Fungal permeable reactive barrier to remediate groundwater in an artificial aquifer

Albert Folch, Marcel Vilaplana, Leila Amado, Teresa Vicent, Glòria Caminal

Research output: Contribution to journalArticleResearchpeer-review

7 Citations (Scopus)

Abstract

Biobarriers, as permeable reactive barriers (PRBs), are a common technology that mainly uses bacteria to remediate groundwater in polluted aquifers. In this study, we propose to use Trametes versicolor, a white-rot fungus, as the reactive element because of its capacity to degrade a wide variety of highly recalcitrant and xenobiotic compounds. A laboratory-scale artificial aquifer was constructed to simulate groundwater flow under real conditions in shallow aquifers. Orange G dye was chosen as a contaminant to visually monitor the hydrodynamic behaviour of the system and any degradation of the dye by the fungus. Batch experiments at different pH values (6 and 7) and several temperatures (15. °C, 18. °C, 20. °C and 25. °C) were performed to select the appropriate residence time and glucose consumption rate required for continuous treatment. The maximum Orange G degradation was 97%. Continuous degradation over 85% was achieved for more than 8 days. Experimental results indicate for the first time that this fungus can potentially be used as a permeable reactive barrier in real aquifers. © 2013 Elsevier B.V.
Original languageEnglish
Pages (from-to)554-560
JournalJournal of Hazardous Materials
Volume262
DOIs
Publication statusPublished - 15 Nov 2013

Keywords

  • Biobarrier
  • Hydrogeology
  • Subsurface flow
  • Trametes versicolor
  • White-rot fungi

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