Fungal Pretreatment of Albizia Chips for Enhanced Biogas Production by Solid-State Anaerobic Digestion

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• 作者：Xumeng Ge ; Tracie Matsumoto ; Lisa Keith ; Yebo Li
• 刊名：Energy & Fuels
• 出版年：2015
• 出版时间：January 15, 2015
• 年：2015
• 卷：29
• 期：1
• 页码：200-204
• 全文大小：247K
• ISSN：1520-5029

文摘

Albizia biomass is a forestry waste that has recently been studied for biogas production by solid-state anaerobic digestion (SS-AD). However, albizia chips showed low methane yields because of their recalcitrant structure. In this study, albizia chips were pretreated by Ceriporiopsis subvermispora, a white-rot fungus, for enhanced biogas production by SS-AD. After 48 days of fungal pretreatment, degradation of lignin in albizia chips was found to be around 24%, which was about 2 times that of cellulose and hemicellulose. Fungal pretreatment of albizia chips resulted in more than 4-fold increases in glucose and xylose yields during 72 h of enzymatic hydrolysis and a 3.7-fold increase in the cumulative methane yield during 58 days of SS-AD. Degradation of volatile solids, cellulose, and hemicellulose in pretreated albizia chips was more than 4 times as high as that in raw albizia chips during SS-AD. These experimental results indicated that fungal pretreatment of albizia chips with C. subvermispora is a highly effective strategy to improve the methane yield from this tropical wood waste via SS-AD.