Electrochemical Regeneration of Ion-exchange Resin

The kinetic study of this process reveals that in the case of individual resins two different situations occur. The first situation takes place when the solution convection levels the concentration in aU points, and the second one happens when there is no convection in the system. 

If electric current is passing through ion-exchange beads only, the degree of their regeneration ( , fraction) can be characterized by the following equation derived from Faraday s law and mass balance [3]  

If there is no ion exchange between the different points of the system, then the ion-exchange column regeneration can be described by the equation in following form  

It is necessary to use conductivity values determined at isoelectroconductivity conditions. Because the value of fl characterizes the ratio of ion mobility in an ion-exchange resin or more precisely - in its gel portion. Analysis of the equations above shows that the rate of electrochemical regeneration should be higher if there is no ion exchange between different parts of the system. The source of ions for regeneration makes no difference for the regeneration rate. 

Research on influences such as the fixed ion type, temperature, nature and concentration of a solution on kinetic and energy characteristics of the process 

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