Enhanced Anaerobic Biogas Production From Wheat Straw by Herbal-Extraction Process Residues Supplementation
文献类型： 外文期刊
第一作者： Xi, Yonglan
作者： Xi, Yonglan;Ye, Xiaomei;Kong, Xiangping;Guo, Dong;Xiao, Qingbo;Xi, Yonglan;Ye, Xiaomei;Kong, Xiangping;Guo, Dong;Xiao, Qingbo;Xi, Yonglan;Liu, Yang;Ye, Xiaomei;Du, Jing
作者机构：
关键词： wheat straw; Chinese herbal medicine residues; anaerobic digestion; biogas; methane
期刊名称：FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY （ 影响因子：3.644； ）
ISSN： 2296-4185
年卷期： 2021 年 9 卷
页码：
收录情况： SCI
摘要： Trace metals are essential constituents of cofactors and enzymes and that their addition to anaerobic digesters increases methane production. Many trace elements are contained in herbal-extraction process residues (HPR). The present study concerns the effect of six kinds of HPR [Danshen root (Dr), Astragalus membranaceus (Am), Isatis root (Ir), Angelica sinensis (As), and Pseudo-ginseng (Pg)] that were used as additives, respectively, in the anaerobic digestion of wheat straw on biogas and methane production. The ratios of HPR residues/wheat straw [based on total solids (TS), of wheat straw] were 3, 5, and 10%, respectively. The digesters were at 37 +/- 1 degrees C of water bath during 30 days of anaerobic digestion. The results showed that HPR had significant effects on the anaerobic co-digestion. The highest biogas productivity was achieved when treated with 10% Pseudo-ginseng residues (PGR), which yielded 337 ml/g TS of biogas and 178 ml/g TS of methane. Cumulative production of biogas and methane increased by 28 and 37% compared to the production achieved in the control. These results suggest that PGR is an effective HPR to enhance the production of methane.
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