Ultrasonication as anaerobic digestion pretreatment to improve sewage sludge methane production: Performance and microbial characterization

Kai Zhao,Ge Song,Chaojie Lu, Jiaqi Wang,Ruiping Liu,Chengzhi Hu

Journal of Environmental Sciences（2023）

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摘要

•Compared US efficiency in CH4 yield enhancement toward three different sludges.•US accelerates sludge disintegration and CH4 yield at high specific energy input.•US-pretreated sludge feeding enhances microbial diversity in an anaerobic digester.•US improves more CH4 yield of A2O-sludge than A2O-MBR- and AO-AO- sludge.

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关键词

Ultrasonication,Waste activated sludge,Anaerobic digestion,CH4 production,Microbial community

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