Simulation of the effect of time-variable water flow on the speciation and mobility of reactive elements in the soil

Diederik Jacques; Dirk Mallants; Jirka Simunek; M. Th. van Genuchten

Simulation of the effect of time-variable water flow on the speciation and mobility of reactive elements in the soil

Diederik Jacques, Dirk Mallants, Jirka Simunek, M. Th. van Genuchten

Research output › peer-review

Abstract

The speciation and mobility of elements in the soil are the result of an interplay between physical, chemical and biological processes in the soil. Transient flow conditions influence the geochemical conditions due to changing water and solute fluxes and water contents. A reactive coupled simulator is needed to explore coupled effects. HP1 is a generic coupled code based on HYDRUS-1D and PHREEQC-2. The code is used to illustrate the effect of transient flow conditions on speciation and mobility of elements in the soil at a seasonal and long-term time scale. Two examples ((1) Heavy metal migration in a podzol soil and (2) P and U migration in a soil profile from inorganic P-fertilizers) illustrated the effects of water flow processes on speciation and mobility. Transient flow conditions (fluxes and water content) influence geochemical conditions (pH) and speciation by concentration changes resulting in changes in adsorption potential and aqueous complexation.

Original language	English
Title of host publication	The Second HYDRUS Workshop
Place of Publication	Prague, Czech Republic
Pages	85-92
State	Published - 28 Mar 2008
Event	HYDRUS workshop - Prague Duration: 28 Mar 2008 → 28 Mar 2008

Conference

Conference	HYDRUS workshop
Country/Territory	Czech Republic
City	Prague
Period	2008-03-28 → 2008-03-28

Cite this

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title = "Simulation of the effect of time-variable water flow on the speciation and mobility of reactive elements in the soil",

abstract = "The speciation and mobility of elements in the soil are the result of an interplay between physical, chemical and biological processes in the soil. Transient flow conditions influence the geochemical conditions due to changing water and solute fluxes and water contents. A reactive coupled simulator is needed to explore coupled effects. HP1 is a generic coupled code based on HYDRUS-1D and PHREEQC-2. The code is used to illustrate the effect of transient flow conditions on speciation and mobility of elements in the soil at a seasonal and long-term time scale. Two examples ((1) Heavy metal migration in a podzol soil and (2) P and U migration in a soil profile from inorganic P-fertilizers) illustrated the effects of water flow processes on speciation and mobility. Transient flow conditions (fluxes and water content) influence geochemical conditions (pH) and speciation by concentration changes resulting in changes in adsorption potential and aqueous complexation.",

keywords = "reactive transport modelling, vadose zone, HP1",

author = "Diederik Jacques and Dirk Mallants and Jirka Simunek and {van Genuchten}, {M. Th.}",

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T1 - Simulation of the effect of time-variable water flow on the speciation and mobility of reactive elements in the soil

AU - Jacques, Diederik

AU - Mallants, Dirk

AU - Simunek, Jirka

AU - van Genuchten, M. Th.

N1 - Score = 1

PY - 2008/3/28

Y1 - 2008/3/28

N2 - The speciation and mobility of elements in the soil are the result of an interplay between physical, chemical and biological processes in the soil. Transient flow conditions influence the geochemical conditions due to changing water and solute fluxes and water contents. A reactive coupled simulator is needed to explore coupled effects. HP1 is a generic coupled code based on HYDRUS-1D and PHREEQC-2. The code is used to illustrate the effect of transient flow conditions on speciation and mobility of elements in the soil at a seasonal and long-term time scale. Two examples ((1) Heavy metal migration in a podzol soil and (2) P and U migration in a soil profile from inorganic P-fertilizers) illustrated the effects of water flow processes on speciation and mobility. Transient flow conditions (fluxes and water content) influence geochemical conditions (pH) and speciation by concentration changes resulting in changes in adsorption potential and aqueous complexation.

AB - The speciation and mobility of elements in the soil are the result of an interplay between physical, chemical and biological processes in the soil. Transient flow conditions influence the geochemical conditions due to changing water and solute fluxes and water contents. A reactive coupled simulator is needed to explore coupled effects. HP1 is a generic coupled code based on HYDRUS-1D and PHREEQC-2. The code is used to illustrate the effect of transient flow conditions on speciation and mobility of elements in the soil at a seasonal and long-term time scale. Two examples ((1) Heavy metal migration in a podzol soil and (2) P and U migration in a soil profile from inorganic P-fertilizers) illustrated the effects of water flow processes on speciation and mobility. Transient flow conditions (fluxes and water content) influence geochemical conditions (pH) and speciation by concentration changes resulting in changes in adsorption potential and aqueous complexation.

KW - reactive transport modelling

KW - vadose zone

KW - HP1

UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/ezp_91342

UR - http://knowledgecentre.sckcen.be/so2/bibref/5136

M3 - In-proceedings paper

SN - 978-80-213-1783-3

SP - 85

EP - 92

BT - The Second HYDRUS Workshop

CY - Prague, Czech Republic

T2 - HYDRUS workshop

Y2 - 28 March 2008 through 28 March 2008

ER -