GeoChip Illumina HiSeq Functional genes Nitrogenous pollutants
Document Type期刊论文
Identifierhttp://ir.rcees.ac.cn/handle/311016/41114
Collection环境水质学国家重点实验室
Recommended Citation
GB/T 7714
Joshi, Dev Raj,Zhang, Yu,Zhang, Hong,et al. Characteristics of microbial community functional structure of a biological coking wastewater treatment system[J]. JOURNAL OF ENVIRONMENTAL SCIENCES,2018,63:105-115.
APA Joshi, Dev Raj,Zhang, Yu,Zhang, Hong,Gao, Yingxin,&Yang, Min.(2018).Characteristics of microbial community functional structure of a biological coking wastewater treatment system.JOURNAL OF ENVIRONMENTAL SCIENCES,63,105-115.
MLA Joshi, Dev Raj,et al."Characteristics of microbial community functional structure of a biological coking wastewater treatment system".JOURNAL OF ENVIRONMENTAL SCIENCES 63(2018):105-115.
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