NaOH Pretreatment of Wheat Straw at a Mesophilic Temperature: Effect on Hydrolysis and Loss of Organic Carbon
Hao Jiang, Yong Zeng, Hong Nie, Yeqing Li, Jiangtao Ding, Hongjun Zhou
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Institute of New Energy, State Key Laboratory of Heavy Oil Processing,
Beijing Key Laboratory of Biogas Upgrading Utilization, China University of Petroleum,
Beijing 102249, China
Submission date: 2016-02-24
Acceptance date: 2016-04-12
Publication date: 2016-07-22
Pol. J. Environ. Stud. 2016;25(4):1541–1548
A common approach to increasing biogas production is enhancing the hydrolysis of wheat straw by removing the lignin-using chemicals. However, partial organic matter will also dissolve into chemical solutions during pretreatment, which leads to the loss of organic matter for the anaerobic digestion process. The enzymatic hydrolysis of wheat straw and loss of total organic carbon increased with NaOH concentration and pretreatment time. The results suggest that when evaluating a pretreatment method, not just the hydrolysis but the loss of organic matter should be taken into consideration.