TY - JOUR PB - Italian Association of Chemical Engineering - AIDIC UR - https://www.scopus.com/inward/record.uri?eid=2-s2.0-84946114160&doi=10.3303%2fCET1545212&partnerID=40&md5=94aff82749ea0ea76ab57d4e8df54659 ID - scholars5704 TI - Transesterification via direct-ultrasonic irradiation of rubber seed oil with waste materials based heterogeneous catalyst SN - 22839216 Y1 - 2015/// A1 - Amin, M.M. A1 - Yusup, S. N1 - cited By 2 SP - 1267 N2 - Present process of transesterification faces various challenges. The most challenging is to obtain high conversion rate when using high free fatty acid (FFA) feedstock. The aim of this study is to investigate transesterification process of rubber seed oil (RSO) through direct-ultrasonic irradiation (UI) with addition of waste material based heterogeneous catalyst. The waste material based heterogeneous catalyst derived from empty fruit bunch (EFB) was prepared using incipient wetness impregnation method. System parameters such as reaction time, reactants molar ratio, ultrasonic amplitude and catalyst amount were studied. Properties of free fatty acid (FFA) content were measured for RSO and RSO-ester product. Characterization of catalyst was done using X-ray diffraction analyses and it was found that potassium was the primary component of the ash. Esterification with acid sulphuric (H2SO4) catalyst using direct-ultrasonic irradiation successfully reduced the FFA value in rubber seed oil to less than 2 with application of 30 amplitude frequency in 20 min. However transesterification with waste material heterogeneous catalyst (KOH/EFB) under direct-ultrasonic irradiation showed low conversions of fatty acid methyl ester (FAME). Copyright © 2015, AIDIC Servizi S.r.l.,. JF - Chemical Engineering Transactions VL - 45 AV - none EP - 1272 KW - Catalysts; Characterization; Esters; Flood control; Irradiation; Oils and fats; Rubber; Transesterification; X ray diffraction; X ray diffraction analysis KW - Characterization of catalysts; Fatty acid methyl ester; Heterogeneous catalyst; High free fatty acids; Incipient wetness impregnation method; Transesterification process; Ultrasonic amplitude; Ultrasound irradiation KW - Fatty acids ER -