2 Scopus citations

Abstract

In this work, a 3D computational tomography (CT) of the packing material of a laboratory column biofilter is used to model airflow containing three contaminants. The degradation equations for toluene, formaldehyde and benzo[α]pyrene (BaP), were one-way coupled to the CFD model. Physical validation of the model was attained by comparing pressure drops with experimental measurement, while experimental elimination capacities for the pollutants were used to validate the biodegradation kinetics. The validated model was used to assess the existence of channeling and to predict the impact of the three-dimensional porous geometry on the mass transfer of the contaminants in the gas phase. Our results indicate that a physically meaningful simulation can be obtained using the techniques and approach presented in this work, without the need of performing experiments to obtain macroscopic parameters such as gas-phase axial and radial dispersion coefficients and porosities.

Original languageEnglish
Article number124924
JournalChemosphere
Volume240
DOIs
StatePublished - Feb 2020

Bibliographical note

Funding Information:
The present research has been sponsored by CONICYT ? Chile (National Commission for Scientific and Technological Research, FONDEF IDeA in two stages N? ID4i10130). We would like to kindly thank Sandra Gutierrez and Emilio Muse from Cl?nica Universidad de los Andes, Chile for their help in obtaining the CT 3D images of the biofilter support.

Funding Information:
The present research has been sponsored by CONICYT – Chile ( National Commission for Scientific and Technological Research , FONDEF IDeA in two stages Nº ID4i10130). We would like to kindly thank Sandra Gutierrez and Emilio Muse from Clínica Universidad de los Andes, Chile for their help in obtaining the CT 3D images of the biofilter support.

Publisher Copyright:
© 2019 Elsevier Ltd

Keywords

  • Biofiltration
  • CFD
  • Computational tomography
  • Modeling
  • Volatile organic compounds

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