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Received October 28, 2014
Accepted January 29, 2015
articles This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Furfural production from hydrolysate of barley straw after dilute sulfuric acid pretreatment

Department of Chemical and Biological Engineering, Korea University, Anam-dong, Sungbuk-gu, Seoul 136-701, Korea
kimsw@korea.ac.kr
Korean Journal of Chemical Engineering, November 2015, 32(11), 2280-2284(5), 10.1007/s11814-015-0029-7
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Abstract

Lignocellulosic biomass contains various fermentable sugars and versatile compounds, and should be isolated selectively. In this study, a two step process for furfural production is suggested. Dilute acid pretreatment, which solubilizes hemicellulose, was performed on barley straw at 110-190 oC temperature with 0.1-2% sulfuric acid for 2-20 min and a liquid portion of the hydrolysate was utilized. Using this hydrolysate, furfural production was conducted. Approximately 140-200 oC temperature induced the hydrolysis and pyrolysis of the hydrolysate. The initial reaction rate was found to be 2.84×10.5 mol/L·sec at 180 oC when reacted for 5min, 48.5% of theoretical furfural production was obtained, and it was faster than the generally used one step furfural production methods. In addition, a high temperature gradient for pre-heating showed improvement of temperature control.

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