Optimization of biohydrogen production from beer lees using anaerobic mixed bacteria

被引：63

作者：

Cui, Maojin ^{[1
]}

Yuan, Zhuliang ^{[1
]}

Zhi, Xiaohua ^{[1
]}

Shen, Jianquan ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Chem, BNLMS, New Mat Lab, Beijing 100190, Peoples R China

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2009年 / 34卷 / 19期

关键词：

Beer lees; Anaerobic mixed bacteria; Biohydrogen production; Acidic pretreatment; Ferrous iron concentration; Initial pH value; BIOAUGMENTED HYDROGEN-PRODUCTION; IRON CONCENTRATION; HOT-WATER; CELLULOSE; FERMENTATION; ENHANCEMENT; PH; HYDROLYSIS; COCULTURE; BAGASSE;

D O I：

10.1016/j.ijhydene.2009.08.022

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Beer lees are the main by-product of the brewing industry. Biohydrogen production from beer lees using anaerobic mixed bacteria was investigated in this study, and the effects of acidic pretreatment, initial pH value and ferrous iron concentration on hydrogen production were studied at 35 degrees C in batch experiments. The hydrogen yield was significantly enhanced by optimizing environmental factors such as hydrochloric acid (HCl) pretreatment of substrate, initial pH value and ferrous iron concentration. The optimal environmental factors of substrate pretreated with 2% HCl, pH = 7.0 and 113.67 mg/l Fe2+ were observed. A maximum cumulative hydrogen yield of 53.03 ml/g-dry beer lees was achieved, which was approximately 17-fold greater than that in raw beer lees. In addition, the degradation efficiency of the total reducing sugar, and the contents of hemicellulose, cellulose, lignin and metabolites are presented, which showed a strong dependence on the environmental factors. (C) 2009 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved.

引用

页码：7971 / 7978

页数：8

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