Contact
    Start Publications A thermodynamic approach to assess organic solute adsorption ...
    ←  Publication Finder
    Attension

    A thermodynamic approach to assess organic solute adsorption onto activated carbon in water

    Year: 2012

    Journal: Carbon 2012, 50 (10) pp 3774-3781, 20121211

    Authors: David J. de Ridder, Arne R.D. Verliefde, Bas G.J. Heijman, Simon Gelin, Manuel F.R. Pereira, Raquel P. Rocha, José L. Figueiredo, Gary L. Amy, Hans C. van Dijk

    Organizations: Delft University of Technology, P.O. Box 5048, 2600 GA Delft, The Netherlands; Ghent University, Coupure Links 653, B-9000 Gent, Belgium; École des Ponts Paristech, 6-8 Avenue Blaise Pascal, 77455 Marne-la-Vallée Cedex 2, France; Laboratório de Catálise e Materiais, Laboratório Associado LSRE/LCM, Faculdade de Engenharia, Universidade do Porto, 4200-465 Porto, Portugal, e King Abdullah University of Science and Technology, Thuwal, Saudi Arabia

    In this paper, the hydrophobicity of 13 activatedcarbons is determined by various methods; water vapour adsorption, immersion calorimetry, and contact angle measurements. The quantity and type of oxygen-containing groups on the activatedcarbon were measured and related to the methods used to measure hydrophobicity. It was found that the water-activatedcarbonadsorption strength (based on immersion calorimetry, contact angles) depended on both type and quantity of oxygen-containing groups, while water vapour adsorption depended only on their quantity. Activatedcarbon hydrophobicity measurements alone could not be related to 1-hexanol and 1,3-dichloropropene adsorption. However, a relationship was found between work of adhesion and adsorption of these solutes. The work of adhesion depends not only on activatedcarbon–water interaction (carbon hydrophobicity), but also on solute–water (solute hydrophobicity) and activatedcarbon–solute interactions. Our research shows that the work of adhesion can explain soluteadsorption and includes the effect of hydrogen bond formation between solute and activatedcarbon.