期刊
BIORESOURCE TECHNOLOGY
卷 101, 期 13, 页码 4959-4964出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2009.11.010
关键词
Simultaneous saccharification and fermentation; Fed-batch; Pretreatment; Ethanol; Corncob
资金
- National Natural Science Foundation of China [20976130, 20806057]
- Ministry of Science and Technology, P. R. China [2007BAD42B02, 2006DA62400]
- Ministry of Education [IRT0641, B06006]
To obtain high concentration of ethanol from cellulose, corncob was pretreated with acid and alkali to remove non-cellulose components, and then subjected to simultaneous saccharification and fermentation (SSF). An ethanol concentration as high as 69.2 g/L was achieved with 19% dry matter (DM) using batch SSF, resulting in an 81.2% overall ethanol yield. A fed-batch process using a high solid concentration was also investigated. Fresh substrate was pretreated with dilute sulfuric acid-sodium hydroxide, and then added at different amounts during the first 24 h, to yield a final dry matter content of 25% (w/v). SSF conditions with cellulose loading of 22.8 FPU/g glucan, dry yeast (Saccharomyces cerevisiae) loading of 5 g/L and substrate supplementation every 4 h yielded the highest ethanol concentration of 84.7 g/L after 96 h. This corresponded to a 79% overall ethanol yield. (C) 2009 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据