Resumen de JCE Classroom Activity #106. Sequestration of Divalent Metal Ion by Superabsorbent Polymer in Diapers
Yueh-Huey Chen, Jia Ying Lin, Li Pin Lin, Han Liang, Jing Fun Yaung
This activity explores an alternative use of a superabsorbent polymer known as a water absorbing material. A dilute solution of CuCl2 is treated with a small piece of unused disposable diaper containing superabsorbent sodium polyacrylates. The polymer is used for the removal of Cu2+ ions from the solution. The Cu2+ ions in the solution are sequestered through ion exchange with the sodium ions of the insoluble polymer. The solution loses its color, and the polymer gels turn blue. The Cu2+ solutions before and after the treatment are further tested with soap solution to confirm the action of the polymer.
