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Author Ramos Rivas, Erick Harold |
Abstract The purpose of this study is the separation of anacardic acid from the CNSL, by using ion exchange resins. In order to achieve this purpose, it is proposed an anacardic acid quantification method suitable for small cashew processing industries in El Salvador. Different experiments are developed in order to determine whether a strong basic or weak basic resin is more suitable for the separation process. The equilibrium and the ion exchange kinetics are studied. The optimum operating conditions for the anacardic acid recovery process, by ion exchange resins, are determined through a 23 factorial experiment design. In addition, the numerical simulation of breakthrough curves is performed through the material transfer model (Adsorption - Diffusion - Convection) solution, which is obtained by the line’s method and the PDEPE function from Matlab®. Subsequently, the numerical solution is adjusted with experimental data. The results obtained in the column adsorption experiments, indicate that anacardic acid can be recovered satisfactorily and with high purity, through the method presented in this study. In addition, the results show that the resin regeneration process, suggested in this work, can be satisfactorily developed, achieving to recover the adsorption capacity of the resin in all the cases analyzed. Finally, the experimental data of breakthrough curves, for different temperatures and resin conditions (fresh and regenerated), fits very well to the mathematical model of matter transfer. The results allow predicting the rupture and saturation points, on pilot plant scale operating conditions. |
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Director Sempere Cebrian, Julià |
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Department IQS SE - Enginyeria Química i Ciència de Materials |
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Date of defense 2019-05-03
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