Heterogeneous Catalytic Process to Convert Vegetable Oil into Biodiesel pp. 99-122
Authors: (Masato Kouzu, Research Center for Fine Particle Science and Technology, Doshisha University, Kizugawa, Kyoto, Japan)
Abstract: In the existent process to produce biodiesel, alkali hydroxide dissolved in methanol catalyzes the transesterification of the feedstock oil consisting of triglycerides with methanol. The homogeneous base catalysis is very effective in enhancing the reaction efficiency, but it is necessary to wash the homogeneous base catalyst off the crude biodiesel with water after the reaction. A massive amount of wastewater originating in the purification mentioned above is one of the problems causing costly production of biodiesel. Also, the purification allows stable emulsion to be formed, which not only disturbs the process operation but also decreases the productivity. Therefore, many researchers took their interests in utilizing heterogeneous catalytic process for biodiesel production. In the present work, research papers studying the heterogeneous catalyst for the transesterification of triglycerides are reviewed.
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