2.4. Production of biodiesel
2.4.1. Pretreatment of WCO
Pretreatment of oil was carried out to remove the excess FFA
content. 0.5 g of activated carbon was added to 100 ml of WCO
and kept in a shaker flask at 150 rpm for 30 min under room
temperature (30 C). Then the oil was filtered and used for biodiesel
production.