Manufacture of Biodiesel by Transerification Reaction with Alkali Process from Waste Cooking Oil

For self-manufacture of biodiesel, the purchase cost of the feedstock is around the 70% manufacture cost, so, three kinds of the feedstock were tested & analyzed in this paper for decreasing the feedstock purchase cost for the fully developed technique of the transerification reaction with homogeneous/heterogeneous process. The other hand, the pre-treatment procedure for modulation of both acid number and iodine number is the important step for biodiesel manufacture with the feedstock of waste cooking oil (including extracted fat from cooking residue). And, the relating techniques are also developed actively in Taiwan.