Review and perspectives of enhanced volatile fatty acids production from acidogenic fermentation of lignocellulosic biomass wastes

被引:48
|
作者
Sun, Jiachen [1 ]
Zhang, Le [2 ,3 ]
Loh, Kai-Chee [1 ,2 ,3 ]
机构
[1] Natl Univ Singapore, Dept Chem & Biomol Engn, 4 Engn Dr 4, Singapore 117576, Singapore
[2] Natl Univ Singapore, NUS Environm Res Inst, 1 Create Way,Create Tower 15-02, Singapore 138602, Singapore
[3] Energy & Environm Sustainabil Megac E2S2 Phase II, Campus Res Excellence & Technol Enterprise CREATE, 1 CREATE Way, Singapore 138602, Singapore
基金
新加坡国家研究基金会;
关键词
Volatile fatty acids; Acidogenic fermentation; Enhancing strategies; Lignocellulosic biomass wastes; Resource recovery; ANAEROBIC CO-DIGESTION; ORGANIC LOADING RATE; MICROBIAL COMMUNITY; FOOD WASTE; METHANE PRODUCTION; BIOGAS PRODUCTION; SEWAGE-SLUDGE; YARD WASTE; TECHNOECONOMIC ANALYSIS; CHEMICAL-COMPOSITION;
D O I
10.1186/s40643-021-00420-3
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
Lignocellulosic biomass wastes are abundant resources that are usually valorized for methane-rich biogas via anaerobic digestion. Conversion of lignocellulose into volatile fatty acids (VFA) rather than biogas is attracting attention due to the higher value-added products that come with VFA utilization. This review consolidated the latest studies associated with characteristics of lignocellulosic biomass, the effects of process parameters during acidogenic fermentation, and the intensification strategies to accumulate more VFA. The differences between anaerobic digestion technology and acidogenic fermentation technology were discussed. Performance-enhancing strategies surveyed included (1) alkaline fermentation; (2) co-digestion and high solid-state fermentation; (3) pretreatments; (4) use of high loading rate and short retention time; (5) integration with electrochemical technology, and (6) adoption of membrane bioreactors. The recommended operations include: mesophilic temperature (thermophilic for high loading rate fermentation), C/N ratio (20-40), OLR (< 12 g volatile solids (VS)/(L center dot d)), and the maximum HRT (8-12 days), alkaline fermentation, membrane technology or electrodialysis recovery. Lastly, perspectives were put into place based on critical analysis on status of acidogenic fermentation of lignocellulosic biomass wastes for VFA production.
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页数:21
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