Analytical solution for diffusion of VOCs through composite landfill liners / Peter John Cleall in Journal of geotechnical and geoenvironmental engineering, Vol. 137 N° 9 (Septembre 2011)  

Analytical solution for diffusion of VOCs through composite landfill liners [texte imprimé] / Peter John Cleall, Auteur ; Yu-Chao Li, Auteur . - 2012 . - pp. 850-854.
Géotechnique
Langues : Anglais (eng)
in Journal of geotechnical and geoenvironmental engineering > Vol. 137 N° 9 (Septembre 2011) . - pp. 850-854

Mots-clés :	Analytical techniques Diffusion Landfills Liners
Index. décimale :	624.1 Infrastructures.Ouvrages en terre. Fondations. Tunnels
Résumé :	Analytical solutions are presented for analyzing volatile organic compound (VOC) diffusion through intact composite landfill liners for two scenarios with boundary conditions at the base of either a VOC concentration of zero or a VOC mass flux of zero. A time-dependent concentration top boundary condition is included in the presented analytical solutions to model typical variations of VOC concentration in the leachate over time. The presented solutions are verified against alternative numerical solutions and applied to analyze dichloromethane diffusion through a composite liner. The analytical solutions are found to provide useful predictions of VOC concentration and mass flux for the design of composite liners. VOC concentrations and fluxes at the base of the composite liner at 30 years predicted by consideration of representative transient variation in leachate concentration, for an example problem, are nearly half of those when a constant leachate concentration assumed.
DEWEY :	624.1
ISSN :	1090-0241
En ligne :	http://ascelibrary.org/gto/resource/1/jggefk/v137/i9/p850_s1?isAuthorized=no