Water movement in soils is a key process that aff ects water quantity and quality in the environment. Movement of contaminants in soils is closely linked with the soil water fl ux and it is very important to properly evaluate these processes that occur in vadose zone. With development of new technologies more attention is dedicated to the use of numerical models to assess water fl ow behavior a...

The accidental overfilling of waste liquid from tank BX-102 at the Hanford Site in 1951 put about 10 t of U(VI) into the vadose zone. In order to understand the dominant geochemical reactions and transport processes that occurred during the initial infiltration and to help understand current spatial distribution, we simulated the waste liquid spilling event in laboratory sediment columns using ...

Long-term dewatering of groundwater is a necessary operation for mining safety in open-pit coal mines, as extensive might cause ecological problems due to dramatic changes moisture movement the soil, especially ecologically fragile areas. In order evaluate impact on vadose zone and vegetation, this paper presents quantitative methodology takes Baorixile mine study example. A long-term situ expe...

Chlorinated hydrocarbons (CHCs) are one of the pollutant groups most commonly found in hazardous waste sites. Understanding the transport and fate of these compounds in the vadose zone is crucial to identifying pollution sources, assessing the threat to groundwater, and evaluating the need and adequacy of cleanup. CHCs exist in various physical phases in the subsurface, linked by interphasal pr...

The occurrence of halogenated volatile organic compounds (HVOCs) in groundwater beneath several municipal solid waste landfills in Tucson, Arizona in the absence of significant liquid phase movement has suggested that vapor phase transport may be the principal process transporting HVOCs from the vadose zone into the water table. The results of mathematical modeling of these transport processes ...