The transesterification of waste cooking oil (WCO) with methanol to produce fatty acid methyl esters
(FAMEs) in the presence of barium-modified montmorillonite K10 (BMK10) catalyst was investigated in a
batch reactor. The influence of the reaction parameters on the yield of FAME was investigated. The
highest value of 83.38% was obtained with 3.5 wt% catalyst loading at 150 C with a methanol: oil molar
ratio of 12:1 during a reaction time of 5 h. BMK10 is a promising low-cost catalyst for the transesterification
of WCO to produce FAME.