A flexible computer code for modelling transport in porous media: impact

Jauzein, M.; André, Christine; Margrita, R.; Sardin, M.; Schweich, D.

doi:10.1016/0016-7061(89)90021-9

Cited by 43 publications

(23 citation statements)

References 9 publications

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“…The association of reactors in series and parallel (Villermaux, 1993), originally developed for process engineering, was adopted to model the reactive transfer of pollutants in soils using the IMPACT code (Jauzein et al, 1989) or Networks of Chemical Reactors (NCR; Baranger and Kervèvan, 1998). It has also been used in the mining field to model tailings effluents (Altmann, 1995) and the composition of water discharge from flooded mines (Collon et al, 2002b).…”

Section: Network Of Chemical Reactors (Ncr)mentioning

confidence: 99%

Modelling the evolution of water quality in abandoned mines of the Lorraine Iron Basin

Collon¹,

Fabriol²,

Buès³

2006

Journal of Hydrology

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Section: Network Of Chemical Reactors (Ncr)mentioning

confidence: 99%

Modelling the evolution of water quality in abandoned mines of the Lorraine Iron Basin

Collon¹,

Fabriol²,

Buès³

2006

Journal of Hydrology

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“…Having a quantitative description in terms of a small number of simple chemical reactions at hand, the outcome of column breakthrough experiments can be predicted with any standard transport code [17][18][19]. In our case of a chromatographic column with two components (cadmium and zinc), the basic transport equations with instantaneous adsorption equilibrium are [3,4,8,17,18,19] ~OQcd _OQcd…”

Section: Prediction Of Column Experimentsmentioning

confidence: 99%

“…In our case of a chromatographic column with two components (cadmium and zinc), the basic transport equations with instantaneous adsorption equilibrium are [3,4,8,17,18,19] ~OQcd _OQcd…”

Section: Prediction Of Column Experimentsmentioning

confidence: 99%

“…solution of the convection disPersion equation, Equation (5), for sufficiently small dispersion coefficients (in practice for Pe > 50). We have used the implementation of this model in the code IMPACT [18]. The boundary conditions are given by vanishing concentrations in all mixing cells at the beginning of the experiment, flux continuity between adjacent cells and known feed concentrations into the first cell (column inlet).…”

Section: Prediction Of Column Experimentsmentioning

confidence: 99%

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Quantitative description of multi-component reactive transport in porous media: An empirical approach

et al. 1996

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We propose a general method for the description of multi-component reactive transport in porous media. The approach is based on the local equilibrium assumption and consists of four steps: (i) measurement of the adsorbed amounts of all components of interest by means of laboratory batch experiments, (ii) construction of a simple, empirical binding model consistent with the experimental data by means of constrained, regularized least-squares, (iii) calculations of multi-component breakthrough curves based on numerical solutions of the transport equations coupled to the empirical binding model, (iv) verification of these model predictions with laboratory column experiments. We demonstrate the applicability of the procedure by investigating simultaneous transport of cadmium and zinc at constant pH in a silica sand column.

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“…Computer programmes such as PHREEQC (Parkhurst and Appelo, 1999) or IMPACT (Jauzein et al, 1989) are useful for modelling reactive transport in porous media, but the best fit of the chloride breakthrough curve must be calculated through trial and error. CXTFIT by Toride et al (1995), available from the US …”

mentioning

confidence: 99%

Influence of transport parameters and chemical properties of the sediment in experiments to measure reactive transport in seawater intrusion

Botella

Gomis-Yagües

Ruiz-Beviá

2008

Journal of Hydrology

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A study of seawater intrusion under controlled laboratory conditions using multicomponent heterovalent 10 chromatography is presented. The aim was to understand the influence of several variables on hydrogeochemical transport, especially on gypsum precipitation and cationic exchange. In addition, the study aimed to provide experimental data on how water composition changes during simulated seawater intrusion. 15The experimental results show that dispersion modifies the shape of the elution curves for the different solutes for processes such as cation exchange and precipitation-dissolution. The maxima and minima of these curves are very smooth, and entirely absent in several instances. Altering the cation exchange capacity of the sediment produced changes in the height of the calcium peak and in the maxima and minima of magnesium. In several experiments the high concentrations of calcium and sulfate during the first stages of 20 the intrusion induced gypsum precipitation. The subsequent dissolution of the gypsum raised the concentration of sulfate higher than that in seawater. Saturation indices (SI) for gypsum in the samples collected were calculated with PHREEQC (version 2). Gypsum SI values are in agreement with experimental observations. 25Piper diagrams demonstrate that the experimental variables of transport parameters and cation exchange capacity (CEC) strongly influence the hydrochemistry of seawater intrusion. The experimental data deviate 2 substantially from the theoretical freshwater-seawater mixing line, and the shape of the pathway between the end members depends on the experimental conditions. The experimental data obtained during column experiments and the physical and chemical parameters determined in each experiment can be used in the validation of multicomponent transport models. These 5 hydrogeochemical models may aid in the interpretation of field data.

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A flexible computer code for modelling transport in porous media: impact

Cited by 43 publications

References 9 publications

Modelling the evolution of water quality in abandoned mines of the Lorraine Iron Basin

Modelling the evolution of water quality in abandoned mines of the Lorraine Iron Basin

Quantitative description of multi-component reactive transport in porous media: An empirical approach

Influence of transport parameters and chemical properties of the sediment in experiments to measure reactive transport in seawater intrusion

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