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Abstract:

The determination of the dispersion and adsorption parameters (either for the Freundlich or Langmuir adsorption isotherm models) can be determined by optimising the matching of the numerical solution of the adsorption-convection dispersion equation with the experimental effluent curves measured on displacement tests in core material using multivariable optimisation techniques. The numerical solutions are obtained by solving the convection-dispersion-nonlinear adsorption equation by finite differences using the Crank-Nicolson method with iterations to account for nonlinearities. The optimisation routines are used to find the parameters that give the global minimum error between predicted and measured effluent curves. The results show that whenever the three parameters (the dispersion coefficient and two adsorption parameters) are simultaneously determined, the solution is not unique and depends on the adsorption model used. The nonuniqueness can be removed by performing an independent test such as a static adsorption test. © 1993.

Registro:

Documento: Artículo
Título:On the simultaneous determination of dispersion and nonlinear adsorption parameters from displacement tests by using numerical models and optimisation techniques
Autor:Grattoni, C.A.; Dawe, R.A.; Bidner, M.S.
Filiación:Mineral Resources Engineering, Imperial College, London, SW7 2AZ, United Kingdom
Laboratorio de Ingenieria de Reservorios, Universidad de Buenos Aires, Pabellon Industrias, Ciudad Universitaria, 1428 Buenos Aires, Argentina
Palabras clave:adsorption; dispersion; displacement tests; numerical models; Optimization techniques; parameters; adsorption/dispersion; displacement test; numerical model; optimisation; parameter determination; solute transport; Adsorption; Dispersions; Finite difference method; Materials testing; Mathematical models; Nonlinear equations; Optimization; Parameter estimation; Porous materials; Adsorption-convection dispersion equation; Crank-Nicolson method; Displacement tests; Effluent curves; Freundlich adsorption isotherms; Langmuir adsorption isotherms; Multivariable optimization technique; Flow of fluids; Adsorption; Dispersion; Modelling-Mathematical; Models; Numerical; Optimization
Año:1993
Volumen:16
Número:2
Página de inicio:127
Página de fin:135
DOI: http://dx.doi.org/10.1016/0309-1708(93)90003-X
Título revista:Advances in Water Resources
Título revista abreviado:Adv. Water Resour.
ISSN:03091708
CODEN:AWRED
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03091708_v16_n2_p127_Grattoni

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Citas:

---------- APA ----------
Grattoni, C.A., Dawe, R.A. & Bidner, M.S. (1993) . On the simultaneous determination of dispersion and nonlinear adsorption parameters from displacement tests by using numerical models and optimisation techniques. Advances in Water Resources, 16(2), 127-135.
http://dx.doi.org/10.1016/0309-1708(93)90003-X
---------- CHICAGO ----------
Grattoni, C.A., Dawe, R.A., Bidner, M.S. "On the simultaneous determination of dispersion and nonlinear adsorption parameters from displacement tests by using numerical models and optimisation techniques" . Advances in Water Resources 16, no. 2 (1993) : 127-135.
http://dx.doi.org/10.1016/0309-1708(93)90003-X
---------- MLA ----------
Grattoni, C.A., Dawe, R.A., Bidner, M.S. "On the simultaneous determination of dispersion and nonlinear adsorption parameters from displacement tests by using numerical models and optimisation techniques" . Advances in Water Resources, vol. 16, no. 2, 1993, pp. 127-135.
http://dx.doi.org/10.1016/0309-1708(93)90003-X
---------- VANCOUVER ----------
Grattoni, C.A., Dawe, R.A., Bidner, M.S. On the simultaneous determination of dispersion and nonlinear adsorption parameters from displacement tests by using numerical models and optimisation techniques. Adv. Water Resour. 1993;16(2):127-135.
http://dx.doi.org/10.1016/0309-1708(93)90003-X