title: Adsorption of emerging pollutants on functionalized multiwall carbon nanotubes.
abstract: Adsorption of three representative emerging pollutants - 1,8-dichlorooctane, nalidixic acid and 2-(4-methylphenoxy)ethanol- on different carbon nanotubes was studied in order to determine the influence of the morphological and chemical properties of the materials on their adsorption properties. As adsorbents, multiwall carbon nanotubes (MWCNTs) without functionalization and with oxygen or nitrogen surface groups, as well as carbon nanotubes doped with nitrogen were used. The adsorption was studied in aqueous phase using batch adsorption experiments, results being fitted to both Langmuir and Freundlich models. The adsorption capacity is strongly dependent on both the hydrophobicity of the adsorbates and the morphology of the adsorbents. Thermodynamic parameters were determined observing strong interactions between the aromatic rings of the emerging pollutant and the nitrogen modified adsorbents.
authors.affiliation: Department of Chemical and Environmental Engineering, University of Oviedo, Faculty of Chemistry, Julián Clavería s/n, 33006 Oviedo, Spain.
authors.forename: Yolanda
authors.initials: Y
authors.lastname: Patiño
authors.affiliation: Department of Chemical and Environmental Engineering, University of Oviedo, Faculty of Chemistry, Julián Clavería s/n, 33006 Oviedo, Spain.
authors.forename: Eva
authors.initials: E
authors.lastname: Díaz
authors.affiliation: Department of Chemical and Environmental Engineering, University of Oviedo, Faculty of Chemistry, Julián Clavería s/n, 33006 Oviedo, Spain. Electronic address: sordonez@uniovi.es.
authors.forename: Salvador
authors.initials: S
authors.lastname: Ordóñez
authors.affiliation: Instituto de Catálisis y Petroleoquímica, CSIC, c/Marie Curie No. 2, Cantoblanco, 28049 Madrid, Spain; Dpto. Química Inorgánica y Técnica, Fac. de Ciencias, UNED, C/ Senda del Rey n° 9, 28040 Madrid, Spain.
authors.forename: Esteban
authors.initials: E
authors.lastname: Gallegos-Suarez
authors.affiliation: Dpto. Química Inorgánica y Técnica, Fac. de Ciencias, UNED, C/ Senda del Rey n° 9, 28040 Madrid, Spain.
authors.forename: Antonio
authors.initials: A
authors.lastname: Guerrero-Ruiz
authors.affiliation: Instituto de Catálisis y Petroleoquímica, CSIC, c/Marie Curie No. 2, Cantoblanco, 28049 Madrid, Spain.
authors.forename: Inmaculada
authors.initials: I
authors.lastname: Rodríguez-Ramos
mesh_terms: D000327:Adsorption; D001555:Benzene Derivatives; D000431:Ethanol / Q000031:analogs & derivatives; D015386:Hazardous Substances; D006846:Hydrocarbons, Halogenated; D037742:Nanotubes, Carbon / Q000737:chemistry*; D009584:Nitrogen; D009795:Octanes; D013816:Thermodynamics; D014874:Water Pollutants, Chemical / Q000737:chemistry*; D018508:Water Purification / Q000379:methods
chemical_list: C515397:1,8-dichlorooctane; C577870:2-(4-methylphenoxy)ethanol; D001555:Benzene Derivatives; D015386:Hazardous Substances; D006846:Hydrocarbons, Halogenated; D037742:Nanotubes, Carbon; D009795:Octanes; D014874:Water Pollutants, Chemical; D000431:Ethanol; D009584:Nitrogen
keywords: Alkylphenoletoxilates; Chloroparaffins; Emerging water pollutants; Functionalized CNTs; Quinolones