Factors affecting preferential flow and transport in the vadose zone need to be investigated by experiments and simulations to protect groundwater against surface applied chemicals. The objectives of this study were to investigate the effects of several factors (soil structure, initial soil water content (SWC), and application rate) and their interactions on the extent of preferential flow and ...

Expansion of human activities causes dispersion of pollutants in the subsurface environment. The fate and movement of dissolved substances in soils and groundwater has generated considerable interest out of concern for the quality of the subsurface environment. Many analytical solutions for partial differential equations exist in soil science. Numerical solutions are more general, and often mor...

Abstract. Stony soils that have a considerable amount of rock fragments (RFs) are widespread around the world. However, experiments to determine effective soil hydraulic properties (SHPs) stony soils, i.e., water retention curve (WRC) and conductivity (HCC), challenging. Installation measurement devices sensors in these is difficult, data less reliable because their high local heterogeneity. Th...

In view of the potential soil leaching risk reuse fertilizer reclaimed from micro-flush sanitary wastewater, batch tests adsorption and degradation, column percolation test multi-stage box were adopted. The characteristics leachate after interaction between soil, as well changes attributes in system, analyzed. After obtaining correlation coefficients solute transport through above experiments, ...

This study investigated the ability of a HYDRUS 1D model for predicting vertical distribution potassium iodine (200 ppm) in soil columns after amendment with five different common remediation materials (gypsum, lime, fly ash, charcoal, and sawdust) at rate 2.5% (w/w), relative to an unamended control soil. Results showed that soil, leaching was decreased by all amendments but magnitude decrease...

0022-1694/$ see front matter 2009 Elsevier B.V. A doi:10.1016/j.jhydrol.2009.10.023 * Corresponding author. Tel.: +49 (0)2461 618607. E-mail address: s.huisman@fz-juelich.de (J.A. Huis Coupled hydrogeophysical inversion aims to improve the use of geophysical data for hydrological model parameterization. Several numerical studies have illustrated the feasibility and advantages of a coupled appro...