The retention of contaminants in the finest and less-conductive regions of natural aquifer is known to strongly affect the decontamination of polluted aquifers. In fact, contaminant transfer from low to high mobility regions at the back end of a contaminant plume (i.e. back diffusion) is responsible for the long-term release of contaminants during remediation operation. In this paper, we perform pore-scale calculations for the transport of contaminant through heterogeneous porous media composed of low and high mobility regions with two objectives: (i) study the effect of permeability contrast and solute transport conditions on the exchange of solutes between mobile and immobile regions and (ii) estimate the mass of contaminants sequestered in low mobility regions based on concentration breakthrough curves.

Pore-scale simulations of concentration tails in heterogeneous porous media / DI PALMA, PAOLO ROBERTO; Parmigiani, Andrea; Huber, Christian; Guyennon, Nicolas; Viotti, Paolo. - In: JOURNAL OF CONTAMINANT HYDROLOGY. - ISSN 0169-7722. - ELETTRONICO. - 205:(2017), pp. 47-56. [10.1016/j.jconhyd.2017.08.003]

Pore-scale simulations of concentration tails in heterogeneous porous media

DI PALMA, PAOLO ROBERTO
;
VIOTTI, Paolo
2017

Abstract

The retention of contaminants in the finest and less-conductive regions of natural aquifer is known to strongly affect the decontamination of polluted aquifers. In fact, contaminant transfer from low to high mobility regions at the back end of a contaminant plume (i.e. back diffusion) is responsible for the long-term release of contaminants during remediation operation. In this paper, we perform pore-scale calculations for the transport of contaminant through heterogeneous porous media composed of low and high mobility regions with two objectives: (i) study the effect of permeability contrast and solute transport conditions on the exchange of solutes between mobile and immobile regions and (ii) estimate the mass of contaminants sequestered in low mobility regions based on concentration breakthrough curves.
2017
Advection-diffusion; back diffusion; heterogeneous porous media; lattice Boltzmann method; remediation; transport process; environmental chemistry; water science and technology
01 Pubblicazione su rivista::01a Articolo in rivista
Pore-scale simulations of concentration tails in heterogeneous porous media / DI PALMA, PAOLO ROBERTO; Parmigiani, Andrea; Huber, Christian; Guyennon, Nicolas; Viotti, Paolo. - In: JOURNAL OF CONTAMINANT HYDROLOGY. - ISSN 0169-7722. - ELETTRONICO. - 205:(2017), pp. 47-56. [10.1016/j.jconhyd.2017.08.003]
File allegati a questo prodotto
File Dimensione Formato  
DiPalma_Pore-scale_2017.pdf

solo gestori archivio

Tipologia: Versione editoriale (versione pubblicata con il layout dell'editore)
Licenza: Tutti i diritti riservati (All rights reserved)
Dimensione 1.13 MB
Formato Adobe PDF
1.13 MB Adobe PDF   Contatta l'autore

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1005435
Citazioni
  • ???jsp.display-item.citation.pmc??? 0
  • Scopus 11
  • ???jsp.display-item.citation.isi??? 10
social impact