Transesterification of Jatropha oil to biodiesel using SrO catalysts modified with CaO from waste eggshell
Supaphorn Palitsakun, Kitsirirat Koonkuer, Boossayamas Topool, Anusorn Seubsai, Kandis Sudsakorn
Abstract
Addition of SrO in combination with a hydration technique were used to modify eggshell-derived CaO catalysts for transesterification of Jatropha oil with methanol. A Box-Behnken design of experiment was employed to determine the optimal conditions. The results showed that the maximum methyl ester content of 99.71% could be achieved with the catalyst having 7 mmol/g of SrO at 65 °C, 89.8 min, MeOH:oil molar ratio of 27.6:1, and catalyst amount of 4.77 wt%. At these conditions, the catalyst remained active with methyl ester content of ca. 90% for several cycles and gradually deactivated due to the losses of active metals.
Topics & Concepts
TransesterificationCatalysisMethanolBiodieselJatrophaEggshellChemistryBiodiesel productionMolar ratioNuclear chemistryOrganic chemistryMaterials scienceChemical engineeringBiologyEcologyEngineeringBiodiesel Production and ApplicationsCatalysis and Hydrodesulfurization StudiesLubricants and Their Additives