Gold sorption on chitosan derivatives
| Autor: | Holger Maldonado Garcia, Eric Guibal, Martha Ly Arrascue, Olga Horna |
|---|---|
| Rok vydání: | 2003 |
| Předmět: |
inorganic chemicals
Sorbent Hydrometallurgy Ion exchange Inorganic chemistry technology industry and agriculture Metals and Alloys chemistry.chemical_element Sorption Grafting complex mixtures Chloride Sulfur Industrial and Manufacturing Engineering Chitosan chemistry.chemical_compound chemistry Materials Chemistry medicine medicine.drug |
| Zdroj: | Hydrometallurgy. 71:191-200 |
| ISSN: | 0304-386X |
| DOI: | 10.1016/s0304-386x(03)00156-7 |
| Popis: | Four derivatives of chitosan have been prepared by cross-linking and by grafting of sulfur compounds. Sorption isotherms were performed at different pHs in order to optimize the pH conditions at fixed chloride concentration. Sorption isotherms were correlated with gold speciation in solution. Sulfur grafting decreases the influence of the pH on sorption isotherms. Introducing sulfur chelating moieties gives a dual structure to the polymer: chelating and ion exchange capability. Sorption kinetics was influenced by the sorbent dosage and the type of sorbent used. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect