title: Performance of different carbonaceous materials for emerging pollutants adsorption.
abstract: The adsorption of three representative emerging pollutants over different kinds of carbonaceous adsorbents has been studied in this work. The adsorbates were nalidixic acid (NAL, representative of a pharmaceutical), 1,8-dichlorooctane (DCO, a chloroparaffin) and methyl-phenoxy-ethanol (MPET, a surfactant). Activated carbons, carbon nanofibers, carbon nanotubes and high surface area graphites have been tested as adsorbents. Adsorption isotherms, carried out in a batch system, were fitted using both a Langmuir and a Freundlich model. It was shown that the capacity of adsorption follows the order DCO≫NAL>MPET for all the adsorbents, and among the adsorbents, the external morphology (surface area and mesoporous volume) is the key parameter. The results from thermodynamic analysis show, however, that both morphological and chemical properties of both adsorbates and adsorbents influenced their behavior.
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
mesh_terms: D000327:Adsorption; D001555:Benzene Derivatives / Q000737:chemistry*; D002244:Carbon / Q000737:chemistry*; D000431:Ethanol / Q000031:analogs & derivatives* / Q000737:chemistry; D006846:Hydrocarbons, Halogenated / Q000737:chemistry*; D009268:Nalidixic Acid / Q000737:chemistry*; D009795:Octanes / Q000737:chemistry*; 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; D006846:Hydrocarbons, Halogenated; D009795:Octanes; D014874:Water Pollutants, Chemical; D009268:Nalidixic Acid; D000431:Ethanol; D002244:Carbon
keywords: Alkylphenoletoxilates; CNFs; CNTs; Emerging water pollutants; Mesoporous carbons; Quinolones