Enhanced enzymatic hydrolysis and hydrogen production of sugarcane bagasse pretreated by peroxyformic acid. (April 2021)

• Record Type: Journal Article
• Authors: Bu, Jie; Wang, Yu-Tao; Deng, Mao-Cheng; Zhu, Ming-Jun
• Is Part Of: Bioresource technology. Volume 326(2021)
• Publication Date: 2021-04
• Subjects: Sugarcane bagasse -- Peroxyformic acid -- Pretreatment -- Enzymolysis efficiency -- Dark fermentation; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2021.124751
• Languages: English
• ISSNs: 0960-8524

Abstract

Highlights: PA pretreatment with relatively low reagent concentration was established. Lignin was efficiently removed with high cellulose recovery. The pretreatment led to extensive hydrolysis of SCB. Thermoanaerobacterium was efficiently enriched for boosted H2 production. Abstract: Pretreatment plays a key role in biofuel production from lignocellulosic biomass. In this study, the main factors of peroxyformic acid (PA) pretreatment were optimized in the light of enzymolysis efficiency and composition analysis of pretreated sugarcane bagasse (SCB). Lignin was significantly removed (59.0%) and a complete saccharification level (103.6%) was obtained for the pretreated SCB with slight cellulose loss (9.2%) under the optimized pretreatment conditions. The effects of PA pretreatment on the structural characteristics of SCB were also studied and the digestibility of pretreated SCB was also evaluated by dark fermentative hydrogen production with an enriched anaerobic cellulolytic microbial consortium MC1. The hydrogen production increased by 195.5% (based on initial SCB) and the abundance of dominant hemicellulose-degradation genus Thermoanaerobacterium increased from 23.8% to 40.2% due to the remaining and accessible hemicellulose in PA pretreated SCB.