Work

Mass transfer modelling in clay-based material: Estimation of apparent diffusivity of a molecule of interest

Year: 2018

Type: article

Abstract: This work is devoted to study the controlled release of a molecule of interest in an external medium. The molecule is previously adsorbed in an organic porous material, encapsulated in a thin clay layer. The experimental release kinetics is investigated for the organic material and the clay-based material in two external media: pure water and saline solution. A numerical modelling was developed to understand the different phenomena that act on the molecule transfer. The results show that the hydration of the clay-based material reduces the release kinetics. Moreover, it was observed that the molecules are released faster in pure water than in the saline solution. This phenomenon is explained by the osmotic pressure difference on both sides of the clay layer.

Source: Comptes Rendus Chimie

DOI: 10.1016/j.crci.2018.10.008

Authors: Patrick Dutournié, Marion Bruneau, Jocelyne Brendlé, Lionel Limousy, Sylvain Pluchon

Institutions: Centre National de la Recherche Scientifique, Université de Haute-Alsace, Institut de Sciences des Matériaux de Mulhouse, Université de Strasbourg, Centre Mondial de l'Innovation Roullier

Language: English

Topic: Clay minerals and soil interactions

Subfield: Geochemistry and Petrology

Field: Earth and Planetary Sciences

Domain: Physical Sciences

Open Access status: hybrid

OpenAlex ID: W2902536631

FWCI: 0.468

Cites: 29

Cited by: 15

Related to: 10