Water, Air, & Soil Pollution

, Volume 223, Issue 5, pp 2463–2472

Adsorptive Removal of Pentachlorophenol by Anthracophyllum discolor in a Fixed-Bed Column Reactor

Authors

    • Scientific and Technological Bioresource NucleusUniversidad de La Frontera
  • Gonzalo R. Tortella
    • Scientific and Technological Bioresource NucleusUniversidad de La Frontera
  • Raphael Cuevas
    • Scientific and Technological Bioresource NucleusUniversidad de La Frontera
  • Mara Cea
    • Scientific and Technological Bioresource NucleusUniversidad de La Frontera
  • Susana Rodríguez-Couto
    • CEIT, Unit of Environmental Engineering
  • María Cristina Diez
    • Chemical Engineering DepartmentUniversidad de La Frontera
Article

DOI: 10.1007/s11270-011-1039-7

Cite this article as:
Rubilar, O., Tortella, G.R., Cuevas, R. et al. Water Air Soil Pollut (2012) 223: 2463. doi:10.1007/s11270-011-1039-7

Abstract

This study investigates pentachlorophenol (PCP) adsorption by the white-rot fungus Anthracophyllum discolor in a fixed-bed column reactor. PCP adsorption at different concentrations (20, 30, and 50 mg L−1) and pH values (5.0, 5.5, and 6.0) was determined and modeled using the Thomas model. Fourier transform infrared spectroscopy (FTIR) was used to identify functional groups of biomass that may participate in the interaction of PCP. The biosorption capacity of A. discolor was pH-dependent, and the PCP adsorbed increased with the decrease in the pH solution. Acid pH values of the influent gave an increase in saturation time in all PCP concentrations. By contrast, the increase in PCP concentration caused that the binding sites were filled quickly, resulting in a decrease in saturation time. The Thomas model was found suitable for describing the entire dynamic of the column with respect to the PCP concentration and pH of the solution. FTIR results showed that amines, carboxylates, alkanes, and C–O groups might participate in the PCP adsorption on the biomass surface. It was concluded that A. discolor biomass was a good adsorbent for PCP removal from influent with mainly acidic pH.

Keywords

BiosorptionPentachlorophenolAnthracophyllum discolorFixed-bed columnThomas model

Copyright information

© Springer Science+Business Media B.V. 2011