Biodiesel Production from Various Oils Under Supercritical Fluid Conditions by Candida antartica Lipase B Using a Stepwise Reaction Method
- Authors
- Lee, Jong Ho; Kwon, Cheong Hoon; Kang, Jeong Won; Park, Chulhwan; Tae, Bumseok; Kim, Seung Wook
- Issue Date
- 5월-2009
- Publisher
- SPRINGER
- Keywords
- Biodiesel; Initial reaction rate; Lipase activity; Optimization; Solubility; Supercritical fluid condition
- Citation
- APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY, v.156, no.1-3, pp.454 - 464
- Indexed
- SCIE
SCOPUS
- Journal Title
- APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY
- Volume
- 156
- Number
- 1-3
- Start Page
- 454
- End Page
- 464
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/120127
- DOI
- 10.1007/s12010-008-8488-5
- ISSN
- 0273-2289
- Abstract
- In this study, we evaluate the effects of various reaction factors, including pressure, temperature, agitation speed, enzyme concentration, and water content to increase biodiesel production. In addition, biodiesel was produced from various oils to establish the optimal enzymatic process of biodiesel production. Optimal conditions were determined to be as follows: pressure 130 bar, temperature 45 degrees C, agitation speed 200 rpm, enzyme concentration 20%, and water contents 10%. Among the various oils used for production, olive oil showed the highest yield (65.18%) upon transesterification. However, when biodiesel was produced using a batch system, biodiesel conversion yield was not increased over 65%; therefore, a stepwise reaction was conducted to increase biodiesel production. When a reaction medium with an initial concentration of methanol of 60 mmol was used and adjusted to maintain this concentration of methanol every 1.5 h during biodiesel production, the conversion yield of biodiesel was 98.92% at 6 h. Finally, reusability was evaluated using immobilized lipase to determine if this method was applicable for industrial biodiesel production. When biodiesel was produced repeatedly, the conversion rate was maintained at over 85% after eight reuses.
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Collections - Graduate School of Energy and Environment (KU-KIST GREEN SCHOOL) > Department of Energy and Environment > 1. Journal Articles
- College of Engineering > Department of Chemical and Biological Engineering > 1. Journal Articles
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