Metal ion removal from aqueous solution by liquid phase polymer-based retention technique
| Autor: | Rocío Cid, Pamela Robles, Eduardo Pereira, Bernabé L. Rivas |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2006 |
| Předmět: |
Aqueous solution
Chromatography Polymers and Plastics Chemistry Metal ions in aqueous solution Organic Chemistry Radical polymerization Ultrafiltration Condensed Matter Physics Polyelectrolyte Metal Membrane visual_art Materials Chemistry visual_art.visual_art_medium Molar mass distribution Nuclear chemistry |
| Zdroj: | MACROMOLECULAR SYMPOSIA Artículos CONICYT CONICYT Chile instacron:CONICYT |
| Popis: | 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,ooo 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. |
| Databáze: | OpenAIRE |
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