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ERIC Number: EJ920063
Record Type: Journal
Publication Date: 2010-Sep
Pages: 2
Abstractor: As Provided
ISSN: ISSN-0021-9584
"JCE" Classroom Activity #106. Sequestration of Divalent Metal Ion by Superabsorbent Polymer in Diapers
Chen, Yueh-Huey; Lin, Jia-Ying; Lin, Li-Pin; Liang, Han; Yaung, Jing-Fun
Journal of Chemical Education, v87 n9 p920-921 Sep 2010
This activity explores an alternative use of a superabsorbent polymer known as a water absorbing material. A dilute solution of CuCl[subscript 2] is treated with a small piece of unused disposable diaper containing superabsorbent sodium polyacrylates. The polymer is used for the removal of Cu[superscript 2+] ions from the solution. The Cu[superscript 2+] 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 Cu[superscript 2+] solutions before and after the treatment are further tested with soap solution to confirm the action of the polymer. (Contains 2 figures and 1 scheme.)
Division of Chemical Education, Inc and ACS Publications Division of the American Chemical Society. 1155 Sixteenth Street NW, Washington, DC 20036. Tel: 800-227-5558; Tel: 202-872-4600; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Descriptive
Education Level: Higher Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A