The cation exchange resins IRN77 (M/s. Rohm and Haas, France, SA) and SKN1 (M/s.
Mitsubhishi Chemical Corporation, Japan) were used in this study. These two cation exchange
resins are generally used for the removal of radionuclides from thewater andwastewater.
Their physical properties and specifications as reported by the suppliers are shown in
Tables 1 and 2. All the chemicals used were of analytical grade and obtained from Aldrich
Chemical Company, USA