Lipase pretreatment enhances biochar-assisted anaerobic digestion of food waste

IF 3.2 4区生物学 Q2 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Biofuels Bioproducts & Biorefining-Biofpr Pub Date : 2024-11-15 DOI:10.1002/bbb.2705

Yue Ouyang, Ying Liu, Longjin Tian, Yongyu Ding, Guozhi Fan, Cheng Pan, Qunpeng Cheng

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Abstract

Anaerobic digestion is a promising technology for the treatment of food waste (FW) but it requires optimization to improve its performance. This study investigated whether combining the addition of biochar with lipase pretreatment could improve the anaerobic digestion of FW. The results showed that biochar stimulated the release of soluble substances, resulting in an increase in the methane yield of groups with added biochar by 16.24% to 19.36% in comparison with the group without biochar. Lipase pretreatment substantially shortened the fermentation time required to complete the anaerobic digestion, from 15 to 9 days. Lipase pretreatment further improved microbial abundance and promoted the enrichment of functional microbes in the anaerobic digestion of FW mediated by biochar. It also changed the methane production pathway from acetotrophic to hydrogenotrophic, thereby ensuring the stability of the anaerobic digestion system in the presence of a high ammonia nitrogen concentration.

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来源期刊

Biofuels Bioproducts & Biorefining-Biofpr 生物-能源与燃料

CiteScore

7.80

自引率

5.10%

发文量

122

审稿时长

4.5 months

期刊介绍： Biofuels, Bioproducts and Biorefining is a vital source of information on sustainable products, fuels and energy. Examining the spectrum of international scientific research and industrial development along the entire supply chain, The journal publishes a balanced mixture of peer-reviewed critical reviews, commentary, business news highlights, policy updates and patent intelligence. Biofuels, Bioproducts and Biorefining is dedicated to fostering growth in the biorenewables sector and serving its growing interdisciplinary community by providing a unique, systems-based insight into technologies in these fields as well as their industrial development.