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

Content Provider	Royal Society of Chemistry (RSC)
Author	He, Ming-Xiong Ma, Ke-Dong Liu, Song Wu, Bo Zhu, Qi-Li Dai, Li-Chun Zhang, Min Ruan, Zhi-Yong Qin, Han Wang, Yan-Wei Tan, Fu-Rong You, Yang Hu, Guo-Quan
Copyright Year	2017
Abstract	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.
Starting Page	3768
Ending Page	3779
Page Count	12
File Format	HTM / HTML PDF
ISSN	20462069
Volume Number	7
Issue Number	7
Journal	RSC Advances
DOI	10.1039/c6ra26288k
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Hemicellulose Ethanol Cellulosic ethanol Cellulose Behnken Response surface methodology Glucose Nitrogen Lignocellulosic biomass Hydrolysis Xylose Box\u2013Behnken design Zymomonas mobilis
Content Type	Text
Resource Type	Article
Subject	Chemistry Chemical Engineering

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