| Titre : | Bromate ion-exchange properties of crystalline akaganéite (2009) |
| Auteurs : | Ramesh Chitrakar, Auteur ; Satoko Tezuka, Auteur ; Akinari Sonoda, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Industrial & engineering chemistry research (Vol. 48 N°4, Février 2009) |
| Article en page(s) : | p. 2107–2112 |
| Note générale : | Chemical engineering |
| Langues : | Anglais |
| Tags : | Crystalline akaganéite Ion-exchange properties BrO3− |
| Résumé : | We synthesized crystalline akaganéite (β-FeOOH; Cl− type) by hydrolysis of FeCl3 solution at 100 °C and examined the ion-exchange properties with BrO3−. The uptake rate of BrO3− was so fast that equilibrium was attained in 60 min. The uptake was significantly dependent on pH, showing a maximum uptake at pH ≈ 4. From distribution coefficients (Kd) determined with a mixed solution (BrO3−, Cl−, CO32−, and SO42−; each concentration = 0.1 mmol/dm3), crystalline akaganéite showed the highest selectivity toward BrO3−. The BrO3− uptake was fitted well with the Langmuir model. |
| En ligne : | http://pubs.acs.org/doi/abs/10.1021/ie8011038 |
