PMID- 28946094 OWN - NLM STAT- MEDLINE DCOM- 20180530 LR - 20181202 IS - 1873-2976 (Electronic) IS - 0960-8524 (Linking) VI - 247 DP - 2018 Jan TI - Optimization and kinetic study of ultrasonic assisted esterification process from rubber seed oil. PG - 51-57 LID - S0960-8524(17)31640-1 [pii] LID - 10.1016/j.biortech.2017.09.075 [doi] AB - Recently, rubber seed oil (RSO) has been considered as a promising potential oil source for biodiesel production. However, RSO is a non-edible feedstock with a significant high free fatty acid (FFA) content which has an adverse impact on the process of biodiesel production. In this study, ultrasonic-assisted esterification process was conducted as a pre-treatment step to reduce the high FFA content of RSO from 40.14% to 0.75%. Response surface methodology (RSM) using central composite design (CCD) was applied to the design of experiments (DOE) and the optimization of esterification process. The result showed that methanol to oil molar ratio was the most influential factor for FFA reduction whereas the effect of amount of catalyst and the reaction were both insignificant. The kinetic study revealed that the activation energy and the frequency factor of the process are 52.577kJ/mol and 3.53x10(8)min(-1), respectively. CI - Copyright (c) 2017 Elsevier Ltd. All rights reserved. FAU - Trinh, Huong AU - Trinh H AD - Chemical Engineering Department, Biomass Processing Laboratory, Center of Biofuel and Biochemical Research (CBBR), Universiti Teknologi PETRONAS, Bandar Seri Iskandar, 32610 Seri Iskandar, Perak, Malaysia. FAU - Yusup, Suzana AU - Yusup S AD - Chemical Engineering Department, Biomass Processing Laboratory, Center of Biofuel and Biochemical Research (CBBR), Universiti Teknologi PETRONAS, Bandar Seri Iskandar, 32610 Seri Iskandar, Perak, Malaysia. Electronic address: drsuzana_yusuf@utp.edu.my. FAU - Uemura, Yoshimitsu AU - Uemura Y AD - Chemical Engineering Department, Biomass Processing Laboratory, Center of Biofuel and Biochemical Research (CBBR), Universiti Teknologi PETRONAS, Bandar Seri Iskandar, 32610 Seri Iskandar, Perak, Malaysia. LA - eng PT - Journal Article DEP - 20170912 PL - England TA - Bioresour Technol JT - Bioresource technology JID - 9889523 RN - 0 (Biofuels) RN - 0 (Fats, Unsaturated) RN - 0 (Plant Oils) RN - 0 (rubber seed oil) SB - IM MH - Biofuels MH - Catalysis MH - Esterification MH - *Fats, Unsaturated MH - Kinetics MH - Plant Oils MH - *Ultrasonics OTO - NOTNLM OT - Biodiesel OT - Esterification kinetics OT - Response surface methodology OT - Rubber seed oil OT - Ultrasonic reactor EDAT- 2017/09/26 06:00 MHDA- 2018/05/31 06:00 CRDT- 2017/09/26 06:00 PHST- 2017/07/17 00:00 [received] PHST- 2017/09/08 00:00 [revised] PHST- 2017/09/09 00:00 [accepted] PHST- 2017/09/26 06:00 [pubmed] PHST- 2018/05/31 06:00 [medline] PHST- 2017/09/26 06:00 [entrez] AID - S0960-8524(17)31640-1 [pii] AID - 10.1016/j.biortech.2017.09.075 [doi] PST - ppublish SO - Bioresour Technol. 2018 Jan;247:51-57. doi: 10.1016/j.biortech.2017.09.075. Epub 2017 Sep 12.