%0 Journal Article %T Performance evaluation of organoclays for the amoxicillin retention in a dynamic context %+ Waseda University [Tokyo, Japan] %+ Institut des Sciences de la Terre d'Orléans - UMR7327 (ISTO) %+ Biogéosystèmes Continentaux - UMR7327 %A Guégan, Régis %A Le Forestier, Lydie %< avec comité de lecture %@ 1385-8947 %J Chemical Engineering Journal %I Elsevier %V 406 %P 126859 %8 2021 %D 2021 %R 10.1016/j.cej.2020.126859 %K amoxicillin %K organoclays %K percolation experiments %K adsorption %K hydraulic conductivity %Z Chemical Sciences/Chemical engineering %Z Chemical Sciences/Material chemistryJournal articles %X The hydraulic conductivity of diverse organoclays was determined through percolation experiments and compared to a raw Na-montmorillonite (Na-Mt). The incorporation of surfactants even at low content drastically changes the hydraulic conductivity with a large increase of about two order of magnitude in contrast to that of Na-Mt (10-12 m s-1). Batch kinetics and equilibrium adsorption experiments confirmed the proper affinity of organoclays to a zwitterion antibiotic: the amoxicillin (AMX) which was quickly adsorbed (at a time below 30 min) at large amounts (up to 1.4 × 10-3 mol g-1). However, in percolation conditions, the significant increase of the permeability led to a short interaction time between the organoclays and the pharmaceutical. In contrast to Na-Mt for which it took age to get only one drop of AMX, leachates, resulting of a percolation through organoclays, were collected for a time below 10 min, not enough sufficient to ensure a proper removal of an antibiotic with concentration reduced by 5-80% of the initial solution. %G English %2 https://insu.hal.science/insu-02931496/document %2 https://insu.hal.science/insu-02931496/file/1-s2.0-S1385894720329879-main.pdf %L insu-02931496 %U https://insu.hal.science/insu-02931496 %~ OBSPM %~ INSU %~ BRGM %~ CNRS %~ UNIV-ORLEANS %~ ISTO %~ OSUC %~ PSL %~ TEST-HALCNRS %~ OBSPM-PSL