Gasification characteristics of hydrochar and pyrochar derived from sewage sludge

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 固体废弃物处理与资源化实验室

	Gasification characteristics of hydrochar and pyrochar derived from sewage sludge
	Gai, Chao; Chen, Mengjun; Liu, Tingting; Peng, Nana; Liu, Zhengang
刊名	ENERGY
	2016-10-15
卷号	113 页码:957-965
关键词	Hydrothermal carbonization Pyrolysis Biochar Waste biomass Hydrogen Steam gasification
英文摘要	Two types of the biochars, pyrochar and hydrochar derived from low temperature pyrolysis (LW) and hydrothermal carbonization (HTC) of sewage sludge were prepared and characterized. Their gasification properties were further experimentally evaluated. The results showed that the hydrochar was more hydrophobic than the pyrochar. The hydrochar was rich in nitrogen-containing functional groups and increased nickel, iron, alkali and alkaline earth metallic species compared to the raw sludge and pyrochar. It enhanced the interactions between the carbon surface and hydrogen bonding as well as gasification reactivity of the hydrochar, thus resulting in a higher hydrogen concentration and yield than the pyrochar under identical conditions. Additionally, the hydrochar had a more porous structure on the surface, facilitating the pores better accessible for condensable hydrocarbon molecules and thus improved the gas production and gasification efficiency. Although the energy recovery efficiency of LW-gasification method was higher than that of HTC-gasification approach, the total energy consumption during the HTC pretreatment combined with subsequent gasification was lower than the energy evolved in the corresponding product gas in most gasification conditions. This study demonstrates that the integration of HTC pretreatment and subsequent gasification has promising potential for hydrogen-rich syngas production from sewage sludge. (C) 2016 Elsevier Ltd. All rights reserved.
收录类别	SCI
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/35781]
专题	生态环境研究中心_固体废弃物处理与资源化实验室
推荐引用方式 GB/T 7714	Gai, Chao,Chen, Mengjun,Liu, Tingting,et al. Gasification characteristics of hydrochar and pyrochar derived from sewage sludge[J]. ENERGY,2016,113:957-965.
APA	Gai, Chao,Chen, Mengjun,Liu, Tingting,Peng, Nana,&Liu, Zhengang.(2016).Gasification characteristics of hydrochar and pyrochar derived from sewage sludge.ENERGY,113,957-965.
MLA	Gai, Chao,et al."Gasification characteristics of hydrochar and pyrochar derived from sewage sludge".ENERGY 113(2016):957-965.