A database of dissolution and precipitation rates for clay-rocks minerals

被引:116
|
作者
Marty, Nicolas C. M. [1 ]
Claret, Francis [1 ]
Lassin, Arnault [1 ]
Tremosa, Joachim [1 ]
Blanc, Philippe [1 ]
Made, Benoit [2 ]
Giffaut, Eric [2 ]
Cochepin, Benoit [2 ]
Tournassat, Christophe [1 ]
机构
[1] Bur Rech Geol & Minieres, F-45060 Orleans 2, France
[2] ANDRA, F-92298 Chatenay Malabry, France
关键词
MULTICOMPONENT REACTIVE TRANSPORT; ATOMIC-FORCE MICROSCOPY; SMECTITE DISSOLUTION; MONTMORILLONITE DISSOLUTION; AQUEOUS-SOLUTIONS; SURFACE-AREA; IN-SITU; SILICATE MINERALS; WEATHERING RATES; KINETICS;
D O I
10.1016/j.apgeochem.2014.10.012
中图分类号
P3 [地球物理学]; P59 [地球化学];
学科分类号
0708 ; 070902 ;
摘要
Many geoscientific fields use reactive transport codes to set up and interpret experiments as well as to understand natural processes. Reactive transport codes are also useful to give insights in the long term evolution of systems such as radioactive waste repositories or CO2 storage sites, for which experiments cannot reach the targeted time scale nor the dimension of those systems. The consideration of kinetic reaction rates is often required to reproduce correctly the geochemical and transport processes of interest. However, kinetic data are scattered in the literature, making data and selection a tedious task. Kinetic parameters on a single system are also highly variable depending on data choice, interpretation and chosen kinetic modelling approaches, thus making inter-comparison of modelling studies difficult. The present work aims at proposing a compilation of kinetic parameters to overcome part of above cited problems. The proposed selection was done (i) to ensure consistency of data selection criteria and data treatment and (ii) to ease the use of common kinetic parameters that are independent of the chosen geochemical modelling code. For those two reasons, the kinetic formalism of the transition state theory (TST) was chosen. The selection of minerals is currently limited to those present in clay rich rocks and cements, reflecting the effort made at predicting the evolution of radioactive waste underground storage systems. Still, the proposed compilation should also be useful for other applications such as CO2 sequestration. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码:108 / 118
页数:11
相关论文
共 50 条