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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국미생물생명공학회 Journal of Microbiology and Biotechnology Journal of Microbiology and Biotechnology 제30권 제8호
- 발행연도
- 2020.1
- 수록면
- 1,227 - 1,234 (8page)
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초록· 키워드
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In this study, yeast cell immobilization was carried out in a packed bed reactor (PBR) to investigate the effects of the volumetric capacity of carriers as well as the different fermentation modes on fuel ethanol production. An optimal volumetric capacity of 10 g/l was found to obtain a high cell concentration. The productivity of immobilized cell fermentation was 16% higher than that of suspended-cell fermentation in batch and it reached a higher value of 4.28 g/l/h in repeated batches. Additionally, using this method, the ethanol yield (95.88%) was found to be higher than that of other tested methods due to low concentrations of residual sugars and free cells. Continuous ethanol production using four bioreactors showed a higher productivity (9.57 g/l/h) and yield (96.96%) with an ethanol concentration of 104.65 g/l obtained from 219.42 g/l of initial total sugar at a dilution rate of 0.092 h-1. Furthermore, we reversed the substrate-feed flow directions in the in-series bioreactors to keep the cells at their highest activity and to extend the length of continuous fermentation. Our study demonstrates an effective method of ethanol production with a new immobilized approach, and that by switching the flow directions, traditional continuous fermentation can be greatly improved, which could have practical and broad implications in industrial applications.
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참고문헌 (38)
참고문헌 신청
Zhu SD / 2005 / Simultaneous saccharification and fermentation of microwave/alkali pre-treated rice straw to ethanol / Bioproc. Biosyst. Eng 92:229~225
Baeyens J / 2015 / Challenges and opportunities in improving the production of bioethanol / Prog. Energ. Combust. Sci 47:60~88
Nguyen TH / 2017 / Impact of ecosystem carbon stock change on greenhouse gas emissions and carbon payback periods of cassava-based ethanol in Vietnam / Biomass Bioenerg 100:126~137
Najafpour G / 2004 / Ethanol production in an immobilized cell reactor using Saccharomyces cerevisiae / Bioresour. Technol 92:251~260
Bangrak P / 2011 / Continuous ethanol production using immobilized yeast cells entrapped in loofareinforced alginate carriers / Braz. J. Microbiol 42:676~684
Baeyens J / 2015 / Challenges and opportunities in improving the production of bioethanol / Prog. Energ. Combust. Sci 47:60~88
Nguyen TH / 2017 / Impact of ecosystem carbon stock change on greenhouse gas emissions and carbon payback periods of cassava-based ethanol in Vietnam / Biomass Bioenerg 100:126~137
Najafpour G / 2004 / Ethanol production in an immobilized cell reactor using Saccharomyces cerevisiae / Bioresour. Technol 92:251~260
Bangrak P / 2011 / Continuous ethanol production using immobilized yeast cells entrapped in loofareinforced alginate carriers / Braz. J. Microbiol 42:676~684
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