Evaluation on the Methane Production Potential of Wood Waste Pretreated with NaOH and Co-Digested with Pig Manure

文献类型： 外文期刊

第一作者： Li, Renfei

作者： Li, Renfei;Tan, Wenbing;Zhao, Xinyu;Dang, Qiuling;Xi, Beidou;Zhang, Xiaohui;Li, Renfei;Tan, Wenbing;Zhao, Xinyu;Dang, Qiuling;Xi, Beidou;Zhang, Xiaohui;Song, Qidao

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关键词： wood waste; biofuel; lignocellulosic biomass; NaOH pretreatment; anaerobic co-digestion

期刊名称：CATALYSTS （ 影响因子：4.146； 五年影响因子：4.399 ）

ISSN： 2073-4344

年卷期： 2019 年 9 卷 6 期

页码：

收录情况： SCI

摘要： Wood waste generated during the tree felling and processing is a rich, green, and renewable lignocellulosic biomass. However, an effective method to apply wood waste in anaerobic digestion is lacking. The high carbon to nitrogen (C/N) ratio and rich lignin content of wood waste are the major limiting factors for high biogas production. NaOH pre-treatment for lignocellulosic biomass is a promising approach to weaken the adverse effect of complex crystalline cellulosic structure on biogas production in anaerobic digestion, and the synergistic integration of lignocellulosic biomass with low C/N ratio biomass in anaerobic digestion is a logical option to balance the excessive C/N ratio. Here, we assessed the improvement of methane production of wood waste in anaerobic digestion by NaOH pretreatment, co-digestion technique, and their combination. The results showed that the methane yield of the single digestion of wood waste was increased by 38.5% after NaOH pretreatment compared with the untreated wood waste. The methane production of the co-digestion of wood waste and pig manure was higher than that of the single digestion of wood waste and had nonsignificant difference with the single-digestion of pig manure. The methane yield of the co-digestion of wood waste pretreated with NaOH and pig manure was increased by 75.8% than that of the untreated wood waste. The findings indicated that wood waste as a sustainable biomass source has considerable potential to achieve high biogas production in anaerobic digestion.

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