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

	Insights into integration of polyhydroxyalkanoates (PHAs) production into wastewater treatment: Comparison of different electron acceptors on system function and PHA-producer enrichment
	Liu, Baozhen 1; Wen, Qinxue 1; Huang, Long 2; Chen, Zhiqiang 1,3,5; Lin, Xiao 4; Liu, Shaojiao 1
	2023
发表期刊	Chemical Engineering Journal
ISSN	1385-8947
卷号	451
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.
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
DOI	10.1016/j.cej.2022.138631
收录类别	EI ; SCIE
语种	英语
WOS研究方向	Engineering
WOS类目	Engineering, Environmental ; Engineering, Chemical
WOS记录号	WOS:000861047500006
出版者	Elsevier B.V.
EI入藏号	20223512629097
EI主题词	Oxygen
EI分类号	452.2 Sewage Treatment ; 452.4 Industrial Wastes Treatment and Disposal ; 802.2 Chemical Reactions ; 804 Chemical Products Generally ; 804.2 Inorganic Compounds ; 911.1 Cost Accounting ; 911.2 Industrial Economics
来源库	WOS
引用统计	被引频次：3[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/159755
专题	兰州理工大学
通讯作者	Chen, Zhiqiang
作者单位	1.Harbin Inst Technol, Sch Municipal & Environm Engn, State Key Lab Urban Water Resource & Environm, Harbin 150090, Peoples R China; 2.Zhengzhou Univ, Sch Ecol & Environm, Zhengzhou 450002, Peoples R China; 3.Lanzhou Univ Technol, Sch Civil Engn, Lanzhou 730070, Peoples R China; 4.Beijing Gen Municipal Engn Design & Res Inst Co Lt, Beijing 100082, Peoples R China; 5.Harbin Inst Technol, Sch Environm, Harbin 150090, Peoples R China
通讯作者单位	兰州理工大学
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).