Author(s): Ekkehard Holzbecher
Linked Author(s): Ekkehard Holzbecher
Keywords: No keywords
Abstract: The hyporheic zone in fluvial, lacustrine and marine sediments has been recognized as being highly relevant for biogeochemical cycles in the environment. The general description of solute transport in the hyporheic zone between surface water and groundwater has to take exchange between the fluid and solid sediments into account. For general 2-phase environments we showed that in case of equilibria between phase concentrations the mathematical formulation can be simplified considerably by the introduction of adjustment factors (here referred to as R-factors) for advection, diffusion and degradation processes. The mathematical derivation follows the concept of retardation factors, which is well established in porous medium studies in hydrogeology and the material sciences.
Year: 2022