Bio-ethanol production by Zymomonas mobilis using pretreated dairy manure as a carbon and nitrogen source

文献类型： 外文期刊

第一作者： You, Yang

作者： You, Yang;Liu, Song;Wu, Bo;Wang, Yan-Wei;Zhu, Qi-Li;Qin, Han;Tan, Fu-Rong;Dai, Li-Chun;Zhang, Min;Hu, Guo-Quan;He, Ming-Xiong;Ruan, Zhi-Yong;Ma, Ke-Dong

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期刊名称：RSC ADVANCES （ 影响因子：3.361； 五年影响因子：3.39 ）

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收录情况： SCI

摘要： Dairy manure contains high levels of cellulose, hemicellulose and a nitrogen source. These properties make dairy manure a potential biomass source for ethanol production. In this study, a dilute NaOH pretreatment and enzymatic hydrolysis were carried out for the degradation of lignocellulose from dairy manure. The response surface method and Box-Behnken design were first applied in order to optimize the NaOH pretreatment. Under the optimization conditions, 21.14 g L-1 of glucose and 9.48 g L-1 of xylose were obtained from continuous enzymolysis. The maximum ethanol concentration achieved reached 10.55 g L-1 when using ethanologenic Zymomonas mobilis without an additional nitrogen source. This produced a 71.91% ethanol yield from manure hydrolysate medium. These results demonstrate the economic benefits of using nitrogen from a dairy manure source for balancing the C/N ratio, without the need for an additional nitrogen source. The results from this study could extend beyond cellulosic ethanol for the production of other chemicals.

分类号： O6

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