Effects of temperature on hydrolysis performance and short-chain fatty acids production during thermophilic micro-aerobic fermentation of waste activated sludge

doi:10.1080/19443994.2015.1056838

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 中国科学院环境生物技术重点实验室

	Effects of temperature on hydrolysis performance and short-chain fatty acids production during thermophilic micro-aerobic fermentation of waste activated sludge
	Yang, Chunxue; He, Zhangwei; Guo, Zechong; Zhou, Aijuan; Wang, Aijie; Liu, Wenzong
刊名	DESALINATION AND WATER TREATMENT
	2016-06-14
卷号	57 期号:28 页码:13183-13189
关键词	Hydrolysis Waste Activated Sludge (Was) Temperature Short-chain Fatty Acids (Scfas) Thermophilic Micro-aerobic Fermentation
DOI	10.1080/19443994.2015.1056838
英文摘要	Rapid hydrolysis of waste activated sludge (WAS) can be achieved by improving activities of extracellular enzymes under proper temperature conditions. As short-chain fatty acids (SCFAs) accumulation is always consumed by methanogens under anaerobic conditions, and considering that the micro-aerobic condition can inhibit the activities of methanogens, in this study, effects of temperature (55-75 degrees C) on thermophilic micro-aerobic fermentation of WAS were investigated. Results showed that the highest soluble chemicaloxygen demand (SCOD) yield was obtained at 60 degrees C (4,407 +/- 80mg/L, 36h), 2.0 times higher than that obtained at 75 degrees C (2,180 +/- 40mg/L, 36h), the corresponding hydrolysis rate was 0.6689d(-1). The highest SCFAs yield was 2,928 +/- 12mgCOD/L at 60 degrees C and 36h, 4.9 times higher than that obtained at 75 degrees C (594 +/- 10mgCOD/L, 36h). The analysis of SCFAs composition showed that acetic acid (HAc) accounted for the most percentage (>40%), followed by n-valeric (n-HVa) (20-25%), and propionic acids (HPr) (10-15%). Total suspended solids removal efficiency reached 18.7% after 192-h fermentation at 60 degrees C. These results suggested that the optimal thermophilic micro-aerobic conditions for WAS hydrolysis and SCFAs accumulation from WAS were 60 degrees C and 36-h fermentation time.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/36119]
专题	生态环境研究中心_中国科学院环境生物技术重点实验室
推荐引用方式 GB/T 7714	Yang, Chunxue,He, Zhangwei,Guo, Zechong,et al. Effects of temperature on hydrolysis performance and short-chain fatty acids production during thermophilic micro-aerobic fermentation of waste activated sludge[J]. DESALINATION AND WATER TREATMENT,2016,57(28):13183-13189.
APA	Yang, Chunxue,He, Zhangwei,Guo, Zechong,Zhou, Aijuan,Wang, Aijie,&Liu, Wenzong.(2016).Effects of temperature on hydrolysis performance and short-chain fatty acids production during thermophilic micro-aerobic fermentation of waste activated sludge.DESALINATION AND WATER TREATMENT,57(28),13183-13189.
MLA	Yang, Chunxue,et al."Effects of temperature on hydrolysis performance and short-chain fatty acids production during thermophilic micro-aerobic fermentation of waste activated sludge".DESALINATION AND WATER TREATMENT 57.28(2016):13183-13189.