Enrichment of waste sewage sludge for enhancing methane production from cellulose

被引：19
|
作者：
Zhu, Qili [1 ,2 ]
Dai, Lichun [2 ]
Wang, Yanwei [2 ]
Tan, Furong [2 ]
Chen, Chenghan [2 ]
He, Mingxiong [2 ]
Maeda, Toshinari [1 ]
机构：
[1] Kyushu Inst Technol, Grad Sch Life Sci & Syst Engn, Dept Biol Funct Engn, 2-4 Hibikino, Kitakyushu, Fukuoka 8080196, Japan
[2] Minist Agr & Rural Affairs, Biogas Inst, Biomass Energy Technol Res Ctr, Key Lab Dev & Applicat Rural Renewable Energy Min, 4-13 Renmin South Rd, Chengdu 610041, Peoples R China
来源：
BIORESOURCE TECHNOLOGY | 2021年 / 321卷
基金：
日本科学技术振兴机构;
关键词：
Enrichment; Waste sewage sludge; Cellulose; Methane production; Microbial communities; ANAEROBIC-DIGESTION; BIODEGRADABILITY; LIGNOCELLULOSE; FERMENTATION; OPTIMIZATION; ENHANCEMENT; DIVERSITY; HYDROGEN; BIOMASS; STRAW;
D O I：
10.1016/j.biortech.2020.124497
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
Low ability of waste sewage sludge to degrade cellulose is observed due to its less cellulolytic bacteria content. The enrichment of sewage sludge in the absence or presence of carboxymethylcellulose (CMC) was conducted to improve anaerobic digestion (AD) of cellulose in this study. Compared to initial sewage sludge (IS), enriched sludge without CMC addition (ES) displayed 69.81% higher CH4 yield and about 1.7-fold greater anaerobic biodegradation of cellulose. In particular, bacterial and archaeal diversities in samples inoculated with ES were significantly altered, with Ruminiclostridium and Methanobacterium as the predominant genera. Enriched sludge with CMC addition (ESC) displayed enhanced methane production at initial cellulose fermentation but showed no distinct difference compared with the control after incubation 24 days. These findings suggest that enrichment of waste sewage sludge without CMC addition is more beneficial for promoting AD of cellulose, providing a novel insight for efficient energy utilization of lignocellulosic wastes.
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页数：9
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