TRANSESTERIFIKASI MINYAK GORENG BEKAS MENJADI BIODIESEL MENGGUNAKAN KATALIS CaO CANGKANG SIPUT GONGGONG (Strombus canarium) DIIMPREGNASI KOH: VARIASI WAKTU DAN TEMPERATUR REAKSI

Abstract

Dog-conch snail waste can be used in the research field. Dog-conch snail shells contain carbonate compounds (CaCO3) which can be conversed to CaO through a calcination process at a temperature of 700-900 ºC. CaO is an active catalyst in the transesterification biodiesel reaction. One of the thing that can we do to increase the effectivenes of CaO catalyst in biodiesel production is by impregnated the alkaline metal in CaO. The alkaline metal insertion progress is by impregnating KOH on CaO. Biodiesel production using dog conch shell catalyst was carried out at calcination temperature of 900 ºC for 10 hours, impregnated with K 1, 3, 5% and calcinated again at 600 ºC for 5 hours. The results of functional group analysis using Fourier Transform Infra Red (FTIR) show the presence of an OH group in the wave number (3200-3650 cm-1). The optimum yield bioidesel was 84,24% with catalyst weight of 3% CaO 1:6 mole ratio of oil and methanol, 3 hours reaction time and 60 ºC temperature reaction.