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Energy Sources, Part A: Recovery, Utilization, and Environmental Effects Volume 41, 2019 - Issue 1
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Articles

Effect of agitation pretreatment on anaerobic digestion of swine manure

Yuan YangKey Laboratory of Coal Gasification and Energy Chemical Engineering of Ministry of Education, East China University of Science and Technology, Shanghai, People’s Republic of ChinaView further author information
,
Guang ChengKey Laboratory of Coal Gasification and Energy Chemical Engineering of Ministry of Education, East China University of Science and Technology, Shanghai, People’s Republic of ChinaView further author information
,
Yaoyue LiKey Laboratory of Coal Gasification and Energy Chemical Engineering of Ministry of Education, East China University of Science and Technology, Shanghai, People’s Republic of ChinaView further author information
,
Tenghao WangKey Laboratory of Coal Gasification and Energy Chemical Engineering of Ministry of Education, East China University of Science and Technology, Shanghai, People’s Republic of ChinaView further author information
,
Fei LiKey Laboratory of Coal Gasification and Energy Chemical Engineering of Ministry of Education, East China University of Science and Technology, Shanghai, People’s Republic of ChinaView further author information
&
Weiwei HuangKey Laboratory of Coal Gasification and Energy Chemical Engineering of Ministry of Education, East China University of Science and Technology, Shanghai, People’s Republic of ChinaCorrespondence[email protected]
View further author information
Pages 122-128 | Published online: 05 Oct 2018
 
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ABSTRACT

This study evaluated the effect of mechanical agitation pretreatment on anaerobic digestion (AD) of swine manure (SM). The results showed a remarkable increase in soluble polysaccharides, soluble proteins, and soluble chemical oxygen demand (SCOD) by 82.42%, 121.17%, and 114.89%, respectively, after the SM being agitated for 22 h. No improvement in the volatile fatty acids (VFAs) yield was observed during the agitation pretreatment. Apparently, agitation significantly accelerated the hydrolysis of SM, while it did not seem to enhance the acidification step. Batch AD experiments showed an improved accumulative methane yield by 77.89% with the pretreated SM compared to raw SM.

Additional information

Funding

This work is financially supported by National Natural Science Foundation of China (51708222), China Postdoctoral Science Foundation (2017M611475) and the Fundamental Research Funds for the Central Universities (222201714037).

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