Toxic organic contaminants may enter the subsurface as slightly soluble and volatile
nonaqueous phase liquids (NAPLs) or as dissolved solutes resulting in contaminant plumes …

Per‐and polyfluoroalkyl substances (PFAS) are emerging contaminants of critical concern.
As surfactants, PFAS tend to accumulate at air‐water interfaces and may stay in the vadose …

We critically examine historical and recent studies of flow and transport at the local scale
within the capillary fringe (CF). The characterization of subsurface pathways traveled by …

PFAS are emergent contaminants of which the fate and transport in the environment remain
poorly understood. As surfactants, adsorption at air–water and solid–water interfaces in soils …

Leachate recirculation in municipal solid waste (MSW) landfills operated as bioreactors
offers significant economical and environmental benefits. Subsurface leachate recirculation …

We have studied the combined imbibition and evaporation of surfactant solutions into thin
porous media by means of experiments and numerical simulations. Solutions of anionic and …

Per-and polyfluoroalkyl substances, and other chemicals in aqueous fire-fighting foam
(AFFF), accumulate at air–water interfaces in the vadose zone, reducing interfacial tension …

Leachate recirculation or liquid injection in municipal solid waste landfills offers economic
and environmental benefits. The key objective of this study was to carry out numerical …

Surfactants can reduce soil water retention by changing the surface tension of water and the
contact angle between the liquid and solid phases. As a result, water flow and solute …

Surfactants may occur naturally in the subsurface or may be introduced anthropogenically.
Because of their ability to reduce surface tension and modify the solid–liquid contact angle …