TY - JOUR AB - The main aim of this research is to develop environmentally and economically benign heterogeneous catalysts for biodiesel production via transesterification of palm oil. For this propos, calcium oxide (CaO) catalyst has been developed from bottom ash waste arising from woody biomass gasification. Calcium carbonate was found to be the main component in bottom ash and can be transformed into the active CaO catalyst by simple calcination at 800 degrees C without any chemical treatment. The obtained CaO catalysts exhibit high biodiesel production activity, over 90% yield of methyl ester can be achieved at the optimized reaction condition. Experimental kinetic data fit well the pseudo-first order kinetic model. The activation energy (Ea) of the transesterification reaction was calculated to be 83.9 kJ mol(-1). Moreover, the CaO catalysts derived from woody biomass gasification bottom ash can be reutilized up to four times, offering the efficient and low-cost CaO catalysts which could make biodiesel production process more economic and environmental friendly. (C) 2014 Elsevier Ltd. All rights reserved. AD - Natl Univ Singapore, NUS Environm Res Inst, Singapore 138602, Singapore AN - WOS:000349724800023 AU - Maneerung, T. AU - Kawi, S. AU - Wang, C. H. DA - Mar 1 DO - 10.1016/j.enconman.2014.12.057 J2 - Energ Convers Manage KW - biodiesel production LA - English N1 - Cb6gf PY - 2015 SN - 0196-8904 SP - 234-243 ST - Biomass gasification bottom ash as a source of CaO catalyst for biodiesel production via transesterification of palm oil T2 - Energy Conversion and Management TI - Biomass gasification bottom ash as a source of CaO catalyst for biodiesel production via transesterification of palm oil UR - ://WOS:000349724800023 VL - 92 ID - 11530 ER -