A reactive transport model for mercury fate in contaminated soil—sensitivity analysis

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A reactive transport model for mercury fate in contaminated soil—sensitivity analysis. / Leterme, Bertrand; Jacques, Diederik.

In: Environmental Science and Pollution Research, Vol. 22, No. 21, 11.2015, p. 16830-16842.

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Leterme, Bertrand ; Jacques, Diederik. / A reactive transport model for mercury fate in contaminated soil—sensitivity analysis. In: Environmental Science and Pollution Research. 2015 ; Vol. 22, No. 21. pp. 16830-16842.

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@article{a45e0cf4bcec40048447993f3da1dd8c,
title = "A reactive transport model for mercury fate in contaminated soil—sensitivity analysis",
abstract = "We present a sensitivity analysis of a reactive transport model of mercury (Hg) fate in contaminated soil systems. The one-dimensional model, presented in Leterme et al. (2014), couples water flow in variably saturated conditions with Hg physico-chemical reactions. The sensitivity of Hg leaching and volatilisation to parameter uncertainty is examined using the elementary effect method. A test case is built using a hypothetical 1-m depth sandy soil and a 50-year time series of daily precipitation and evapotranspiration. Hg anthropogenic contamination is simulated in the topsoil by separately considering three different sources: cinnabar, non-aqueous phase liquid and aqueous mercuric chloride. The model sensitivity to a set of 13 input parameters is assessed, using three different model outputs (volatilized Hg, leached Hg, Hg still present in the contaminated soil horizon). Results show that dissolved organic matter (DOM) concentration in soil solution and the binding constant to DOM thiol groups are critical parameters, as well as parameters related to Hg sorption to humic and fulvic acids in solid organic matter. Initial Hg concentration is also identified as a sensitive parameter. The sensitivity analysis also brings out non-monotonic model behaviour for certain parameters.",
keywords = "Mercury, HP1, Reactive transport modelling , Vadose zone, Morris , Sensitivity analysis, Hg",
author = "Bertrand Leterme and Diederik Jacques",
note = "SCORE = 10",
year = "2015",
month = "11",
doi = "10.1007/s11356-015-4876-x",
language = "English",
volume = "22",
pages = "16830--16842",
journal = "Environmental Science and Pollution Research",
issn = "0944-1344",
publisher = "Springer",
number = "21",

}

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TY - JOUR

T1 - A reactive transport model for mercury fate in contaminated soil—sensitivity analysis

AU - Leterme, Bertrand

AU - Jacques, Diederik

N1 - SCORE = 10

PY - 2015/11

Y1 - 2015/11

N2 - We present a sensitivity analysis of a reactive transport model of mercury (Hg) fate in contaminated soil systems. The one-dimensional model, presented in Leterme et al. (2014), couples water flow in variably saturated conditions with Hg physico-chemical reactions. The sensitivity of Hg leaching and volatilisation to parameter uncertainty is examined using the elementary effect method. A test case is built using a hypothetical 1-m depth sandy soil and a 50-year time series of daily precipitation and evapotranspiration. Hg anthropogenic contamination is simulated in the topsoil by separately considering three different sources: cinnabar, non-aqueous phase liquid and aqueous mercuric chloride. The model sensitivity to a set of 13 input parameters is assessed, using three different model outputs (volatilized Hg, leached Hg, Hg still present in the contaminated soil horizon). Results show that dissolved organic matter (DOM) concentration in soil solution and the binding constant to DOM thiol groups are critical parameters, as well as parameters related to Hg sorption to humic and fulvic acids in solid organic matter. Initial Hg concentration is also identified as a sensitive parameter. The sensitivity analysis also brings out non-monotonic model behaviour for certain parameters.

AB - We present a sensitivity analysis of a reactive transport model of mercury (Hg) fate in contaminated soil systems. The one-dimensional model, presented in Leterme et al. (2014), couples water flow in variably saturated conditions with Hg physico-chemical reactions. The sensitivity of Hg leaching and volatilisation to parameter uncertainty is examined using the elementary effect method. A test case is built using a hypothetical 1-m depth sandy soil and a 50-year time series of daily precipitation and evapotranspiration. Hg anthropogenic contamination is simulated in the topsoil by separately considering three different sources: cinnabar, non-aqueous phase liquid and aqueous mercuric chloride. The model sensitivity to a set of 13 input parameters is assessed, using three different model outputs (volatilized Hg, leached Hg, Hg still present in the contaminated soil horizon). Results show that dissolved organic matter (DOM) concentration in soil solution and the binding constant to DOM thiol groups are critical parameters, as well as parameters related to Hg sorption to humic and fulvic acids in solid organic matter. Initial Hg concentration is also identified as a sensitive parameter. The sensitivity analysis also brings out non-monotonic model behaviour for certain parameters.

KW - Mercury

KW - HP1

KW - Reactive transport modelling

KW - Vadose zone

KW - Morris

KW - Sensitivity analysis

KW - Hg

UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/ezp_141261

UR - http://knowledgecentre.sckcen.be/so2/bibref/13163

U2 - 10.1007/s11356-015-4876-x

DO - 10.1007/s11356-015-4876-x

M3 - Article

VL - 22

SP - 16830

EP - 16842

JO - Environmental Science and Pollution Research

JF - Environmental Science and Pollution Research

SN - 0944-1344

IS - 21

ER -

ID: 362544