生物炭
厌氧消化
甲烷
碳纤维
化学
微生物
微生物联合体
环境化学
材料科学
热解
生物
细菌
有机化学
复合数
遗传学
复合材料
作者
Yeqing Li,Zhenxin Wang,Zhuoliang Jiang,Lu Feng,Junting Pan,Mingyu Zhu,Chengjie Ma,Zhangmu Jing,Hao Jiang,Hongjun Zhou,Hong-Mei Sun,Hongbin Liu
标识
DOI:10.1016/j.biortech.2021.126353
摘要
This study evaluated the effects of bio-based carbon materials on methane production by anaerobic digestion. The results showed that biochar and hydrochar can promote cumulative methane yield by 15% to 29%. However, there was no statistical significance (p > 0.05) between hydrochar and biochar produced at different temperature on methane production. 16S rRNA gene sequencing and bioinformatics analysis showed that biochar and hydrochar enriched microorganism that might participate in direct interspecies electron transfer (DIET) such as Pseudomonadaceae, Bacillaceae, and Clostridiaceae. The the surface properties of the modified biochar were characterized with BET, Raman, FTIR and XPS. Bio-based carbon materials with uniform dispersion provided a stable environment for the DIET of microorganisms and electrons are transferred through aromatic functional groups on the surface of materials. This study reveals bio-based carbon materials surface properties on methane production in anaerobic digestion and provides a new approach to recycling spent coffee grounds.
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