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Metal Ion Removal from Aqueous Solution by Liquid Phase Polymer‐Based Retention Technique
Author(s) -
Rivas Bernabé L.,
Pereira Eduardo D.,
Robles Pamela,
Cid Rocío
Publication year - 2006
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200650319
Subject(s) - metal , metal ions in aqueous solution , polymer , aqueous solution , size exclusion chromatography , polymerization , filtration (mathematics) , chemistry , ligand (biochemistry) , molar mass distribution , ion , nuclear chemistry , polymer chemistry , analytical chemistry (journal) , chromatography , organic chemistry , biochemistry , receptor , mathematics , enzyme , statistics
Summary: Water‐soluble poly[3‐(dimethylamino)propylacrylate] is synthesized by radical polymerization with a yield of 87%. The polymer structure is confirmed by FT‐IR and 1 H‐NMR spectroscopies. The polymer lost only 3% of weight up to 100 °C. The narrowest molecular weight distribution is observed with the fraction between 3,000 and 10,000 Da. P(DAPA) presents a high affinity for the metal ions Pb 2+ and Cu 2+ , while the other metal ions are not significantly retained. By increasing the filtration factor, Z, metal ion affinity decreases, indicating a very weak ligand‐metal interaction and the possibility of its destruction when washed with water at the filtration cell's pH. For Z = 10, the retention values of Pb 2+ and Cu 2+ at pH 5 are 76.5% and 48.5%, respectively, while the values for Cu 2+ and Cd 2+ at pH 7 are 89.5% and 40.4%, respectively.