Open AccessA Single Step Transesterification Process to Produce Biodiesel from The Spent Cooking Oil
Author(s) -
Indah Thuraya Herman,
Khairuddin Md Isa,
Naimah Ibrahim,
Farizul Hafiz Kasim,
Mohd Aizudin Abd Aziz
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/765/1/012077
Subject(s) - transesterification , potassium hydroxide , biodiesel , methanol , chemistry , biodiesel production , glycerol , catalysis , yield (engineering) , organic chemistry , materials science , pulp and paper industry , metallurgy , engineering
A direct process of transesterification has been carried out to produce high yields of biodiesel. Conversion of waste cooking oil to methyl esters was performed using potassium hydroxide-glycerol (KOH-Gly) as a catalyst. KOH-Gly was produced by mixing KOH and glycerol at a mass ratio of 1:20 at a temperature of 80 °C for 120 minutes. The process of transesterification was performed at a reaction temperature of 60 °C, a molar ratio of oil to methanol of 1:6, 2% wt KOH-Gly catalytic loading for 30 minutes. This process resulted in a waste cooking oil conversion yield of about 97-98% to biodiesel using KOH-Gly as a catalyst. The two layers of the product were produced without the formation of soap, which facilitated the separation and purification process. Gas chromatography-mass spectrometry was used to analyse the chemical content of biodiesel.