Effect of Organic Acid on Enzymatic Hydrolysis and Cellulosic Ethanol Fermentation
[1]HAN Xiuli,ZHAO Haohao,LU Feng,et al.Effect of Organic Acid on Enzymatic Hydrolysis and Cellulosic Ethanol Fermentation[J].Journal of Zhengzhou University (Engineering Science),2015,36(06):5-.[doi:10.3969 / j. issn.1671 -6833.2015.06.002]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
36卷
Number of periods:
2015 06
Page number:
5-
Column:
Public date:
2015-12-25
- Title:
- Effect of Organic Acid on Enzymatic Hydrolysis and Cellulosic Ethanol Fermentation
- Keywords:
- cellulosic ethanol; enzymatic hydrolysis; fermentation; formic acid; acetic acid; propanoic acid
- CLC:
- X703.1
- DOI:
- 10.3969 / j. issn.1671 -6833.2015.06.002
- Abstract:
- The cellulosic ethanol wastewater was first treated by anaerobic digestion ( methane fermentation),and then the anaerobic digestion liquid was used as burden water on cellulosic ethanol fermentation,so that re-use of cellulosic ethanol wastewater could be realized. The small molecule organic acids in the anaerobic efflu-ent,mainly formic acid,acetic acid and propanoic acid,were potential inhibitors of ethanol fermentation. Theeffects of organic acids on enzymatic hydrolysis and yeast fermentation of cellulose were studied. The resultsshowed that the potential inhibitory effects of formic acid,acetic acid and propanoic acid on enzymatic hydrol-ysis could be avoided by controlling the medium pH.The inhibitory concentrations of formic acid,acetic acidand propanoic acid on yeast fermentation were 1.6,3.0 and 3.0 g/L,respectively.
- References:
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