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Enhanced Methane Production from Anaerobic Co-Digestion of Wheat Straw and Herbal-Extraction Process Residues

文献类型： 外文期刊

作者： Xi, Yonglan 1 ; Chang, Zhizhou 1 ; Ye, Xiaomei 1 ; Du, Jing 1 ; Chen, Guangyin 1 ; Xu, Yueding 1 ;

作者机构： 1.Jiangsu Acad Agr Sci, East China Sci Observing & Expt Stn Dev & Utiliza, Minist Agr, Nanjing 210014, Jiangsu, Peoples R China; Jiangsu Acad Agr Sci, Lab Agr Wastes Treatment & Recycling, Inst Agr Resources & Environm, Nanjing 210014, Jiangsu, Peoples R China

关键词： Wheat straw;Herbal-extraction process residues;Anaerobic co-digestion;Methane

期刊名称：BIORESOURCES （ 影响因子：1.614； 五年影响因子：1.923 ）

ISSN： 1930-2126

年卷期： 2015 年 10 卷 4 期

页码：

收录情况： SCI

摘要： The efficient biosynthesis of methane from renewable biomass resources is discussed in this paper. Herbal-extraction process residues (HPR) are an excellent raw material for anaerobic digestion because of their abundant trace elements and fermentation stability. Anaerobic co-digestion of wheat straw with HPR was evaluated at HPR/wheat straw ratios (based on total solids (TS), of wheat straw) of 3%, 5%, and 10% with anaerobic sludge at 35 +/- 1 degrees C during 30-d anaerobic digestion. The best performance was achieved with 5% HPR added to the reactor, with cumulative methane production of 13,130 mL and cumulative methane yield of 260.5 mL/g TSadded, respectively. Cumulative methane production increased by 31.4% compared to the 9995 mL achieved in mono-digestion with wheat straw. Furthermore, higher activities of protease and total dehydrogenase and higher ATP levels were displayed during the co-digestion process. The high methane yield in this study demonstrates the great potential of co-digestion of renewable biomass as a feedstock for the economical production of methane.

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