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Analysis of one-dimensional solute transport through porous media with spatially variable retardation factor

Chrysikopoulos Constantinos, Peter K. Kitanidis

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URIhttp://purl.tuc.gr/dl/dias/0C06BAC6-0CD9-417E-96F9-1E7B4F6AD0AE-
Αναγνωριστικόhttps://doi.org/10.1029/WR026i003p00437-
Γλώσσαen-
Μέγεθος10 pagesen
ΤίτλοςAnalysis of one-dimensional solute transport through porous media with spatially variable retardation factoren
ΔημιουργόςChrysikopoulos Constantinosen
ΔημιουργόςΧρυσικοπουλος Κωνσταντινοςel
ΔημιουργόςPeter K. Kitanidisen
ΠερίληψηA closed-form analytical small-perturbation (or first-order) solution to the one-dimensional advection-dispersion equation with spatially variable retardation factor is derived to investigate the transport of sorbing but otherwise nonreacting solutes in hydraulically homogeneous but geochemically heterogeneous porous formations. The solution is developed for a third- or flux-type inlet boundary condition, which is applicable when considering resident (volume-averaged) solute concentrations, and a semi-infinite porous medium. For mathematical simplicity it is hypothesized that the sorption processes are based on linear equilibrium isotherms and that the local chemical equilibrium assumption is valid. The results from several simulations, compared with predictions based on the classical advection-dispersion equation with constant coefficients, indicate that at early times, spatially variable retardation affects the transport behavior of sorbing solutes. The zeroth moments corresponding to constant and variable retardation are not necessarily equal. The impact of spatially variable retardation increases with increasing Péclet number. en
ΤύποςPeer-Reviewed Journal Publicationen
ΤύποςΔημοσίευση σε Περιοδικό με Κριτέςel
Άδεια Χρήσηςhttp://creativecommons.org/licenses/by/4.0/en
Ημερομηνία2015-09-20-
Ημερομηνία Δημοσίευσης1990-
Θεματική ΚατηγορίαAnalytical small-perturbation solutionen
Βιβλιογραφική ΑναφοράC. V. Chrysikopoulos ,P. K. Kitanidis , P.V. Roberts, "Analysis of one-dimensional solute transport through porous media with spatially variable retardation factor" , Wa. resourc. researc.,vol. 26, no. 3 ,pp.437-446,1990.doi :10.1029/WR026i003p00437en

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