Pengaruh Penggunaan Metanol Bekas Pakai Secara Berulang-Ulang Terhadap Rendemen dan Mutu Biodiesel dengan Bantuan Reaktor Kavitasi Hidrodinamik

Abstract

Research on the using effect of repeatedly used methanol toward yield and quality of biodiesel assisted by hydrodinamic cavitation reactor had been done. The aim of this research was to study the effect of used methanol which is used repeatedly toward yield and quality of biodiesel products. The constant variable used in the transesterification process was the molar ratio of methanol and oil 4:1, KOH catalyst 1%, temperature 45oC and reaction time 60 minutes. The manipulated variable was the number of used methanol replications consisted of 4 replications (replication 1 using fresh methanol dan 3 replications using used methanol). The results of the research showed that biodiesel products couldn not be used directly in diesel engines because some parameters that were tested did not meet the requirements of SNI 04-7182:2006.