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Methane Production from Rice Straw Hydrolysate Treated with Dilute Acid by Anaerobic Granular Sludge

文献类型： 外文期刊

作者： Cheng, Jing-Rong 1 ; Liu, Xue-Ming 1 ; Chen, Zhi-Yi 1 ;

作者机构： 1.Minist Agr, Guangdong Key Lab Agr Prod Proc, Sericultural & Agrifood Res Inst, Guangdong Acad Agr Sci,Key Lab Funct Foods, Guangzhou 510610, Guangdong, Peoples R China

2.Chinese Acad Sci, Guangzhou Inst Energy Convers, 133 Yihenglu, Guangzhou 510640, Guangdong, Peoples R China

关键词： Methane production;Granular sludge;DSARSH;Sulfate;Anaerobic digestion

期刊名称：APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY （ 影响因子：2.926； 五年影响因子：2.685 ）

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收录情况： SCI

摘要： The traditional anaerobic digestion process of straw to biogas faces bottlenecks of long anaerobic digestion time, low digestion rate, less gas production, etc., while straw hydrolysate has the potential to overcome these drawbacks. In this study, the dilute sulphuric acid-treated hydrolysate of rice straw (DSARSH) containing high sulfate was firstly proved to be a feasible substrate for methane production under mesophilic digestion by granular sludge within a short digestion time. Batch anaerobic digestion process was operated under different initial chemical oxygen demand (COD) values at temperature of 37 A degrees C with the pH of 8.5. Among the initial COD values ranging from 3000 to 11,000 mg/L, 5000 mg/L was proved to be the most appropriate considering high COD removal efficiency (94.17 A +/- 1.67 %), CH4 content (65.52 A +/- 3.12 %), and CH4 yield (0.346 A +/- 0.008 L-CH4/g COD (removed)) within 120 h. Furthermore, when the studied system operated at the initial COD of 5000 mg/L, the sulfate removal ratio could reach 56.28 %.

  • 相关文献

[1]A Novel Mesophilic Anaerobic Digestion System for Biogas Production and In Situ Methane Enrichment from Coconut Shell Pyroligneous. Cheng, Jing-Rong,Liu, Xue-Ming,Chen, Zhi-Yi,Zhang, You-Sheng,Zhang, Ye-Hui,Cheng, Jing-Rong.

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