Author(s): M. Higashino; T. Kanda
Linked Author(s):
Keywords: Diffusional mass transfer; Dissolved substance; Sediment-water interface; Bottom sediment
Abstract: The process of mass transfer across sediment-water interface exerted by the effect of adsorption/desorption between solute and sediment particle is theoretically investigated. The obtained results are introduced to formulate the distribution of solute concentration in sediment and the vertical flux of diffusional scalar at the sediment-water interface. On the other hand, mass transfer through diffusive boundary layer is modeled by applying the analysis of heat transfer. By combining both, a model to estimate the released flux of dissolved substance from bottom sediment to flowing water is formulated as a function of flow velocity, parameters of adsorption and physical properties of sediment; water content of sediment and amount of dissolved substance contained in sediment.
Year: 1999