title: Multi-component adsorption of copper, nickel and zinc from aqueous solutions onto activated carbon prepared from date stones.
abstract: The removal of Cu(2+), Ni(2+), and Zn(2+) ions from their multi-component aqueous mixture by sorption on activated carbon prepared from date stones was investigated. In the batch tests, experimental parameters were studied, including solution pH, contact time, initial metal ions concentration, and temperature. Adsorption efficiency of the heavy metals was pH-dependent and the maximum adsorption was found to occur at around 5.5 for Cu, Zn, and Ni. The maximum sorption capacities calculated by applying the Langmuir isotherm were 18.68 mg/g for Cu, 16.12 mg/g for Ni, and 12.19 mg/g for Zn. The competitive adsorption studies showed that the adsorption affinity order of the three heavy metals was Cu(2+) > Ni(2+) > Zn(2+). The test results using real wastewater indicated that the prepared activated carbon could be used as a cheap adsorbent for the removal of heavy metals in aqueous solutions.
authors.affiliation: Laboratoire Eau Energie et Environnement, Ecole Nationale d'Ingénieurs de Sfax, B.P.W 3038, Sfax, Tunisia. bouhamed.farah@gmail.com.
authors.forename: F
authors.identifier: http://orcid.org/0000-0002-0648-2843
authors.initials: F
authors.lastname: Bouhamed
authors.affiliation: Laboratoire Eau Energie et Environnement, Ecole Nationale d'Ingénieurs de Sfax, B.P.W 3038, Sfax, Tunisia.
authors.forename: Z
authors.initials: Z
authors.lastname: Elouear
authors.affiliation: Laboratoire Eau Energie et Environnement, Ecole Nationale d'Ingénieurs de Sfax, B.P.W 3038, Sfax, Tunisia.
authors.forename: J
authors.initials: J
authors.lastname: Bouzid
authors.affiliation: Equipe Chimie Analytique et Marine, Université des Sciences et Technologies de Lille UMR CNRS-Lille1 8157 Geosystemes, Bât C8, 59655, Villeneuve d'Ascq Cedex, France.
authors.forename: B
authors.initials: B
authors.lastname: Ouddane
mesh_terms: D000327:Adsorption; D002606:Charcoal / Q000737:chemistry*; D003300:Copper / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D019216:Metals, Heavy / Q000032:analysis / Q000737:chemistry*; D009532:Nickel / Q000737:chemistry; D012996:Solutions; D014865:Waste Disposal, Fluid / Q000379:methods*; D062065:Wastewater; D014867:Water; D014874:Water Pollutants, Chemical / Q000032:analysis / Q000737:chemistry*; D015032:Zinc / Q000737:chemistry
chemical_list: D002606:Charcoal; D003300:Copper; D019216:Metals, Heavy; D009532:Nickel; D012996:Solutions; D062065:Wastewater; D014867:Water; D014874:Water Pollutants, Chemical; D015032:Zinc
keywords: Activated carbon; Competitive adsorption; Heavy metals; Wastewater
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