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Maire J, Joubert A, Kaifas D, et al. Assessment of flushing methods for the removal of heavy chlorinated compounds DNAPL in an alluvial aquifer. Sci Total Environ. 2017;612:1149-1158doi: 10.1016/j.scitotenv.2017.08.309.
Maire, J., Joubert, A., Kaifas, D., Invernizzi, T., Marduel, J., Colombano, S., Cazaux, D., Marion, C., Klein, P. Y., Dumestre, A., & Fatin-Rouge, N. (2018). Assessment of flushing methods for the removal of heavy chlorinated compounds DNAPL in an alluvial aquifer. The Science of the total environment, 6121149-1158. https://doi.org/10.1016/j.scitotenv.2017.08.309
Maire, Julien, et al. "Assessment of flushing methods for the removal of heavy chlorinated compounds DNAPL in an alluvial aquifer." The Science of the total environment vol. 612 (2018): 1149-1158. doi: https://doi.org/10.1016/j.scitotenv.2017.08.309
Maire J, Joubert A, Kaifas D, Invernizzi T, Marduel J, Colombano S, Cazaux D, Marion C, Klein PY, Dumestre A, Fatin-Rouge N. Assessment of flushing methods for the removal of heavy chlorinated compounds DNAPL in an alluvial aquifer. Sci Total Environ. 2018 Jan 15;612:1149-1158. doi: 10.1016/j.scitotenv.2017.08.309. Epub 2017 Sep 08. PMID: 28892859.
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Sci Total Environ. 2018 Jan 15;612:1149-1158. doi: 10.1016/j.scitotenv.2017.08.309. Epub 2017 Sep 08.

Assessment of flushing methods for the removal of heavy chlorinated compounds DNAPL in an alluvial aquifer.

The Science of the total environment

Julien Maire, Antoine Joubert, Delphine Kaifas, Thomas Invernizzi, Julien Marduel, Stéfan Colombano, David Cazaux, Cédric Marion, Pierre-Yves Klein, Alain Dumestre, Nicolas Fatin-Rouge

Affiliations

  1. Institut UTINAM, Université de Bourgogne Franche-Comté, 16 Route de Gray, 25000 Besançon, France.
  2. SERPOL, 2 Chemin du Génie, 69633 Vénissieux, France.
  3. Sol Environment, 22 Rue Lavoisier, 92000 Nanterre, France.
  4. BRGM, 3 Avenue Claude Guillemin, 45060 Orléans, France.
  5. Inovyn, Avenue de la République, 39500 Tavaux, France.
  6. Institut UTINAM, Université de Bourgogne Franche-Comté, 16 Route de Gray, 25000 Besançon, France. Electronic address: [email protected].

PMID: 28892859 DOI: 10.1016/j.scitotenv.2017.08.309

Abstract

Immiscible mobilization and foam flushing were assessed as low surfactant consuming technologies, for the enhanced recovery of dense non-aqueous phase liquid (DNAPL) residual at a site contaminated by heavy chlorinated compounds. Preliminary experiments in well-controlled conditions demonstrated the phenomena involved in these remediation technologies and their limitations. Furthermore, we characterized the technologies according to by their surfactant consumption (per kg of DNAPL recovered) and the final DNAPL saturation reached. Surfactant foam flushing (SFF) produced lower DNAPL saturation than immiscible mobilization, thanks to its higher viscosity. However, its efficiency is strongly correlated to the pressure gradient (▽P) used during injection, and that is limited by risks of soil fracturing. The two technologies were tested in field cells (10m×10m×10m) delimited by cement/bentonite walls anchored in the clayey substratum. The deepest soil layer was the most contaminated. It was composed of silt-sandy soil and had an average hydraulic conductivity of 10

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Keywords: Heavy chlorinated compounds; Immiscible mobilization; In situ DNAPL remediation; Surfactant foam flushing

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