Influence of sorption heterogeneity on the transport of nonlinearly sorbing solutes

Le résumé fourni par la source

The effect of spatially variable aquifer parameters such as sorption capacity and hydraulic conductivity on reactive solute transport was investigated by stochastic numerical simulations. Heterogeneity of the sorption capacity was about half as large as heterogeneity of the hydraulic conductivity. Variable Freundlich sorption parameters had less influence on the expected plume velocity than on the spatial distribution (second order moment) of the dissolved and sorbed mass. A comparison between simulated and real tracer plumes revealed significant discrepancies concerning the dissolved concentrations. Due to their order of magnitude these discrepancies cannot be attributed to physico-chemical sediment heterogeneity.

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