Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Pore-scale simulations of concentration tails in heterogeneous porous media |
| 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. |
| Source | Journal of contaminant hydrology 205, pp. 47–56 |
| Keywords | Heterogeneous porous mediaAdvection-diffusionLattice Boltzmann methodBack diffusionRemediationTransport process |
| Journal | Journal of contaminant hydrology |
| Editor | Elsevier, Tokyo ;, Paesi Bassi |
| Year | 2017 |
| Type | Articolo in rivista |
| DOI | 10.1016/j.jconhyd.2017.08.003 |
| Authors | Di Palma, Paolo Roberto; Parmigiani, Andrea; Huber, Christian; Guyennon, Nicolas; Viotti, Paolo |
| Text | 379050 2017 10.1016/j.jconhyd.2017.08.003 ISI Web of Science WOS 000413382300005 Heterogeneous porous media Advection diffusion Lattice Boltzmann method Back diffusion Remediation Transport process Pore scale simulations of concentration tails in heterogeneous porous media Di Palma, Paolo Roberto; Parmigiani, Andrea; Huber, Christian; Guyennon, Nicolas; Viotti, Paolo IRSA CNR; ETH; Brown Univ; Sapienza Univ Rome 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. 205 Published version Articolo in rivista Elsevier 0169 7722 Journal of contaminant hydrology Journal of contaminant hydrology J. contam. hydrol. Journal of contaminant hydrology. paolorobertodipalma DI PALMA PAOLO ROBERTO nicolasdominique.guyennon GUYENNON NICOLAS DOMINIQUE |