Role of anions on heavy metal sorption of a cellulose modified with poly(glycidyl methacrylate) and polyethyleneimine
| Autor: | Ronald R Navarro, Katsuhiro Sumi, Kenji Tatsumi, Masatoshi Matsumura |
|---|---|
| Rok vydání: | 2001 |
| Předmět: |
Anions
Glycidyl methacrylate Environmental Engineering Metal ions in aqueous solution Inorganic chemistry Industrial Waste Waste Disposal Fluid Metal chemistry.chemical_compound Adsorption Polymethacrylic Acids Metals Heavy Equipment Reuse Polyethyleneimine Chelation Cellulose Waste Management and Disposal Chelating Agents Water Science and Technology Civil and Structural Engineering Aqueous solution Chemistry Ecological Modeling Sorption Hydrogen-Ion Concentration Pollution visual_art visual_art.visual_art_medium Rheology |
| Zdroj: | Water Research. 35:2724-2730 |
| ISSN: | 0043-1354 |
| DOI: | 10.1016/s0043-1354(00)00546-7 |
| Popis: | The influence of anions on the equilibrium and kinetic uptake of heavy metals from an aqueous solution by a novel nitrogen-type chelating adsorbent was evaluated. Equilibrium experiments revealed that stoichiometric amounts of metals and anions are adsorbed by the resin. Kinetic studies showed that during the initial stage of adsorption, the anions are adsorbed by the adsorbent prior to the metal ions. This occurred almost simultaneously with an increase in solution pH. At equilibrium, the pH returned towards its initial value. The concentration of anion also fluctuated during the entire equilibration process. Following these observations, mechanisms governing the role of anions on enhancing capacity and rate of metal uptake of this type of chelating adsorbent type were established. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect