Production of soybean ethanol-based biodiesel using CaO heterogeneous catalysts promoted by Zn,K and Mg |
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Authors: | Fabiano A N Fernandes Ronier M Lopes Marina P Mercado Evne S Siqueira |
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Institution: | Departamento de Engenharia Quimica, Universidade Federal do Ceara, Fortaleza, Ceara, Brazil |
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Abstract: | This article focuses on the optimization of the production of fatty acid ethyl esters from soybean oil using CaO-based heterogeneous catalysts. Three different catalytic promoters were evaluated: Magnesium, zinc, and potassium. The reaction has evaluated the promoter content (promoter to calcium molar ratio), catalyst load, alcohol to oil molar ratio, and temperature. Response surface methodology (RSM) was used to evaluate the influence of each variable on the yield of biodiesel. The addition of K2O or MgO in the catalyst has enhanced the yield in fatty acid ethyl esters, while the use of ZnO as a promoter was not successful. |
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Keywords: | Biodiesel soybean oil transesterification ethyl esters heterogeneous catalyst |
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