N-doped carbon quantum dots enhance anaerobic digestion under light condition: The performances and potential mechanisms

Qiang Liu,Shuo Chen,Haoyu Zhang,Lu Feng,Hongjun Zhou,Junting Pan,Yeqing Li,Chunming Xu

Chemical Engineering Journal（2023）

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摘要

•NCQD promoted the cumulative CH4 yield in photo-AD system under visible-light condition.•In photo-AD with NCQD, the dominant strain was Methanosarciniales with an abundance of 69.0%.•In photo-AD with NCQD, the ROS was not sufficient to cause damage to microorganisms.•NCQD promoted electron transfer and provided photoelectrons for microorganisms in photo-AD.•NCQD mainly promoted methanogenesis by providing photoelectrons.

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关键词

Photo-anaerobic digestion,N-doped carbon quantum dots,Microbial community,Methanogenesis,Quantitative PCR

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