Preparation and Characterization of Polyamidoxime Chelating Resin from Rubberwood Fibre-G-Polyacrylonitrile
Grafted rubberwood fibre was converted to polyamidoxime ion-exchange resin in order to remove heavy metal ions from aqueous solution. The cation-exchange resin existed predominantly in the syn -hydroxyamino form. The water uptake by the resin was ca. 31 g/g dry resin while its hydrogen ion capacity...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
SAGE Publishing
2009-09-01
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| Series: | Adsorption Science & Technology |
| Online Access: | https://doi.org/10.1260/0263-6174.27.7.661 |
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| Summary: | Grafted rubberwood fibre was converted to polyamidoxime ion-exchange resin in order to remove heavy metal ions from aqueous solution. The cation-exchange resin existed predominantly in the syn -hydroxyamino form. The water uptake by the resin was ca. 31 g/g dry resin while its hydrogen ion capacity was 3.6 mmol/g. The adsorption capacity of the resin towards different metal ions from wastewater was determined at different pH values within the range 1–6. The prepared chelating ion-exchanger exhibited the highest adsorption capacity towards Cu 2+ ions (3.83 mmol/g), followed by Cd 2+ , Fe 3+ , Pb 2+ , Ni 2+ and Co 3+ ions, respectively. The results showed that the adsorption capacity depended on the solution pH. Polyamidoxime ion-exchange resin was also used to separate Co 3+ and Ni 2+ ions from Cu 2+ ions using a column technique. On passing Cu 2+ /Ni 2+ and Cu 2+ /Co 3+ ion mixtures through the resin at pH 3, Cu 2+ ions were adsorbed by the resin but no sorption of Ni 2+ or Co 3+ ions was detected. Approximately 98% of the Cu 2+ ions could be desorbed from the resin. FT-IR spectroscopy was used to confirm the conversion of polyacrylonitrile-g-rubberwood fibre to polyamidoxime. |
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| ISSN: | 0263-6174 2048-4038 |