Influences of Storage Duration on the Fuel Properties of Biodiesel derived from Jatropha and Waste Cooking Oil

Abstract

Biodiesel is an alternative fuels that have competitive properties as petroleum diesel. Biodiesel is usually can be derive from any fatty acid or oil by transesterification process. This research is to investigate the effects of storage duration and indoor ambient condition on biodiesel properties and characteristics. There are three types of blending which is 5vol% blends (5vol% plant oil 95vol% diesel), 10vol% blending (10vol% plant oil and 90vol% diesel) and 15vol% blending (15vol% plant oil and 85vol% diesel) each called CPO5 (crude palm oil 5vol%), CPO10 (crude palm oil 10vol%),CPO15 (crude palm oil 15vol%), JO5 (jatropha oil 5vol%), JO10 (jatropha oil 10vol%), JO15 (jatropha oil 15vol%) WCO5 (waste cooking oil 5vol%), WCO 10 (waste cooking oil 10vol%), and WCO15 (waste cooking oil 15vol%) respectively. All samples are store at indoor condition and he changes of fuel properties such as acid value, water content, flash point, density and viscosity were measured until 1960 hours periods. The result showing and increasing value is the water content and density. But for the acid value and viscosity the data was showing a constant value throughout the time period. In flash point case the data was varied by the type of oil used, for jatropha group it was showing and increasing value and for another group was showing a decreasing result. Under 1960 hours of storage duration, the effect of degradation was happen although the effect is not significance because the changes are still in acceptable ranges.