Saponification with calcium enhanced methane yield in anaerobic digestion of fat, oil, and grease: The essential role of calcium

doi:10.1016/j.renene.2022.06.055

	Saponification with calcium enhanced methane yield in anaerobic digestion of fat, oil, and grease: The essential role of calcium
	Wu, Kun 1; Xu, Weijia 1; Lu, Jian2 ; Wang, Chun 1; Liao, Jinhui 1; He, Xia 1
发表期刊	RENEWABLE ENERGY
ISSN	0960-1481
	2022-08-01
卷号	195 页码:1103-1112
关键词	Anaerobic digestion FOG Saponification Methane yield Calcium source Ca2+/LCFAs
DOI	10.1016/j.renene.2022.06.055
通讯作者	He, Xia([email protected])
英文摘要	Though saponification between calcium and fat, oil, and grease (FOG) could reduce inhibition caused by long chain fatty acids (LCFAs) in anaerobic digestion of FOG, the role of calcium in methane recovery is not well understood. In this study, different calcium sources (CaSO4, Ca(OH)(2) and CaCl2) and mole ratios of Ca2+/LCFAs (0.25, 0.5 and 1) were chosen to investigate the role of calcium in anaerobic digestion of FOG. Compared to CaCl2/CaSO4, Ca(OH)(2) was the most suitable calcium source due to the highest fraction of saponification in the calcium soaps as well as the 22% increment of methane production. For the reactors using CaCl2/CaSO4 as calcium source, Ca2+/LCFAs = 0.25 is preferred to enhance methane production, and the adsorption of the released LCFAs from calcium soaps onto biomass might be the primary pattern of LCFA degradation. Regarding the reactors using Ca(OH)(2) as calcium source, Ca2+/ LCFAs = 0.5 is beneficial for the enhancement of methane yield, and the combination of bio-aggregation on calcium soap and adsorption of released LCFAs on biomass may be the explanation for the relatively high methane production. Different calcium source and Ca2+/LCFAs could primarily affect the composition of syntrophs and methanogens, leading to different methane recovery from anaerobic digestion of FOG. (c) 2022 Elsevier Ltd. All rights reserved.
资助机构	One Hundred Talents Program of Guangxi Autonomous Region
收录类别	SCI
语种	英语
关键词[WOS]	EXTRACELLULAR POLYMERIC SUBSTANCES ; FOG DEPOSIT FORMATION ; CO-DIGESTION ; WASTE-WATER ; GEN. NOV. ; MECHANISMS ; KINETICS ; SLUDGE ; ENERGY ; ACIDS
研究领域[WOS]	Science & Technology - Other Topics ; Energy & Fuels
WOS记录号	WOS:000830769100011
引用统计	被引频次：6[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.yic.ac.cn/handle/133337/31623
专题	中国科学院海岸带环境过程与生态修复重点实验室中国科学院海岸带环境过程与生态修复重点实验室_海岸带环境过程实验室
通讯作者	He, Xia
作者单位	1.Guilin Univ Technol, Coll Environm Sci & Engn, Guilin 541006, Guangxi, Peoples R China 2.Chinese Acad Sci, Yantai Inst Coastal Zone Res YIC, CAS Key Lab Coastal Environm Proc & Ecol Remediat, Shandong Key Lab Coastal Environm Proc,YICCAS, Yantai 264003, Shandong, Peoples R China
推荐引用方式 GB/T 7714	Wu, Kun,Xu, Weijia,Lu, Jian,et al. Saponification with calcium enhanced methane yield in anaerobic digestion of fat, oil, and grease: The essential role of calcium[J]. RENEWABLE ENERGY,2022,195:1103-1112.
APA	Wu, Kun,Xu, Weijia,Lu, Jian,Wang, Chun,Liao, Jinhui,&He, Xia.(2022).Saponification with calcium enhanced methane yield in anaerobic digestion of fat, oil, and grease: The essential role of calcium.RENEWABLE ENERGY,195,1103-1112.
MLA	Wu, Kun,et al."Saponification with calcium enhanced methane yield in anaerobic digestion of fat, oil, and grease: The essential role of calcium".RENEWABLE ENERGY 195(2022):1103-1112.