Effects of Storage Characteristics on Flash Point and Water Content of Biodiesel derived from Crude Palm Oil, Jatropha, and Waste Cooking Oil

Abstract

In recent years, there was a major drawback in the reduction of fossil fuels. Researchers attempts to find solutions to overcome this crisis including using biodiesel as replacement for fossil fuel. The aim of this study is to investigate the effects of ambient and storage characteristics on flash point and water content of biodiesel derived from crude palm oil, jatropha and waste cooking oil. There are three types of biodiesel blending which is 5 vol%, 10 vol% g and 15 vol% blending and compare with commercial diesel. There are three type of biodiesel blended from Crude Palm Oil, Jatropha, and Waste Cooking Oil. The biodiesel samples were stored in clinical compartment, at different temperatures and were monitored at regular interval over a period of 1960 hours’ periods and storage temperature from 28°C~35°C. The analysis of blending biodiesel properties is performed with ASTM D6751 and EN 14214 standard. The changes of properties of biodiesel such as density, kinematics viscosity, acid value, water content and flash point of biodiesel were discussed in detail. High blending ratio CPO blends and longer storage period influences the increasing of viscosity for both conditions. Storage characteristics has a great influence on the biodiesel blends especially under high blending ratio. Increasing storage duration and temperature for all variant blending ratios are found to influences the increasing of the water content fuel density, resulting in increased the biodiesel viscosity. However, flash point of all biodiesel blends tends to decrease with increasing storage duration at different storage temperature.