This research aims to study the design and construction of clean bio-diesel
to wash the catalyst. Soap and alcohol-based reaction and contaminants from biodiesel
by a factor of washing biodiesel makes diesel cleaner and more efficient
, there are three parts: 1). the water content of biodiesel 0.8: 1.0, 1.25: 1.0 and 2.5: 1.0, 2) flow rates on the two, three and four liters per minute, and 3) the time it takes to wash the biodiesel at 0.5. 1 and 2, respectively