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Updated: Jun 2, 2026

Soil Lysimeter Excavation for Coupled Hydrological, Geochemical, and Microbiological Investigations
Published on: September 11, 2016
Experimental and theoretical assessment of the multi-domain flow behaviour in a waste body during leachate
A-J Tinet1, L Oxarango, R Bayard
1Laboratoire d'etude des Transferts en Hydrologie et Environnement, Universite de Grenoble, BP 53 38041, Grenoble Cedex 09, France. tinet@ujf-grenoble.fr
Abstract:
The optimisation of landfill operation is a key challenge for the upcoming years. A promising solution to improve municipal solid waste (MSW) management is the bioreactor technology. A meso-scale (around 1m(3)) experimental set-up was performed to study the effect of moisture control in low density conditions with different leachate injection operations and bioreactor monitoring including the use of a neutron probe. The moisture content distribution evolution demonstrates a multi-domain flow behaviour. A classic van Genuchten-Mualem description of the connected porosity proved insufficient to correctly describe the observed phenomena. A bimodal description of the connected porosity is proposed as solution and a connected/non-connected porosities numerical model was applied to the results. The model explains the experimental results reasonably well.
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