Transactions of the Korean hydrogen and new energy society (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Improvement of the Bioethanol Productivity from Debranned Barley

보리의 도정을 통한 바이오에탄올 생산성 향상 연구

  • JEON, HYUNGJIN (Advanced Institue of Technology, Changhae Ethanol Co., Ltd.) ;
  • KIM, YULE (Advanced Institue of Technology, Changhae Ethanol Co., Ltd.) ;
  • KIM, SHIN (Research Institute of Petroleum Technology, Korea Petroleum Quality and Distribution Authority) ;
  • JEONG, JUN-SEONG (Advanced Institue of Technology, Changhae Ethanol Co., Ltd.)
  • 전형진 ((주)창해에탄올 종합기술원) ;
  • 김율 ((주)창해에탄올 종합기술원) ;
  • 김신 (한국석유관리원 석유기술연구소) ;
  • 정준성 ((주)창해에탄올 종합기술원)
  • Received : 2018.09.21
  • Accepted : 2018.12.30
  • Published : 2018.12.30
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Abstract

Bran of barley causes high viscosity in bioethanol production due to the large amount of ${\beta}$-glucans and fiber. High viscosity is the main cause of decreased productivity and decreased facility efficiency in ethanol production. In order to prevent high viscosity, this study investigated the possibility of bioethanol from barley by debranning. As a result, it was able to reduced the viscosity (22.8 cP to 17.5 cP). And the fermentation speed and yield were improved as the activity of the enzyme and activity of yeast was also increased was improved due to the removal of non-fermentable components. In conclusion, debranning was advantageous in two ways. Firstly, bran removal increased the starch content of the feedstock and decreased viscosity of mash, improving ethanol fermentation. Secondly, by-products produced by debranning can use valuable products. It was remarkable results to the feasibility of bioethanol production from debranned barley.

Keywords

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Fig. 1. Schemaitic diagram of experimental procedure and condition

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Fig. 2. Material balance results after debranning of barley

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Fig. 4. Time course of ethanol concentration

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Fig. 3. Viscosity of mash (after liquefaction and fermentation)

Table 1. Starch value of rew material (barley)

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Table 2. Analysis of loss of raw materials and starch by debranning

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Table 3. Results of ethanol concentration and yield

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