Direct ethanol production from dextran industrial waste water by Zymomonas mobilis

文献类型: 外文期刊

第一作者: He, Ming-xiong

作者: He, Ming-xiong;Qin, Han;Tan, Fu-rong;Wu, Bo;Shui, Zong-xia;Dai, Li-chun;Hu, Qi-chun;He, Ming-xiong;Yin, Xiao-bo;Hu, Qi-chun;Ruan, Zhi-yong

作者机构:

关键词: Ethanol;Dextran Industrial Waste Water;Zymomonas mobilis;Batch Fermentation;Kinetic Parameters;Semi-continuous Fermentation

期刊名称:KOREAN JOURNAL OF CHEMICAL ENGINEERING ( 影响因子:3.309; 五年影响因子:2.634 )

ISSN:

年卷期:

页码:

收录情况: SCI

摘要: The direct production of ethanol from dextran industrial waste water was investigated by using Zymomonas mobilis via batch and semi-continuous fermentation mode. In batch fermentation, pretreated waste water (unsterilized and sterilized), pH value (3.8 and 6.0), and Mg2+ (with and without) was compared with OD 600, sugar and ethanol concentration. After 24 h fermentation, sugar in the dextran waste water was almost exhausted, and the amount of ethanol accumulated reached 24.33-29.92 g/l, which is nearly 99% of the theoretical yield of ethanol. Kinetic parameters of Z. mobilis in batch fermentation were also investigated. The raw dextran waste water was also used in semi-continuous fermentation. After 48 h fermentation, the production of ethanol was 28.65 g/l. These results indicated that dextran waste water may be used as a candidate substrate and Z. mobilis could convert the raw material into ethanol directly.

分类号: O69

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