Effect of biochar addition on microbial community and methane production during anaerobic digestion of food wastes: The role of minerals in biochar

被引：59

作者：

Sugiarto, Yusron ^{[1
,2
]}

Sunyoto, Nimas Mayang S. ^{[1
,2
]}

Zhu, Mingming ^{[1
]}

Jones, Isabelle ^{[1
]}

Zhang, Dongke ^{[1
]}

机构：

[1] Univ Western Australia, Ctr Energy M473, 35 Stirling Highway, Crawley, WA 6009, Australia

[2] Univ Brawijaya, Fac Agr Technol, Jalan Vet, Malang 65154, East Java, Indonesia

来源：

BIORESOURCE TECHNOLOGY | 2021年 / 323卷

基金：

澳大利亚研究理事会;

关键词：

Anaerobic digestion; Biochar; Methane; Microbial community; Minerals; INTERSPECIES ELECTRON-TRANSFER; TRACE-ELEMENT SUPPLEMENTATION; ZERO-VALENT IRON; PERFORMANCE; STAGE;

D O I：

10.1016/j.biortech.2020.124585

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

The effect of biochar addition on the microbial community and methane (CH4) production during anaerobic digestion was experimentally investigated, focusing on the role of minerals in biochar. The biochar was prepared from pine sawdust by pyrolysis at 650 degrees C and 900 degrees C, respectively, and a subsample was leached with citric acid. The cultures with the addition of biochar, leached biochar, Fe, and leached biochar combined with Fe, respectively, were placed in bench-scale bioreactors for anaerobic digestion. Daily biogas production was measured by volume displacement method and analysed for CH4 concentration, which allowed the cumulative CH4 yield (YM) and daily CH4 production rate (RM) to be determined. Culture samples were also taken daily for volatile fatty acids (VFAs) and microbial community analysis. Compared to the control without biochar addition, the addition of raw biochar significantly increased YM by 46.9% and RM by 43.0%, while leached biochar only increased the YM by 33.2% and RM by 18.2%, respectively. The Fe-containing minerals in biochar were found to enhance VFA degradation and increase population of Clostridia and Methanosaeta, improving the CH4 production.

引用

页数：10

共 29 条

[1] Influence of zero valent iron nanoparticles and magnetic iron oxide nanoparticles on biogas and methane production from anaerobic digestion of manure [J].