生物炭
厌氧消化
甲烷
肥料
稻草
微生物种群生物学
化学
沼气
产量(工程)
木炭
制浆造纸工业
热解
消化(炼金术)
无氧运动
食品科学
农学
环境化学
细菌
生物
生态学
有机化学
材料科学
色谱法
冶金
工程类
生理学
无机化学
遗传学
作者
Ruixia Shen,Jing Yong,Jing Feng,Juan Luo,Jin Yu,Lixin Zhao
标识
DOI:10.1016/j.biortech.2019.122354
摘要
Anaerobic digestion (AD) is commonly used to treat biowastes, however, there are challenges in AD such as low methane yield, intermediate inhibition, and system instability. In this study, the effects of typical biochars on methane yield and microbial variation for AD with straw and cow manure were explored. The results indicated that cumulative methane yield with coconut shell biochar was higher than that without a biochar (319.44 vs. 282.77 mL/g VS). Interestingly, AD with biochars had a secondary methane yield peak, whereas control groups did not show this phenomenon. A suitable dosage (e.g., straw biochar of 2%) improved cumulative methane yield, but excessive addition (4%) could inhibit AD. AD system with biochar was more helpful for the growth of acetoclastic methanogens rather than hydrogenotrophic methanogens. The study demonstrated biochar can indeed enhance AD performance, and microbial community analyses could supply valuable information to elucidate the mechanism of enhancement.
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