Magnetic biochar affects the metabolic pathway in methanogenesis of anaerobic digestion of food waste

被引：11

作者：

Gao, Mingxue ^{[1
,2
]}

Du, Pufang ^{[1
,2
]}

Zhi, Boyao ^{[1
,2
]}

Liu, Le ^{[1
,2
]}

Song, Yanling ^{[1
,2
]}

Xiang, Shumin ^{[1
,2
]}

Dai, Zhixiong ^{[1
,2
]}

Yang, Gaihe ^{[1
,2
]}

Wang, Xiaojiao ^{[1
,2
]}

Feng, Yongzhong ^{[1
,2
]}

机构：

[1] Northwest A&F Univ, Coll Agron, Yangling 712100, Shaanxi, Peoples R China

[2] Shaanxi Engn Res Ctr Circular Agr, Yangling, Shaanxi, Peoples R China

来源：

GLOBAL CHANGE BIOLOGY BIOENERGY | 2022年 / 14卷 / 05期

基金：

中国国家自然科学基金;

关键词：

anaerobic digestion; food waste; functional contribution; magnetic biochar; metabolism pathway; metagenome; MICROBIAL COMMUNITY; OPERATIONAL CONDITIONS; PROCESS PARAMETERS; ELECTRON-TRANSFER; ACTIVATED-SLUDGE; CO-DIGESTION; GENERATION; PYROLYSIS; PROMOTE; STRESS;

D O I：

10.1111/gcbb.12931

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

To alleviate pollution and promote clean energy production, food waste can be used to produce methane through anaerobic digestion (AD). In this study, wheat straw was used to produce biochar (BC) and magnetic biochar (MB) as additives for AD of food waste. MB2.5% and BC2.5% led to the highest methane production. The main action mechanism of the additives in AD was the change in environmental factors upon stimulating microorganisms to rapidly metabolize volatile fatty acids. The stimulation of microbial function increased the abundance of the methanogenesis pathways. Methanosarcina was the most dominant archaea in the four methanogenesis modules, and the microbial community changed more clearly with time than with treatment. This study is innovative in finding the effectiveness of BC and MB treatments attributed to the abundance of methanogenesis modules, especially MB2.5% treatment retained its advantage until the later stage of digestion in AD process.

引用

页码：572 / 584

页数：13

共 65 条

[1] Biostimulation of food waste anaerobic digestion supplemented with granular activated carbon, biochar and magnetite: A comparative analysis [J].