relation: https://khub.utp.edu.my/scholars/6947/ title: Optimisation and Kinetic Studies of Acid Esterification of High Free Fatty Acid Rubber Seed Oil creator: Chuah, L.F. creator: Bokhari, A. creator: Yusup, S. creator: Klemeš, J.J. creator: Abdullah, B. creator: Akbar, M.M. description: Pretreatment of the high free fatty acid (FFA) rubber seed oil from Malaysia (RSOM) and Vietnam (RSOV) via esterification reaction has been investigated. Response surface methodology analysis using central composite design was used to optimise important parameters, including reaction temperature, catalyst loading, methanol-to-oil molar ratio and reaction time on FFA reduction. Optimal esterification conversion was achieved at 50 �C, 1.38 wt, 15.98:1 molar ratio and 2 h for RSOM with 99.3 FFA reduction, whereas 65 �C, 10.74 wt, 10:1 molar ratio and 1 h for RSOV with 98.6 FFA reduction. Catalyst loading had been found to have the most effect on the FFA reduction followed by methanol-to-oil molar ratio while increasing temperature and reaction time had nominal effect. The frequency factor and activation energy of RSOV were about 1.8- and 1.2-fold higher than RSOM. © 2015, King Fahd University of Petroleum & Minerals. publisher: Springer Verlag date: 2016 type: Article type: PeerReviewed identifier: Chuah, L.F. and Bokhari, A. and Yusup, S. and Klemeš, J.J. and Abdullah, B. and Akbar, M.M. (2016) Optimisation and Kinetic Studies of Acid Esterification of High Free Fatty Acid Rubber Seed Oil. Arabian Journal for Science and Engineering, 41 (7). pp. 2515-2526. ISSN 2193567X relation: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84975840794&doi=10.1007%2fs13369-015-2014-1&partnerID=40&md5=7019ac378fabbd82a5ee5a31cbd595b6 relation: 10.1007/s13369-015-2014-1 identifier: 10.1007/s13369-015-2014-1