Journal of Pure and Applied MicrobiologyVol. 9 No. Special Edition Nov. 2015

Characterization of High Blended Palm Biodiesel Fuel Properties with Chemical Additive

Obed M. Ali*, Rizalman Mamat and Omar I. Awad

Faculty of Mechanical Engineering, Universiti Malaysia Pahang, 26600, Pekan, Pahang, Malaysia.

Received on 12 September 2015 and accepted on 13 Noveber 2015

 

ABSTRACT

Palm biodiesel-diesel blended fuel feasibility at high blending ratio was investigated in this study through characterization of blend properties with additives. Diethyl ether (DEE) has been used as an oxygenated additive with the blended fuel B50 (50% biodiesel + 50% diesel) at different ratios of 2%, 4%, 6% and 8%. Blended fuel properties with DEE additives were tested and evaluated according to ASTM fuel standard specifications. The results of this study is essential to qualify the trend of change of the different fuel properties with increasing additive ratio which can serve the researchers who work on biodiesel fuels to indicate the fuel suitability for diesel engine applications according to fuel standards. The results show slight improvement in density and acid value with significant decrease in viscosity by about 25% at 8% additive ratio which meets the blended fuel standard ASTM D7467. The maximum decrease in pour and cloud points are 6oC and 2oC at 8% additive ratio, accompanied by about 2.6% decrease in energy content of B50 for each 2% DEE additive ratio.

Keywords : Additive, diesel, diethyl ether, fuel property, palm biodiesel.