Triglyceride Conversion of Waste Frying Oil up to 98.46% Using Low Concentration K⁺/CaO Catalysts Derived from Eggshells.

ABSTRACT: In this study, biodiesel, also known as fatty acid methyl ester (FAME), was synthesized from multi-stage frying waste soybean oil using chicken eggshell-derived CaO and potassium-impregnated K⁺-CaO heterogeneous catalysts. Potassium-impregnated catalysts (1.25% K⁺-CaO, 2.5% K⁺-CaO, and 5% K⁺-CaO) were developed by treating the calcined waste eggshell powder with KOH in different wt % ratios. The catalysts were characterized using FTIR, XRD, FESEM, EDS, BET, and particle size analysis techniques. Box-Behnken design-based optimization was exploited to optimize the reaction parameters. A maximum yield of 98.46%, calculated via ¹H NMR, was achieved following a 5% K⁺ doping, 12:1 methanol to oil molar ratio, 3% catalyst amount, 1

SUBMITTER: Hossain M 

PROVIDER: S-EPMC8717581 | biostudies-literature | 2021 Dec

REPOSITORIES: biostudies-literature