COMPARISON OF BIODIESEL YIELDS FROM WASTE COOKING OIL AND EXTRACTED OILS FROM CASTOR AND SESAME SEED

Abstract

Petroleum product exhaustion and natural debasement are twin crises through which the world is defied. Waste cooking oil, castor and sesame oil were taken into consideration and their physio-chemical properties were observed. Biodiesel as produced via alkali trans-esterification and monitored by varying types of lye (KOH/NaOH) concentration i.e., 0.5, 1, and 1.5%.The ratio of methanol to oil was from 4:1, 3:1, 2:1 and 1:1with reaction time of 30 minutes and temperature of 60°C. Under optimized conditions maximum biodiesel was produced from waste cooking oil, castor oil with 1% KOH and sesame oil with 1% NaOH. The maximum biodiesel yield calculated for waste cooking oil and sesame oil was 98.78% and 82.19% for castor oil. HPLC was used to confirm the conversion of triglycerides into fatty acids methyl esters. Utilization of low cost feed stocks and further study of Physico-chemical properties of biodiesel will contribute in producing eco-friendly biodiesel for engines.