Freezing-low temperature treatment facilitates short-chain fatty acids production from waste activated sludge with short-term fermentation

	Freezing-low temperature treatment facilitates short-chain fatty acids production from waste activated sludge with short-term fermentation
	He, Zhang-Wei ; Zou, Zheng-Shuo ; Sun, Qian ; Jin, Hong-Yu ; Yao, Xing-Ye ; Yang, Wen-Jing ; Tang, Cong-Cong ; Zhou, Ai-Juan ; Liu, Wenzong; Ren, Yong-Xiang ; Wang, Aijie
	2022-03
Source Publication	BIORESOURCE TECHNOLOGY
ISSN	0960-8524
Volume	347 Issue:0 Pages:126337
Abstract	This study proposed a novel and high-efficiency strategy, i.e., freezing followed by low-temperature thermal treatment, to significantly promote short-chain fatty acids (SCFAs) production from waste activated sludge compared to traditional freezing/thawing treatment. The maximal production of SCFAs was 212 mg COD/g VSS with a shortened retention time of five days, and the potentially recovered carbon source, including SCFAs, soluble polysaccharides and proteins, reached 321 mg COD/g VSS, increased by 92.1 and 28.3% compared to sole freezing and thermal treatment. Both the solubilization and hydrolysis steps of WAS were accelerated, and the acid-producing microorganisms, such as Macellibacteroides, Romboutsia and Paraclostridium, were greatly enriched, with a total abundance of 13.9%, which was only 0.54% in control. Interestingly, the methane production was inhibited at a shortened retention time, resulting in SCFAs accumulation, whereas it was increased by 32.0% at a longer sludge retention time, providing a potential solution for energy recovery from WAS.
Department	中国科学院环境生物技术重点实验室 ; 中国科学院环境生物技术重点实验室
Keyword	GEN. NOV.
Document Type	期刊论文
Identifier	https://ir.rcees.ac.cn/handle/311016/47790
Collection	中国科学院环境生物技术重点实验室
Affiliation	1.Xian Univ Architecture & Technol, Sch Environm & Municipal Engn, Shaanxi Key Lab Environm Engn, Xian 710055, Peoples R China 2.Xian Univ Architecture & Technol, Key Lab Northwest Water Resource Environm & Ecol, Minist Educ, Xian 710055, Peoples R China 3.Environm Sci Acad Shaanxi Prov, Xian 710061, Peoples R China 4.Taiyuan Univ Technol, Coll Environm Sci & Engn, Taiyuan 030024, Peoples R China 5.Harbin Inst Technol Shenzhen, Sch Civil & Environm Engn, Shenzhen 518055, Peoples R China
Recommended Citation GB/T 7714	He, Zhang-Wei,Zou, Zheng-Shuo,Sun, Qian,et al. Freezing-low temperature treatment facilitates short-chain fatty acids production from waste activated sludge with short-term fermentation[J]. BIORESOURCE TECHNOLOGY,2022,347(0):126337.
APA	He, Zhang-Wei.,Zou, Zheng-Shuo.,Sun, Qian.,Jin, Hong-Yu.,Yao, Xing-Ye.,...&Wang, Aijie.(2022).Freezing-low temperature treatment facilitates short-chain fatty acids production from waste activated sludge with short-term fermentation.BIORESOURCE TECHNOLOGY,347(0),126337.
MLA	He, Zhang-Wei,et al."Freezing-low temperature treatment facilitates short-chain fatty acids production from waste activated sludge with short-term fermentation".BIORESOURCE TECHNOLOGY 347.0(2022):126337.

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