Preparation of MgO-CaO/SiO2 catalyst from dolomite and geothermal solid waste for biodiesel production

Energy demand will increase along with the in population. The current energy is dominated by non-renewable as it could reduce dependence on fossil sources; hence, imperative to be developed. Biodiesel waste cooking oil its raw material one of renewable energies currently being Catalyst can utilized improve quality biodiesel product and process. major content solid geothermal power plant silica oxide, while dolomite contains magnesium oxide calcium oxide. This study aims test MgO-CaO/SiO2 catalyst performance from production. results characterization based FTIR, SEM, BET tests indicates a successful impregnation method result shows that best variable produce at ratio MgO-CaO: SiO2 15:85. conversion using this 92.63%. overall obtained have good accordance SNI 7182-2015.