title: The adsorption of pharmaceutically active compounds from aqueous solutions onto activated carbons.
abstract: In this study, the adsorption of pharmaceutically active compounds - salicylic acid, acetylsalicylic acid, atenolol and diclofenac-Na onto activated carbons has been studied. Three different commercial activated carbons, possessing ∼650, 900 or 1500m(2)g(-1) surface areas were used as solid adsorbents. These materials were fully characterized - their textural, surface features and points of zero charge have been determined. The adsorption was studied from aqueous solutions at 303K using batch adsorption experiments and titration microcalorimetry, which was employed in order to obtain the heats evolved as a result of adsorption. The maximal adsorption capacities of investigated solids for all target pharmaceuticals are in the range of 10(-4)molg(-1). The obtained maximal retention capacities are correlated with the textural properties of applied activated carbon. The roles of acid/base features of activated carbons and of molecular structures of adsorbate molecules have been discussed. The obtained results enabled to estimate the possibility to use the activated carbons in the removal of pharmaceuticals by adsorption.
authors.affiliation: Faculty of Agriculture, Department of Chemistry, University of Belgrade, Nemanjina 6, 11080 Zemun, Serbia. Electronic address: vesna.rakic@ffh.bg.ac.rs.
authors.forename: Vesna
authors.initials: V
authors.lastname: Rakić
authors.affiliation: Faculty of Agriculture, Department of Chemistry, University of Belgrade, Nemanjina 6, 11080 Zemun, Serbia.
authors.forename: Vladislav
authors.initials: V
authors.lastname: Rac
authors.affiliation: Institut "Goša" Milana Rakića 35, 11000 Beograd, Serbia.
authors.forename: Marija
authors.initials: M
authors.lastname: Krmar
authors.affiliation: Institut de Recherches sur la Catalyse et l'Environnement de Lyon (IRCELYON) , UMR 5256 CNRS/Université Lyon1, 2 av. Albert Einstein, 69626 Villeurbanne Cedex, France.
authors.forename: Otman
authors.initials: O
authors.lastname: Otman
authors.affiliation: Institut de Recherches sur la Catalyse et l'Environnement de Lyon (IRCELYON) , UMR 5256 CNRS/Université Lyon1, 2 av. Albert Einstein, 69626 Villeurbanne Cedex, France.
authors.forename: Aline
authors.initials: A
authors.lastname: Auroux
mesh_terms: D000327:Adsorption; D001241:Aspirin / Q000737:chemistry*; D001262:Atenolol / Q000737:chemistry*; D002244:Carbon / Q000737:chemistry*; D004008:Diclofenac / Q000737:chemistry*; D020156:Salicylic Acid / Q000737:chemistry*; D012996:Solutions; D013499:Surface Properties; D014874:Water Pollutants, Chemical / Q000737:chemistry*; D018508:Water Purification
chemical_list: D012996:Solutions; D014874:Water Pollutants, Chemical; D004008:Diclofenac; D001262:Atenolol; D002244:Carbon; D020156:Salicylic Acid; D001241:Aspirin
keywords: Activated carbon; Adsorption; Emerging contaminant; Microcalorimetry; Pharmaceutically active compound; Wastewater