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

被引：11

作者：

You, Yang ^{[1
]}

Liu, Song ^{[1
]}

Wu, Bo ^{[1
]}

Wang, Yan-Wei ^{[1
]}

Zhu, Qi-Li ^{[1
]}

Qin, Han ^{[1
]}

Tan, Fu-Rong ^{[1
]}

Ruan, Zhi-Yong ^{[2
]}

Ma, Ke-Dong ^{[3
]}

Dai, Li-Chun ^{[1
]}

Zhang, Min ^{[1
]}

Hu, Guo-Quan ^{[1
]}

He, Ming-Xiong ^{[1
]}

机构：

[1] Minist Agr, Key Lab Dev & Applicat Rural Renewable Energy, Biomass Energy Technol Res Ctr, Biogas Inst, Sect 4-13, Chengdu 610041, Peoples R China

[2] CAAS, Inst Agr Resources & Reg Planning, Key Lab Microbial Resources, Minist Agr, Beijing 100081, Peoples R China

[3] Dalian Univ, Coll Environm & Chem Engn, Dalian 116622, Peoples R China

来源：

RSC ADVANCES | 2017年 / 7卷 / 07期

基金：

中国国家自然科学基金;

关键词：

CORN STOVER; TRICHODERMA-REESEI; SUGAR PRODUCTION; ACID; FERMENTATION; SACCHARIFICATION; OPTIMIZATION; FRACTIONS; METHANE; COST;

D O I：

10.1039/c6ra26288k

中图分类号：

O6 [化学];

学科分类号：

0703 ;

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.

引用

页码：3768 / 3779

页数：12

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