Use of a clay mineral and its nonionic and cationic organoclay derivatives for the removal of pharmaceuticals from rural wastewater effluents

A Na+ exchanged montmorillonite clay (Na–Mt) and its organoclay derivatives prepared with benzyldimethyltetradecylammonium (BDTA) cationic and polyoxyethylene (20)oleyl-ether (Brij-O20) non-ionic surfactants were used for first time at our knowledge as adsorbents the removal diverse pharmaceuticals...

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Veröffentlicht in:Chemosphere Jg. 259; S. 127480
Hauptverfasser: De Oliveira, Tiago, Boussafir, Mohammed, Fougère, Laëtitia, Destandau, Emilie, Sugahara, Yoshiyuki, Guégan, Régis
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Elsevier Ltd 01.11.2020
Elsevier BV
Elsevier
Schlagworte:
[CHIM.MATE] Chemical Sciences/Material chemistry
[CHIM.OTHE] Chemical Sciences/Other
[SDE.IE] Environmental Sciences/Environmental Engineering
adsorbents
Adsorption
Bentonite
Cations
Chemical Sciences
Clay
drugs
effluents
Emerging pollutants
environment
Environmental Engineering
Environmental Sciences
forces
France
Hydrophobic and Hydrophilic Interactions
hydrophobicity
knowledge
Material chemistry
montmorillonite
nonionic surfactants
Organoclay
Other
Pharmaceutical Preparations
Pharmaceuticals
polyethylene glycol
remediation
Rural water treatment
sampling
Surface-Active Agents
van der Waals forces
Waste Disposal, Fluid
Wastewater
Water
Water Pollutants, Chemical
France
Rural water treatment
Adsorption
Emerging pollutants
Organoclay
Pharmaceuticals
organoclay
adsorption
emerging pollutants
pharmaceuticals
ISSN:0045-6535, 1879-1298, 1879-1298
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Zusammenfassung:A Na+ exchanged montmorillonite clay (Na–Mt) and its organoclay derivatives prepared with benzyldimethyltetradecylammonium (BDTA) cationic and polyoxyethylene (20)oleyl-ether (Brij-O20) non-ionic surfactants were used for first time at our knowledge as adsorbents the removal diverse pharmaceuticals (PPs) from samples collected in a rural wastewater facility (town of Josnes in France). The selected facility showed a poor efficiency for the elimination of PPs that were permanently release to the environment. Although involving different interactional mechanisms, the whole adsorbents Na–Mt, nonionic Brij-Mt and cationic BDTA-Mt organoclays, could remove the entire PPs of various chemical nature in a low concentration regime (ng L−1), where electrostatic interactions mainly controlled the adsorption. Thus, the organic PPs cations were preferentially adsorbed onto Na–Mt and Brij0.4-Mt (with its dual hydrophilic-hydrophobic nature) while anionic PPs showed a bold affinity to BDTA-Mt. The hydrophobic environment generated by the intercalation of surfactants within the interlayer space of organoclays conferred a versatility for the adsorption of numerous PPs through weak molecular forces (Van der Waals and/or pi-pi interactions). The study confirmed the proper efficiency of the studied layered materials including organoclays and emphasized about their promising interests in water remediation strategy. •Significant occurrence of pharmaceuticals (PPs) in a rural wastewater treatment facility.•Use of clay and organoclay as adsorbents for PPs showing different organic moieties.•Removal of PPs from a wastewater solution appears efficient at low concentration.•Electrostatic interaction seems to be the main driving force for PPs adsorption.
Bibliographie:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0045-6535
1879-1298
1879-1298
DOI:10.1016/j.chemosphere.2020.127480