Competitive Association of Antibiotics with a Clay Mineral and Organoclay Derivatives as a Control of Their Lifetimes in the Environment

Tiago De Oliveira, Elodie Fernandez, Laëtitia Fougère, Emilie Destandau, Mohammed Boussafir, Minoru Sohmiya, Yoshiyuki Sugahara, Regis Guegan

Research output: Contribution to journalArticle

Abstract

A Na-smectite clay mineral (Na-Mt) was exchanged with two concentrations of benzyldimethyltetradecyl ammonium chloride cationic surfactant up to one time the cation exchange capacity. Nonionic organoclay was prepared with polyoxyethylene (20) oleyl ether (Brij-O20) nonionic surfactant at one concentration. The resulting organoclays displayed lateral layer organization of the surfactants within their interlayer space.. The adsorption properties of these organoclays and the starting raw clay mineral were evaluated for three extensively used antibiotic pharmaceutical products: the amoxicillin (AMX), the sulfamethoxazole (SMX), and the trimethoprim (TRI), recognized as recalcitrant compounds to conventional water treatments and to display a complex behavior for different pH and temperature experimental conditions. Besides showing short half-life time with possible degradation by UV radiation, these antibiotics associated with mineral phases cause serious environmental issues of which the toxic effect can be exacerbated in the presence of other chemical compounds. From the set of data obtained by complementary techniques: UV and Fourier transform infrared spectroscopy, high-performance liquid chromatography coupled with mass spectrometry, and X-ray diffraction, it appears that the nonionic organoclay shows its versatility for the adsorption of individual molecules as well as a pool of antibiotics. The mixing of the three antibiotics showing different electric charged species (cations, anions, and zwitterions) mimics the natural context drives to a deep modification of the adsorption behavior onto the different materials that can act as possible carrier mineral phases in aquatic environment. These competition effects can be measured through the significant decrease of the KF Freundlich constants for AMX in the presence of other molecules (or electrolytes), whereas TRI and SMX, by their possible association, create a synergistic effect that favors their adsorption on the whole layered materials.

Original languageEnglish
Pages (from-to)15332-15342
Number of pages11
JournalACS Omega
Volume3
Issue number11
DOIs
Publication statusPublished - 2018 Nov 12

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Organoclay
Antibiotics
Clay minerals
Anti-Bacterial Agents
Derivatives
Adsorption
Amoxicillin
Sulfamethoxazole Drug Combination Trimethoprim
Minerals
Cations
Positive ions
Ammonium Chloride
Molecules
Chemical compounds
Poisons
Cationic surfactants
Nonionic surfactants
High performance liquid chromatography
Water treatment
Surface-Active Agents

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

Competitive Association of Antibiotics with a Clay Mineral and Organoclay Derivatives as a Control of Their Lifetimes in the Environment. / De Oliveira, Tiago; Fernandez, Elodie; Fougère, Laëtitia; Destandau, Emilie; Boussafir, Mohammed; Sohmiya, Minoru; Sugahara, Yoshiyuki; Guegan, Regis.

In: ACS Omega, Vol. 3, No. 11, 12.11.2018, p. 15332-15342.

Research output: Contribution to journalArticle

De Oliveira, Tiago ; Fernandez, Elodie ; Fougère, Laëtitia ; Destandau, Emilie ; Boussafir, Mohammed ; Sohmiya, Minoru ; Sugahara, Yoshiyuki ; Guegan, Regis. / Competitive Association of Antibiotics with a Clay Mineral and Organoclay Derivatives as a Control of Their Lifetimes in the Environment. In: ACS Omega. 2018 ; Vol. 3, No. 11. pp. 15332-15342.
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