水热液化
废水
厌氧消化
原材料
制浆造纸工业
甲烷
生物量(生态学)
微生物联合体
化学
无氧运动
废物管理
微生物种群生物学
污水处理
生物燃料
环境科学
环境化学
环境工程
微生物
生态学
生物
细菌
生理学
遗传学
有机化学
工程类
作者
Ruirui Li,Dianlei Liu,Yuanhui Zhang,Giovana Tommaso,Buchun Si,Zhidan Liu,Na Duan
标识
DOI:10.1016/j.scitotenv.2022.155659
摘要
Hydrothermal liquefaction (HTL) is a cost-effective and environment-friendly technology for using biomass to produce bio-crude oil. The critical challenge of HTL is its complicated aqueous product containing high concentrations of organics and diverse toxicants. This paper reports the continuous anaerobic digestion of raw and zeolite-adsorbed Chlorella HTL wastewater using up-flow anaerobic sludge bed reactors. The bio-methane production capacity, total carbon distribution and microbial response were investigated. The anaerobic process was severely suppressed when more than 20% raw wastewater was fed; while it showed essentially improved performance till 60% pre-treated wastewater was added. Produced methane contained 17.3% of the total carbon in feedstock, which was comparable with the value (16.7%) when 25% of raw wastewater was added. The metagenomic analysis revealed distinct microbial community structures in different stages and feedstock shifts. The abundance of functional genes was consistent with anaerobic digester performance.
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