Anaerobic digestion of organic fraction of municipal solid waste using a novel two-stage solid-liquid system

文献类型： 外文期刊

第一作者： Jiang, Hao

作者： Jiang, Hao;Wang, Shuangqing;Li, Baochen;Zhou, Hongjun;Li, Yeqing;Feng, Lu;Zhai, Limei;Pan, Junting;Li, Yeqing

作者机构：

关键词： Two-stage anaerobic digestion; Biofilm; Microbial succession; Acidogenic phase; Methanogenic phase

期刊名称：JOURNAL OF CLEANER PRODUCTION （ 影响因子：11.072； 五年影响因子：11.016 ）

ISSN： 0959-6526

年卷期： 2022 年 370 卷

页码：

收录情况： SCI

摘要： Organic fraction of municipal solid waste (OFMSW) has high volatile solid and moisture content, which is mainly treated via anaerobic digestion (AD). Since the composition of OFMSW is complicated and inconstant, it is difficult to maintain the AD process stable and effective. In this study, a novel two-stage AD system, including a tank-type acidogenic phase and a fixed-bed methanogenic phase, was implemented for OFMSW treatment to demonstrate the feasibility of the two-stage configuration. Results showed that 84% of potential CH4 yield was achieved and the methane content reached 77.83% on average in methanogenic phase. The acetoclastic methanogens, Methanosaeta and Methanosarcina, which can participate in direct interspecies electron transfer, were the dominant genera in solid digestate and the biofilm. The hydrogenotrophic methanogens, Meth-anospirillum and Methanoculleus, accounted for high proportions in liquid digestate. Our study provides a novel approach to treat OFMSW with less water consumption, high stability and efficiency.

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