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Energy Science & Engineering Volume 6 ,Issue 6 ,2018-12-04
Ethanol production from sugarcane bagasse by fed‐batch simultaneous saccharification and fermentation at high solids loading
RESEARCH ARTICLES
Yueshu Gao 1 Jingliang Xu 2 Zhenhong Yuan 2 Jianchun Jiang 3 Zhenjia Zhang 1 Chunjie Li 1
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DOI:10.1002/ese3.257
Received 2018-08-12, accepted for publication 2018-10-24, Published 2018-10-24
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摘要

Abstract To make the bioethanol conversion process economically viable, improving solids loading (>15% [w/v]) in different unit operations is crucial. In this study, alkali pretreatment of sugarcane bagasse was carried out at high solids loading. Temperature and pH were optimised via batch simultaneous saccharification and fermentation (SSF) experiments using Saccharomyces cerevisiae Y‐2034 or Kluyveromyces marxianus NCYC‐587. The effects of enzyme addition mode and solids loading on ethanol production were studied in fed‐batch SSF experiments. It was demonstrated that the optimised pH and temperature for both S. cerevisiae Y‐2034 and K. marxianus NCYC‐587 were 5.2 and 37°C. The mode of enzyme addition “one‐time dose” improved ethanol productivity better than the “batch addition” mode. With fresh substrates added, solids loading strongly increased from 19% to 33% (w/v), corresponded to a small decline in the ethanol yield. At the final solids loading of 33% (w/v), the highest ethanol concentration of 75.57 ± 2.14 g/L was obtained, with ethanol productivity of 0.63 ± 0.02 g/(L h) and a yield of 66.17 ± 1.87%.

关键词

sugarcane bagasse;simultaneous saccharification and fermentation;high solids loading;fed‐batch process;ethanol production

授权许可

© 2018 Society of Chemical Industry and John Wiley & Sons Ltd.
This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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通讯作者

1. Jianchun Jiang.Institute of Chemical Industry of Forest Products, Chinese Academy of Forest, Nanjing, China.bio-energyi@163.com
2. Chunjie Li.School of Environmental Science & Engineering, Shanghai Jiao Tong University, Shanghai, China.bio-energyi@163.com

推荐引用方式

Yueshu Gao,Jingliang Xu,Zhenhong Yuan,Jianchun Jiang,Zhenjia Zhang,Chunjie Li. Ethanol production from sugarcane bagasse by fed‐batch simultaneous saccharification and fermentation at high solids loading. Energy Science & Engineering ,Vol.6, Issue 6(2018)

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