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Geochemistry of Capillary Hydrogeochemical Systems in Arid Environments

机译:干旱环境中毛细管水文地球化学系统的地球化学

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In arid environments, porous media are unsaturated with water which is submitted to capillary constraints. The present chapter focuses on the geo-chemical impacts of such physical constraints and how theoretical analysis can help interpreting field or laboratory observations. The basic principles of capillary geochemistry suggest that the fate of contaminants, either organic or inorganic, can be significantly impacted in terms of reactive mass transfer in addition to flow and transport processes. All these mechanisms are closely interconnected, what makes the description of the behavior of such systems very complicated. An important work still has to be done in order to achieve such a goal: a number of mechanisms are not taken into account in the current state of development of the capillary geochemistry, namely mechanisms that occur in the thinnest confining geometries, like disjoining pressures, surface forces, etc.
机译:在干旱的环境中,多孔介质会因水而变得不饱和,这会受到毛细管的约束。本章重点介绍这种物理约束条件对地球化学的影响,以及理论分析如何帮助解释现场或实验室观察结果。毛细管地球化学的基本原理表明,除了流动和传输过程之外,有机或无机污染物的结局也会在反应性传质方面受到重大影响。所有这些机制都是紧密相连的,这使得对此类系统的行为的描述非常复杂。为了实现这一目标,仍然需要做重要的工作:在毛细管地球化学的当前发展状态下,并未考虑多种机制,即在最薄的约束几何体中发生的机制,例如分离压力,表面力等

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    Institut des Sciences de la Terre d'Orleans, UMR 7327 Universite d'Orleans - CNRS - BRGM,BRGM, 3 avenue Claude Guillemin, 45060 Orleans, Cedex 2, France;

    Institute of Earth Sciences, University of Orleans, Orleans, France;

    Institut des Sciences de la Terre d'Orleans, UMR 7327 Universite d'Orleans - CNRS - BRGM,BRGM, 3 avenue Claude Guillemin, 45060 Orleans, Cedex 2, France;

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