Biodiesel production from waste cooking sunflower oil and environmental impact analysis

Mohammed Saifuddin, Amru N. Boyce


Waste cooking oil offers great potential as a low cost biodiesel feedstock. Several parameters were tested for the optimumproduction of biodiesel and these included varying the alcohol:oil molar ratios, different catalyst concentrations,temperatures and stirring speed. For the optimum production of biodiesel, the molar ratio of alcohol to oil used was 6:1.The fatty acid methyl esters identified in the biodiesel were methyl palmitate, methyl linoleate, methyloleate and methylstearate. The viscosity of the produced biodiesel was within the range of international ASTM standards. Engine exhaustemission tests of biodiesel showed that the carbon monoxide and unburned hydrocarbon emissions were lower than thatof petrodiesel. The nitrogenous oxides emission and specific fuel consumption were higher than that of conventionaldiesel fuel. It can be concluded that biodiesel produced from waste sunflower oil can be considered as a great potentialsource of commercial biodiesel.


Biodiesel; emission; fuel consumption; sunflower oil; viscosity.

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