Service interruption on Monday 11 July from 12:30 to 13:00: all the sites of the CCSD (HAL, EpiSciences, SciencesConf, AureHAL) will be inaccessible (network hardware connection).
Skip to Main content Skip to Navigation
Journal articles

Adsorption of Diclofenac Pharmaceutical onto a Cationic Organoclay and an Untreated Montmorillonite

Abstract : Among pharmaceutical products (PPs) recalcitrant to water treatments, diclofenac shows a high toxicity and remains at high concentration in natural aquatic environments. The aim of this study concerns the understanding of the adsorption mechanism of this anionic PP onto an organoclay prepared with a long-alkyl chains cationic surfactant for various experimental pH and temperature conditions. The experimental data obtained by a set of complementary techniques (X-ray diffraction, elemental analyses, gas chromatography coupled with mass spectrometry, and Fourier transform infrared spectroscopy) and the use of Langmuir, Freundlich and Dubinin-Radushkevish equation models, reveal that organoclays show a good affinity to diclofenac while the chemical nature of surfactant appears to play a minor role. This study stresses out the application of organoclays for the adsorption of a recalcitrant PP in numerous aquatic compartments that can be used as a complement with activated carbon for waste water treatment for instance.
Complete list of metadata

Cited literature [14 references]  Display  Hide  Download
Contributor : Nathalie POTHIER Connect in order to contact the contributor
Submitted on : Monday, February 17, 2020 - 10:55:16 AM
Last modification on : Wednesday, May 11, 2022 - 4:39:10 AM
Long-term archiving on: : Monday, May 18, 2020 - 2:14:17 PM


Publisher files allowed on an open archive


Distributed under a Creative Commons Attribution - ShareAlike 4.0 International License




Tiago de Oliveira, Régis Guégan. Adsorption of Diclofenac Pharmaceutical onto a Cationic Organoclay and an Untreated Montmorillonite. IOP Conference Series: Materials Science and Engineering, IOP Publishing, 2020, 739, pp.012024. ⟨10.1088/1757-899X/739/1/012024⟩. ⟨insu-02481019⟩



Record views


Files downloads