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Influence of pore size distribution on the adsorption of phenol on PET-based activated carbons.
Lorenc-Grabowska, Ewa; Diez, María A; Gryglewicz, Grazyna.
Afiliação
  • Lorenc-Grabowska E; Wroclaw University of Technology, Faculty of Chemistry, Department of Polymer and Carbonaceous Materials, Gdanska 7/9, 50-344 Wroclaw, Poland. Electronic address: ewa.lorenc.grabowska@pwr.edu.pl.
  • Diez MA; Instituto Nacional del Carbón, INCAR-CSIC, c/ Francisco Pintado Fe 26, 33011 Oviedo, Spain. Electronic address: madiez@incar.csic.es.
  • Gryglewicz G; Wroclaw University of Technology, Faculty of Chemistry, Department of Polymer and Carbonaceous Materials, Gdanska 7/9, 50-344 Wroclaw, Poland.
J Colloid Interface Sci ; 469: 205-212, 2016 May 01.
Article em En | MEDLINE | ID: mdl-26890386
The role of pore size distribution in the adsorption of phenol in aqueous solutions on polyethylene terephthalate (PET)-based activated carbons (ACs) has been analyzed. The ACs were prepared from PET and mixtures of PET with coal-tar pitch (CTP) by means of carbonization and subsequent steam and carbon dioxide activation at 850 and 950 °C, respectively. The resultant ACs were characterized on the basis of similarities in their surface chemical features and differences in their micropore size distributions. The adsorption of phenol was carried out in static conditions at ambient temperature. The pseudo-second order kinetic model and Langmuir model were found to fit the experimental data very well. The different adsorption capacities of the ACs towards phenol were attributed to differences in their micropore size distributions. Adsorption capacity was favoured by the volume of pores with a size smaller than 1.4 nm; but restricted by pores smaller than 0.8 nm.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: J Colloid Interface Sci Ano de publicação: 2016 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: J Colloid Interface Sci Ano de publicação: 2016 Tipo de documento: Article