Insights into integration of polyhydroxyalkanoates (PHAs) production into wastewater treatment: Comparison of different electron acceptors on system function and PHA-producer enrichment

doi:10.1016/j.cej.2022.138631

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	Insights into integration of polyhydroxyalkanoates (PHAs) production into wastewater treatment: Comparison of different electron acceptors on system function and PHA-producer enrichment
	Liu, Baozhen 2; Wen, Qinxue 2; Huang, Long 4; Chen, Zhiqiang 1,2; Lin, Xiao 3; Liu, Shaojiao 2
刊名	Chemical Engineering Journal
	2023
卷号	451
关键词	Activated sludge process Bacteria Denitrification Nitrates Operating costs Reclamation Wastewater treatment Denitrification efficiencies Economic assessments Electron-acceptor Microbial communities Mixed microbial culture Polyhydroxyalkanoate Polyhydroxyalkanoates Resource recovery System functions Waste activated sludges
ISSN号	1385-8947
DOI	10.1016/j.cej.2022.138631
英文摘要	Mixed microbial culture polyhydroxyalkanoates (MMC PHA) process combined with mainstream wastewater treatment is a competitive resource recovery integrated process in which economical non-oxygen electron acceptors can be used to enrich PHA-producer and reduce operating costs. Oxygen and three non-oxygen electron acceptors (endogenous nitrate, exogenous nitrate, and nitrite) were used and comprehensively compared in terms of PHA production ability and microbial community ecophysiology in this study. The results showed that the PHA production ability with exogenous nitrate was comparable to that of oxygen, which had a maximum PHA content of 64.0 wt% (versus 62.3% of oxygen), qPHA of 0.7 mg COD/mg Xa/h, as well as 99.1% denitrification efficiency. The non-oxygen acceptors delayed the time for Arcobacter to occupy the dominant niche in the community, and the environmental selection pressure produced was slightly lower than that of oxygen. The symbiotic community between denitrifying bacteria and PHA-producers ensured the high PHA production potential and denitrification efficiency of the non-oxygen system. An economic assessment showed that the integrated PHA production and nitrate removal process with the mainstream wastewater treatment process proposed in this study could reduce aeration energy by 64%, and PHA recovery yield was 0.1 kg CODPHA/kg CODWAS from waste activated sludge (WAS). © 2022 Elsevier B.V.
语种	英语
出版者	Elsevier B.V.
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/159755]
专题	兰州理工大学
作者单位	1.School of Civil Engineering, Lanzhou University of Technology, Lanzhou; 730070, China; 2.State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin; 150090, China; 3.Beijing General Municipal Engineering Design & Research Institute Co., Ltd, Beijing; 100082, China 4.School of Ecology and Environment, Zhengzhou University, Zhengzhou; 450002, China;
推荐引用方式 GB/T 7714	Liu, Baozhen,Wen, Qinxue,Huang, Long,et al. Insights into integration of polyhydroxyalkanoates (PHAs) production into wastewater treatment: Comparison of different electron acceptors on system function and PHA-producer enrichment[J]. Chemical Engineering Journal,2023,451.
APA	Liu, Baozhen,Wen, Qinxue,Huang, Long,Chen, Zhiqiang,Lin, Xiao,&Liu, Shaojiao.(2023).Insights into integration of polyhydroxyalkanoates (PHAs) production into wastewater treatment: Comparison of different electron acceptors on system function and PHA-producer enrichment.Chemical Engineering Journal,451.
MLA	Liu, Baozhen,et al."Insights into integration of polyhydroxyalkanoates (PHAs) production into wastewater treatment: Comparison of different electron acceptors on system function and PHA-producer enrichment".Chemical Engineering Journal 451(2023).