Granulometry and surfactants, key factors in desorption and biodegradation (T. Versicolor) of pahs in soil and groundwater

P. Rodríguez-Escales, E. Borràs, M. Sarra, A. Folch

    Research output: Contribution to journalArticleResearchpeer-review

    13 Citations (Scopus)

    Abstract

    High hydrophobicity of polycyclic aromatic hydrocarbons (PAHs) is the most limiting factor for the remediation of polluted soils and aquifers. The present study analyzes the effect of three nonionic surfactants (Tween 80, BS-400, and Gold Crew) and the granulometry of soil (1 %, 5 %, 10 %, and 20 % of clay and silt) on desorption of a PAH mixture (fluorene, phenanthrene, anthracene, and pyrene). As a general trend, decrease of fine material content and increase of surfactant concentration raises desorption. However, some particularities have to be considered depending on granulometry together with the surfactant applied. Furthermore, increase of fine material content tends to reduce the importance of the PAH properties, e.g., K ow and solubility, in desorption. To complete the remediation process, biodegradation by Trametes versicolor was tested with the surfactant Tween 80. Results indicate that a high concentration of surfactant does not affect the efficiency of fungus bioremediation. Nevertheless, high fine material content in soil/aquifer can reduce the degradation rate. Moreover, desorption and biodegradation used synergically guarantee better overall results in the remediation of soils polluted by PAH mixtures than other methods that separate desorption and remediation. © 2013 Springer Science+Business Media Dordrecht.
    Original languageEnglish
    Article number1422
    JournalWater, Air, and Soil Pollution
    Volume224
    DOIs
    Publication statusPublished - 11 Jan 2013

    Keywords

    • Fine material
    • Ligninolytic fungus
    • Polycyclic aromatic hydrocarbons (PAHs)
    • Remediation

    Fingerprint

    Dive into the research topics of 'Granulometry and surfactants, key factors in desorption and biodegradation (T. Versicolor) of pahs in soil and groundwater'. Together they form a unique fingerprint.

    Cite this