Coupled hydrogeological and reactive transport modelling of the Simpevarp area (Sweden)

Molinero, Jorge; Raposo, J. R.; Galíndez, Juan Manuel; Arcos, David; Guimerà, Jordi

doi:10.1016/j.apgeochem.2008.02.020

Cited by 11 publications

(3 citation statements)

References 44 publications

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“…Although several numerical models, including Hydrus (Hanson, Šimůnek & Hopmans, 2006), have looked at reactive solute transport (Molinero et al, 2008; Kuntz & Grathwohl, 2009; Nakagawa et al, 2010), validation of the models has been limited. Phillips (2006) used Hydrus and some unpublished data to predict the transport of K + in unsaturated repacked horizontal columns of reactive soil similar to the one used in this study.…”

Section: Introductionmentioning

confidence: 99%

Inverse modelling for predicting both water and nitrate movement in a structured-clay soil (Red Ferrosol)

Kirkham

Doyle

Brown

2019

PeerJ

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Soil physical parameter calculation by inverse modelling provides an indirect way of estimating the unsaturated hydraulic properties of soils. However many measurements are needed to provide sufficient data to determine unknown parameters. The objective of this research was to assess the use of unsaturated water flow and solute transport experiments, in horizontal packed soil columns, to estimate the parameters that govern water flow and solute transport. The derived parameters are then used to predict water infiltration and solute migration in a repacked soil wedge. Horizontal columns packed with Red Ferrosol were used in a nitrate diffusion experiment to estimate either three or six parameters of the van Genuchten–Mualem equation while keeping residual and saturated water content, and saturated hydraulic conductivity fixed to independently measured values. These parameters were calculated using the inverse optimisation routines in Hydrus 1D. Nitrate concentrations measured along the horizontal soil columns were used to independently determine the Langmuir adsorption isotherm. The soil hydraulic properties described by the van Genuchten–Mualem equation, and the NO3– adsorption isotherm, were then used to predict water and NO3– distributions from a point-source in two 3D flow scenarios. The use of horizontal columns of repacked soil and inverse modelling to quantify the soil water retention curve was found to be a simple and effective method for determining soil hydraulic properties of Red Ferrosols. These generated parameters supported subsequent testing of interactive flow and reactive transport processes under dynamic flow conditions.

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Section: Introductionmentioning

confidence: 99%

Inverse modelling for predicting both water and nitrate movement in a structured-clay soil (Red Ferrosol)

Kirkham

Doyle

Brown

2019

PeerJ

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“…They found that the importance of the chemical reactions on the flow decrease by increasing density contrast. Molinero et al (2008) simulated a coupled regional groundwater flow and reactive transport in a coastal area (Simpevarp in Sweden) and demonstrate that the reactive transport models are powerful tools in the interpretation of hydrogeological and hydrogeochemical data.…”

Section: Introductionmentioning

confidence: 99%

Numerical modeling of coastal aquifer karst processes by means of coupled simulations of density-driven flow and reactive solute transport phenomena

Garcia

Huguet

Saaltink

2011

Carbonates Evaporites

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“…On the other hand, in recent years, a new approach was developed: transport modelling implemented in coupled numerical codes (Steefel et al, 2005;Jacques and Šimůnek, 2005;Molinero et al, 2008). The coupled numerical codes integrate two main modules: a mathematical apparatus for the governing equations of the water flow part, including variably saturated medium (usually modified) and a mathematical apparatus for describing the chemical and geochemical reactions.…”

Section: Introductionmentioning

confidence: 99%

Assessment of strontium transport in clay medium by using a reactive transport modelling approach – an HP1 case study model

Antonov

2017

Geologica Balcanica

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Modelling of radionuclide transport in the geosphere is a key issue of the evaluation of safety of low- and intermediate-level radioactive waste (LILW) repositories. In Bulgaria, due to the operation of Kozloduy Nuclear Power Plant (NPP), a building of such facility is ongoing. The migration of 90Sr was evaluated by simulation of flow and chemical modelling, performed with coupled numerical code HP1. The adsorption properties of the clays were implemented in the code by surface complexation reactions between strontium and iron oxides. The results were compared with another model performed with computer code HYDRUS 1-D, in which the adsorption properties of the medium were evaluated with the relevant for strontium distribution coefficient, Kd.

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Coupled hydrogeological and reactive transport modelling of the Simpevarp area (Sweden)

Cited by 11 publications

References 44 publications

Inverse modelling for predicting both water and nitrate movement in a structured-clay soil (Red Ferrosol)

Inverse modelling for predicting both water and nitrate movement in a structured-clay soil (Red Ferrosol)

Numerical modeling of coastal aquifer karst processes by means of coupled simulations of density-driven flow and reactive solute transport phenomena

Assessment of strontium transport in clay medium by using a reactive transport modelling approach – an HP1 case study model

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