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Mercury removal from aqueous solution using coke-derived sulfur-impregnated activated carbons / Jenny H. Cai in Industrial & engineering chemistry research, Vol. 49 N° 6 (Mars 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 6 (Mars 2010) . - pp. 2716–2721 Titre : Mercury removal from aqueous solution using coke-derived sulfur-impregnated activated carbons Type de document : texte imprimé Auteurs : Jenny H. Cai, Auteur ; Charles Q. Jia, Auteur Année de publication : 2010 Article en page(s) : pp. 2716–2721 Note générale : Industrial Chemistry Langues : Anglais (eng) Mots-clés : 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 [article] Mercury removal from aqueous solution using coke-derived sulfur-impregnated activated carbons [texte imprimé] / Jenny H. Cai, Auteur ; Charles Q. Jia, Auteur . - 2010 . - pp. 2716–2721. Industrial Chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 6 (Mars 2010) . - pp. 2716–2721 Mots-clés : 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