Enhancing Methane Production in Anaerobic Digestion of Food Waste Using Co-Pyrolysis Biochar Derived from Digestate and Rice Straw

被引：0

作者：

Yang, Qinyan ^{[1
]}

Liu, Huanran ^{[1
]}

Liu, Li ^{[1
]}

Yan, Zhen ^{[2
]}

Chui, Chunmeng ^{[3
]}

Yang, Niannian ^{[3
]}

Wang, Chen ^{[1
]}

Shen, Guoqing ^{[1
,4
]}

Chen, Qincheng ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, Sch Agr & Biol, Shanghai 200240, Peoples R China

[2] Shanghai Pudong Dev Grp Co Ltd, Shanghai 200127, Peoples R China

[3] Shanghai Liming Resources Reuse Co Ltd, Shanghai 201209, Peoples R China

[4] Natl Forestry & Grassland Adm, Minist Sci & Technol, Shanghai Yangtze River Delta Ecoenvironm Change &, Shanghai Urban Ecosyst Res Stn, 800 Dongchuan Rd, Shanghai 200240, Peoples R China

来源：

MOLECULES | 2025年 / 30卷 / 08期

基金：

中国国家自然科学基金; 上海市自然科学基金;

关键词：

anaerobic digestion; biochar; co-pyrolysis; waste recovery; methane production; INTERSPECIES ELECTRON-TRANSFER; AQUEOUS-SOLUTION; SEWAGE-SLUDGE; REMOVAL; AMMONIA; DEGRADATION; BOTTLENECKS; SEQUENCES; NITROGEN; BIOMASS;

D O I：

10.3390/molecules30081766

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Anaerobic digestion (AD) is a preferred method for food waste (FW) treatment due to its sustainability and potential for production of renewable bioenergy. However, the accumulation of volatile fatty acids (VFAs) and ammonia often destabilizes the AD process, and managing the digestate byproduct poses additional challenges. This study investigates the use of co-pyrolysis biochar synthesized from digestate and rice straw (DRB) to enhance methane production and AD efficiency. DRB addition increased cumulative methane yield by 37.1%, improved VFA conversion efficiency, and achieved a 42.3% higher NH3-N-removal rate compared to the control group. The COD-removal rate was 68.7% throughout the process. Microbial analysis revealed that DRB selectively enriched Fastidiosipila and Methanosarcina, promoting direct interspecies electron transfer (DIET) and methane yield. These findings highlight DRB's potential to enhance AD efficiency and support closed-loop resource utilization.

引用

页数：17

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