Membrane separation of multicomponent aqueous solutions

Summary

A method of reagent-membrane separation for extracting target components from multicomponent aqueous mixtures is presented. The process includes the formation of complexes of target components with associated additives and subsequent membrane separation of the modified mixture. The universalism of the method is substantiated due to the variety of properties of the selected associating additives. The importance of optimizing the process parameters, such as pore size and hydrophilicity of the membrane material, is noted. Experiments confirm the long service life of the membranes, as well as the positive effect of ultrasonic and infrared irradiation on the stabilization of the resulting colloidal systems. The method demonstrates possible deep concentration of the modified mixture with a high specific membrane productivity. The method was used to soften methanol-water solutions of gas production; the advantages of reagent-membrane separation over traditional softening methods in efficiency and economic feasibility were demonstrated.

Key words

reagent-membrane separation , target components , associating additives , methanol-water solution softening , ultrasound and infrared irradiation