A single step transesterification process to produce biodiesel from the spent cooking oil

• Main Authors: Indah Thuraya, Herman, Khairuddin, Md Isa, Naimah, Ibrahim, Farizul Hafizb, Kasim, Mohd Aizudin, Abd Aziz
• Format: Conference or Workshop Item
• Language: English
• Published: IOP Publishing Ltd 2021
• Subjects: QD Chemistry; T Technology (General); TA Engineering (General). Civil engineering (General); TP Chemical technology
• Online Access: http://umpir.ump.edu.my/id/eprint/35399/1/A%20single%20step%20transesterification%20process%20to%20produce%20biodiesel%20from%20the%20spent%20cooking%20oil.pdf; http://umpir.ump.edu.my/id/eprint/35399/; https://doi.org/10.1088/1755-1315/765/1/012077
• Institution: Universiti Malaysia Pahang

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 oC for 120 minutes. The process of transesterification was performed at a reaction temperature of 60 oC, 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.