In situ transesterification of highly moisturized microalgae using homogeneous acid catalysts = 균일계 산촉매를 이용한 고수분함량의 미세조류로부터 동시 지질 추출 및 트랜스에스터화 반응

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This study addresses in situ transesterification of highly saturated wet microalgae with hydrochlo-ric acid (HCl) as a catalyst. In situ transesterification was performed by heating the mixture of wet algal cells, HCl, methanol, and solvent in a single pot, resulting in the fatty acid methyl ester (FAME) yield over 90 wt. % at $95^\circ C$. The reaction variables including temperature, amounts of catalyst, reactant, and solvent, and type of solvents were investigated. Compared with the catalyt-ic effect of sulfuric acid, in situ transesterification using HCl has benefits of being less affected by moisture levels that are as high as or above 80 wt. %, and requiring less amounts of catalyst and solvent. For an equimolar amount of catalyst, HCl showed 15 wt. % higher FAME yield than sul-furic acid. This in situ transesterification using HCl as a catalyst would help to realize a feasible way to produce biodiesel from wet microalgae.
Advisors
Lee, Jae W.researcher이재우researcher
Description
한국과학기술원 :생명화학공학과,
Publisher
한국과학기술원
Issue Date
2016
Identifier
325007
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 생명화학공학과, 2016.2 ,[vii, 27 p. :]

Keywords

in situ transesterification; hydrochloric acid (HCl); biodiesel; wet microalgae; high moisture content; homogeneous catalyst; 단일공정; 바이오디젤; 미세조류; 산업과; 균일계; 산촉매

URI
http://hdl.handle.net/10203/221513
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=649492&flag=dissertation
Appears in Collection
CBE-Theses_Master(석사논문)
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