Separation and permeability of zincate ions through membranes

A novel method for the separation of zincate ions in alkaline media has been developed. This development uses a precipitation reaction of Mn(OH)2 and application on a microporous separator (Celgrade). The amount of zinc, passed through the membranes was estimated by electrogravimetric method. Different inorganic materials in combination with the separator material have been tested. Effective low grade permeability of zincate ions and increased resistivities have been found to be related to the amount of Mn(OH)2 applied on the separator.