Synthesis
(h)Ion-exchange resin can be used to remove poisonous ions from solution, replacing them with harmless ions, such as sodium and potassium. This method will be effective, because ion exchange materials contain loosely held ions which are able to be exchanged with other ions in solution that contact with ion exchange resin. Ion exchangers are containing insoluble acids or bases and salts, and this enable them to exchange either positively charged ions or negatively charged ions. And the other advantages of this method are the ion exchange process required very low costs & very little energy, and well maintened resin can last for many years. Therefore, ion-exchange resin method will be effective
http://www.dowwaterandprocess.com/products/periodic_table/pt_cu.htm
http://nzic.org.nz/ChemProcesses/water/13D.pdf