PENGARUH RASIO MOLAR TERHADAP KUALITAS BIODIESEL DARI BIJI KARET (HEVEA BRASILIENSIS) METODE NON-KATALIS ALIRAN SEMI KONTINU

Abstract

Motorized vehicles which continue to increase have an impact on increasing the fuel needed. the higher the fuel consumption, the higher the emissions produced, so that more environmentally friendly fuels are needed. The purpose of this study was to determine the quality and yield of biodiesel from rubber seed oil using the non-catalyst method in accordance with the standards set by the Director General of New, Renewable Energy and Energy Conversion Number: 189 K/DJE/2019 with variations in molar ratios of 170, 180, 190 , and 200. The process of making biodiesel includes three stages, namely: the stage of producing rubber seed oil, biodiesel production, and quality testing. This research shows that the molar ratio of 170 is the best variation because it produces the most methyl esters and the least glycerol. Testing the quality of biodiesel from rubber seed oil using a non-catalyzed semi-continuous flow method that meets the standards set by the Director General of New, Renewable Energy and Energy Conversion Number: 189 K/DJE/2019 are: The carbon residue parameter is 0.03% , while the viscosity parameter, cetane number and flash point, are still not fulfilled. The highest yield was obtained at the 170 molar ratio variation of 24.4%.

Keywords: rubber seed, biodiesel, non-catalyst, molar ratio