A computational fluid dynamics based model of the ex-situ remediation of hydrocarbon contaminated soils

T. Wu, M. Crapper

Research output: Contribution to journalArticlepeer-review

Abstract

Biopiles are a common treatment worldwide for the ex-situ remediation of contaminated soil. Much research has been carried out on understanding and modelling microbial degradation, but hitherto no study has attempted to model the effect on a biopile of its ambient surroundings. This paper presents a Computational Fluid Dynamics (CFD) approach to modelling a biopile under the influence of wind pressure, with and without forced aeration. In addition to the flow, temperature and bioreactions are simulated. Preliminary results indicate that the modelled flow within the pile is in qualitative accordance with a previous analytic solution, and that wind pressure and aeration have a significant effect on the evolution of temperature within the pile. Results also indicate that a very high proportion of contaminant loss from the pile is due to venting to the atmosphere, rather than to microbial degradation.

Original languageEnglish
Pages (from-to)262-270
Number of pages9
JournalDesalination
Volume248
Issue number1-3
DOIs
Publication statusPublished - 15 Nov 2009

Keywords

  • Biopile
  • Modelling
  • CFD
  • Wind
  • Aeration
  • Temperature
  • LESS-VOLATILE HYDROCARBONS
  • UNSATURATED ZONE
  • SOUTH-AFRICA
  • BIOREMEDIATION
  • AERATION
  • BIODEGRADATION
  • SIMULATION
  • TRANSPORT
  • SYSTEM

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  • University of Western Ontario

    Martin Crapper (Member)

    24 Jun 200931 Aug 2009

    Activity: Visiting an external institution typesResearch and Teaching at External Organisation

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