Simultaneous hydrolysis-esterification of wet microalgal lipid using acid.
This research demonstrated hydrolysis of wet microalgal lipid and esterification of free fatty acid (FFA) using acid in one-step process. The investigation of simultaneous hydrolysis-esterification (SHE) of wet microalgal lipid was conducted by using L27 orthogonal design and the effects of water content, volume of sulphuric acid, volume of methanol, temperature and time on SHE were examined. As a result, water content was found to be the most effective factor. The effects of various parameters on fatty acid methyl ester (FAME) content and equilibrium relation between FAME and FFA were also examined under water content 80%. Equimolar amounts of sulphuric acid and hydrochloric acid showed similar results. This method has great potential in terms of biodiesel production from microalgae since no organic solvents are used.
Graduate School of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8572, Japan.
Kenji
K
Takisawa
Kazuyo
K
Kanemoto
Muliasari
M
Kartikawati
Yutaka
Y
Kitamura
D000704:Analysis of Variance; D002384:Catalysis / Q000187:drug effects; D004951:Esterification / Q000187:drug effects; D004952:Esters / Q000032:analysis; D005227:Fatty Acids / Q000032:analysis; D006868:Hydrolysis / Q000187:drug effects; D008055:Lipids / Q000737:chemistry*; D000432:Methanol / Q000494:pharmacology; D058086:Microalgae / Q000378:metabolism*; D013464:Sulfuric Acids / Q000494:pharmacology*; D013696:Temperature; D014867:Water / Q000494:pharmacology*
D004952:Esters; D005227:Fatty Acids; D008055:Lipids; D013464:Sulfuric Acids; D014867:Water; C033158:sulfuric acid; D000432:Methanol
Acid; Biodiesel; Simultaneous hydrolysis-esterification; Wet microalgae