A thermodynamic approach to choosing pervaporatives membranes
Selección de membranas pervaporativas mediante criterios termodinámicos
DOI:
https://doi.org/10.15446/ing.investig.v26n3.14747Keywords:
membrane, polymer, solvent, pervaporation, thermodynamics, interaction, solubility (en)membrana, polímero, solvente, pervaporación, termodinámica, interacción, solubilidad (es)
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This work describes separating a mixture of several components obtained as a product of methyl polymethyl methacrylate (PMMA) thermo-degradation. It was aimed at purifying methyl methacrylate monomer (MMA) obtained by 95% mass thermal degradation to reach 99.5% maximum pervaporation concentration. This work studied the theory of pervaporation and applying the main thermodynamic criteria for choosing suitable polymer membranes for separating the MMA/PRP/ISB mixture. Such thermodynamic criteria were based on monomer interaction with and solubility on the membrane. The advantage of using this separation technique lies mainly in the fact that this method has low energy consumption compared to other processes, such as distillation or crystallisation.
Este trabajo describe la separación de una mezcla de varios componentes obtenidos como productos del proceso de termo-degradación del polimetacrilato de metilo (PMMA). Se purificó el monómero de metacrilato de metilo, obtenido por degradación térmica 95% en masa, mediante el proceso de pervaporación hasta obtener una concentración máxima de 99.5%. El objetivo de este trabajo consistió en realizar una revisión conceptual sobre pervaporación y en la aplicación de los principales criterios termodinámicos para la selección de membranas poliméricas para la separación de la mezcla MMA/PRP/ISB. Estos criterios termodinámicos se basan en parámetros de interacción y solubilidad de los monómeros sobre la membrana. La ventaja principal de la utilización de esta técnica de separación reside en el bajo consumo de energía comparado con otros procedimientos, tales como la destilación o la cristalización.
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1. Mahacine Amrani. (2008). Separating a water-propanol mixture using PDMS pervaporation membranes. Ingeniería e Investigación, 28(2), p.53. https://doi.org/10.15446/ing.investig.v28n2.14892.
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Copyright (c) 2006 Mahacine Amrani
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