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http://dx.doi.org/10.17137/Korrae.2011.19.3.7

Pretreatment of Wasted Corn Stalk from Gangwon Province for Bioethanol Production  

Choi, Jae Min (Department of Biochemical Engineering, Gangneung-Wonju National University)
Kang, Se Young (Department of Biochemical Engineering, Gangneung-Wonju National University)
Yeom, Sung Ho (Department of Biochemical Engineering, Gangneung-Wonju National University)
Publication Information
Journal of the Korea Organic Resources Recycling Association / v.19, no.3, 2011 , pp. 79-89 More about this Journal
Abstract
The wasted corn stalk from Gangwon province is composed of 44.6 % glucan, 19.0 % xylan, 23.8 % lignin, 4.5 % ash and 8.1 % others. Statistical analysis, full factorial design, revealed that temperature was the most influential factor in the dilute sulfuric acid pretreatment and that the influence of temperature on xylose yield was 3.5 and 3.2 times higher than those of treatment time and acid concentration, respectively. Temperature was also the most influential factor for glucose yield in the pretreatment but it was less than 5 % throughout the pretreatment. Although minor sugar yield was observed when microwave or ultrasonication was solely introduced as a pretreatment method, the complex method incorporating microwave or ultrasonication into dilute sulfuric acid pretreatment enhanced sugar yield significantly. In particular, xylose yield was doubled when microwave and dilute sulfuric acid treatment was sequentially applied. The optimization of pretreatment and enzymatic hydrolysis as well as the investigation on the complex pretreatment in detail are left for further study.
Keywords
Corn stalk; Pretreatment; Dilute sulfuric acid; Microwave; Ultrasonication;
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Times Cited By KSCI : 5  (Citation Analysis)
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