title: Optimization of variables affecting the direct transesterification of wet biomass from Nannochloropsis oceanica using ionic liquid as a co-solvent.
abstract: Ionic liquids have many applications, one of which entails their utilization as powerful solvents. In the present study, various experimental conditions of ionic liquid-mediated direct transesterification were investigated in terms of lipid-extracting ionic liquids, catalyst, reaction time, reaction temperature and volume of methanol to achieve effective FAME conversion with wet microalgal feedstock, Nannochloropsis oceanica. With ionic liquid, [Bmim][CF3SO3], highest fatty acid methyl ester (FAME) yield was shown. Among many experimental parameters, the two most critical factors to enhance FAME conversion were characteristic of ionic liquids and volume of methanol. Optimized ionic liquid-mediated direct transesterification of wet N. oceanica, compared with a control experiment using chloroform and methanol, increased the FAME conversion yield by 11-fold.
authors: Department of Chemical and Biomolecular Engineering, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon, 305-701, Republic of Korea.
authors: Hansol
authors: H
authors: Lee
authors: Won-Sub
authors: WS
authors: Shin
authors: Joo-Young
authors: JY
authors: Jung
authors: Chul Woong
authors: CW
authors: Kim
authors: Jae W
authors: JW
authors: Lee
authors: Jong-Hee
authors: JH
authors: Kwon
authors: Ji-Won
authors: JW
authors: Yang
mesh_terms: D056804:Biofuels; D018533:Biomass; D002384:Catalysis; D002849:Chromatography, Gas; D004951:Esterification; D005227:Fatty Acids / Q000737:chemistry; D006851:Hydrochloric Acid / Q000737:chemistry; D052578:Ionic Liquids / Q000737:chemistry*; D007477:Ions; D008055:Lipids / Q000737:chemistry; D000432:Methanol / Q000737:chemistry; D058086:Microalgae / Q000378:metabolism*; D012997:Solvents / Q000737:chemistry; D013464:Sulfuric Acids / Q000737:chemistry; D013696:Temperature; D014867:Water / Q000737:chemistry
chemical_list: D056804:Biofuels; D005227:Fatty Acids; D052578:Ionic Liquids; D007477:Ions; D008055:Lipids; D012997:Solvents; D013464:Sulfuric Acids; D014867:Water; C033158:sulfuric acid; D006851:Hydrochloric Acid; D000432:Methanol