Affiliation:
1. University of Science and Technology Beijing
2. Beijing Municipal Research Institute of Environmental Protection
Abstract
Resource technology for food waste has become the research hot recently. To perform ethanol fermentation from food waste could realize energy recovery and pollution prevention. This study investigated the effects of two kinds of immobilization carriers, loofa sponge and fiber ball on ethanol fermentation from food waste. The seven runs of fermentation experiments demonstrated that the fermentation broth with fiber ball showed an increase of residue sugar concentration (31.98g/l) and a decrease of sugar utilization ratio (60.02%) in the fourth run. When it came to the seventh run of experiment, the sugar utilization ratio was only 49.04%, which showed that the fermentation yield by the yeast decreased significantly. While the fermentation by loofa sponge revealed stable fermentation efficiency, the sugar utilization ratio were all above 80%. The effect of size and inoculum for loofa sponge showed that 3 gram dry loofa sponge in 100 ml saccharification liquid was suitable. While the size had little effect on the fermentation.
Publisher
Trans Tech Publications, Ltd.
Reference21 articles.
1. J.Y. Gao, M. Sun, Y.B. Gao, X.L. Zhao, Trend of global application of biofuel ethanol, Gas & Heat. 29(2009)20-22.
2. L.J. Wang, Z.L. Luo, A. Shahbazi, Optimization of simultaneous saccharification and fermentation for the production of ethanol from sweet sorghum (Sorghum bicolor) bagasse using response surface methodology, Ind. Crops and Products. 42(2013).
3. B. Erdei, B. Franko, M. Galbe, G. Zzcchi, Separate hydrolysis and co-fermentation for improved xylose utilization in integrated ethanol production from wheat meal and wheat straw, Biotechnology For Biofuels. 5(2012)12.
4. Y.H. Li, W. Zhang, C.Q. Fang, J.G. Zhang, R.C. Xiong, G. Wei, Fermention of corn stalk hydrolysate by co-immobilized multi-microorganisms, Journal of BeiJing Universtity of Chemical Technology(Natural Science Edition). 5(2008)74-77.
5. D. Li, M.M. Li, S.J. Yu, Selection of carrier for yeast immobilization to produce alcohol and study on the fermentation techniques, Liquor-making Science & Technology. 8(2010)21-24.
Cited by
2 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献