| Titre : | Mercury removal from aqueous solution using coke-derived sulfur-impregnated activated carbons (2010) |
| Auteurs : | Jenny H. Cai, Auteur ; Charles Q. Jia, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Industrial & engineering chemistry research (Vol. 49 N° 6, Mars 2010) |
| Article en page(s) : | pp. 2716–2721 |
| Note générale : | Industrial Chemistry |
| Langues : | Anglais |
| Tags : | Mercury Removal ; Aqueous Solution ; Coke-Derived ; Sulfur ; Impregnated ; Activated ; Carbons |
| Résumé : | Sulfur-impregnated activated carbons (SIACs) produced from oil-sands fluid coke by KOH−SO2 activation were applied to remove mercury ions from aqueous solutions. A pseudo-first-order rate expression can describe the Hg2+ adsorption behavior of SIACs produced in this study. The rate constants were found to be 0.01−0.102 min−1. The Hg2+ adsorption capacities of the examined SIACs ranged from 43 to 72 mg/g, which were comparable to those reported in the literature (35−100 mg/g) and that of a commercial SIAC (41 mg/g). The adsorption capacity increased with increasing specific surface area (SBET) of the SIACs, and a positive correlation was found between the SBET-normalized adsorption capacity and the total sulfur content of the SIACs. Elemental sulfur, disulfide, and thiophene seemed particularly effective in Hg2+ adsorption, as SIACs with these sulfur compounds showed higher adsorption capacities in general. |
| Note de contenu : | Bibiogr. |
| ISSN : | 0888-5885 |
| En ligne : | http://pubs.acs.org/doi/abs/10.1021/ie901194r |
