Effects of thermal and thermal-alkaline pretreatments on continuous anaerobic sludge digestion: Performance, energy balance and, enhancement mechanism

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 水污染控制实验室

	Effects of thermal and thermal-alkaline pretreatments on continuous anaerobic sludge digestion: Performance, energy balance and, enhancement mechanism
	Chen, Hong; Yi, Hao; Li, Hechao; Guo, Xuesong; Xiao, Benyi
刊名	RENEWABLE ENERGY
	2020-03
卷号	147 页码:2409-2416
关键词	Continuous anaerobic sludge digestion Energy balance Enhancement mechanism Thermal pretreatment Thermal-alkaline pretreatment
ISSN号	0960-1481
英文摘要	The effects of thermal pretreatment (TP) and thermal-alkaline pretreatment (TAP) on a continuous mesophilic anaerobic digestion (AD) of sewage sludge were investigated. Both TP (134 +/- 1 degrees C and 30 min) and TAP (pH 12, 134 +/- degrees C and 30 min) released, hydrolyzed, and mineralized the organic matter of sludge, but TAP provided superior results. The methane yields of thermal pretreated sludge (TPS) and thermal-alkaline pretreated sludge (TAPS) were 1.88 times and 2.20 times that of raw sludge (RS), respectively. Moreover, the average methane content of biogas produced from TAPS (73.4 +/- 3.4%) was higher than that from TPS (69.1 +/- 3.1%) and from RS (67.2 +/- 2.9%). The energy balance of the total process with TAP was the highest (4.326 kJ/g VS) and that of the RS AD was the lowest (2.045 kJ/g VS). Both pretreatments enhanced the sludge hydrolysis with TAP presenting higher efficiency, and shifted the rate-limiting step of the anaerobic sludge digestion from hydrolysis to methanogenesis. (C) 2019 Elsevier Ltd. All rights reserved.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/45033]
专题	生态环境研究中心_水污染控制实验室
推荐引用方式 GB/T 7714	Chen, Hong,Yi, Hao,Li, Hechao,et al. Effects of thermal and thermal-alkaline pretreatments on continuous anaerobic sludge digestion: Performance, energy balance and, enhancement mechanism[J]. RENEWABLE ENERGY,2020,147:2409-2416.
APA	Chen, Hong,Yi, Hao,Li, Hechao,Guo, Xuesong,&Xiao, Benyi.(2020).Effects of thermal and thermal-alkaline pretreatments on continuous anaerobic sludge digestion: Performance, energy balance and, enhancement mechanism.RENEWABLE ENERGY,147,2409-2416.
MLA	Chen, Hong,et al."Effects of thermal and thermal-alkaline pretreatments on continuous anaerobic sludge digestion: Performance, energy balance and, enhancement mechanism".RENEWABLE ENERGY 147(2020):2409-2416.