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Title: Review and perspectives of enhanced volatile fatty acids production from acidogenic fermentation of lignocellulosic biomass wastes
Authors: Sun, Jiachen
Zhang, Le 
Loh, Kai-Chee 
Keywords: Acidogenic fermentation
Enhancing strategies
Lignocellulosic biomass wastes
Resource recovery
Volatile fatty acids
Issue Date: 2-Aug-2021
Publisher: Springer Science and Business Media Deutschland GmbH
Citation: Sun, Jiachen, Zhang, Le, Loh, Kai-Chee (2021-08-02). Review and perspectives of enhanced volatile fatty acids production from acidogenic fermentation of lignocellulosic biomass wastes. Bioresources and Bioprocessing 8 (1) : 68. ScholarBank@NUS Repository.
Rights: Attribution 4.0 International
Abstract: 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·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. [Figure not available: see fulltext.] © 2021, The Author(s).
Source Title: Bioresources and Bioprocessing
ISSN: 2197-4365
DOI: 10.1186/s40643-021-00420-3
Rights: Attribution 4.0 International
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