Abstract
At current paper, in order to decrease the cost of using 100% BDF obtained by transesterification, the use of mixture of BDF and wasted vegetable oil (WVO) which can be collected from kitchen or dining hall without any extra cost as an alternative fuel for diesel engine is suggested and experimentally verified. A ultrasound-based reactor is prepared to produce BDF based on the alkali-based chemical reaction. Being different with the conventional method, the ultrasound-based reactor utilizes ultrasonic sonochemistry effect of heating and stunning to promote ester interchange instead of using external heater and stunner. Also visualization of the reaction process by using a test reactor was conducted to observe how BDF is produced by sonochemistry effect. Viscosity of the mixed fuel of BDF and WVO at different ratio is measured. Finally the experiment of applying the synthesized BDF, mixture of BDF and WVO and pure WVO to a diesel-engine is performed. During the experiment, fuel consumption as well as concentrations of NO_x, HC, CO_2, CO and black smoke of the exhaust gas are measured and all the experimental results are reported and discussed.
