Publication: Process optimization of rice husk ash supported catalyst in biodiesel synthesis using response surface methodology approach
Date
2024
Authors
Sulaiman N.F.
Leong Y.W.
Lee S.L.
Goh Z.W.
Yahya S.S.M.
Sofiah A.G.N.
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier Ltd
Abstract
Biodiesel is sustainable and biodegradable energy that is synthesized from renewable material consisting of a high capability to replace energy from fossil fuels. This research focused on biodiesel synthesis from waste cooking oil utilizing rice husk ash (RHA) supported catalysts. A series of alkaline earth metal oxide, calcium oxide, and strontium oxide supported on RHA catalyst; CaO/RHA and SrO/RHA catalysts were synthesized via wetness impregnation method with varied calcination temperatures and ratios. It was found that the 10SrO/90RHA (900 �C) catalyst produced maximum biodiesel yield (89.97%) over the transesterification process from waste cooking oil, while the catalytic activity of 10CaO/90RHA (800 �C) catalyst demonstrated the 83.09% of biodiesel yield. Further analysis on optimization of parameters for transesterification reaction using 10SrO/90RHA (10:90) catalyst revealed that higher biodiesel produced at a reaction temperature of 65 �C, catalytic loading of 6 wt%, oil-to-methanol of 1:18 mol ratio and reaction time of 1 h. The optimization for the 10SrO/90RHA (900 �C) catalyzed reaction was then verified using response surface methodology (RSM) throughout Box-Behnken design (BBD). The characteristics of the produced biodiesel, under optimal process conditions, comply with the standards set by ASTM D6751 and EN 14214 for fuel quality. ? 2023 Elsevier Ltd
Description
Keywords
Catalyst activity , Catalyst supports , Fossil fuels , Lime , Oils and fats , Optimization , Strontium , Strontium compounds , Surface properties , Synthetic fuels , Transesterification , Alkaline earth metal oxides , Biodiesel synthesis , Clean energy , Energy , Process optimisation , Response-surface methodology , Rice-husk ash , Synthesised , Waste cooking oil , ]+ catalyst , Biodiesel