Producing Precipitated Calcium Carbonate with and without Terpineol

Abstract

In this study, six experiments to produce precipitated calcium carbonate were carried out, two experiments without terpineol and four experiments with terpineol. The volumes of terpineol used were 1 mL and 2 mL with 90 % purity. The starting material used was calcium oxide. Terpineol and sucrose were used as additive. The flow rates of carbon dioxide gas used were 0.2 L/min and 2 L/min. Precipitation concept was employed in producing precipitated calcium carbonate (PCC). PCC products produced were analysed using X-ray fluorescence (XRF) and Field Emission Scanning Electron Microscope (FESEM). XRF was used to determine elemental oxides such as calcium oxide, iron oxide, manganese oxide, etc. FESEM was used to determine the morphology of the PCC produced. The highest purity of calcium carbonate obtained was from PCC3 that used 1 mL terpineol with CO₂ gas flow rate 0.2 L/min. The highest amount of PCC product produced was 20.1 g with flow rate of CO₂ gas 0.2 L/min and without terpineol. Grain shape PCC was produced with flow rate of CO₂ gas 0.2 L/min and without terpineol. Cubic shape PCC was produced with flow rate of CO₂ gas 0.2 L/min and with 1 mL terpineol.