Silica-clay nanocomposites for the removal of antibiotics in the water usage cycle
2021
Levard, Clément | Hamdi-Alaoui, Karima | Baudin, Isabelle | Guillon, Amélie | Borschneck, Daniel | Campos, Andrea | Bizi, Mohamed | Benoit, Florence | Chanéac, Corinne | Labille, Jérôme | Centre Européen de Recherche et d'Enseignement des Géosciences de l'Environnement (CEREGE) ; Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Collège de France (CdF (institution))-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) | Centre International de Recherche Sur l'Eau et l'Environnement [Suez] (CIRSEE) ; SUEZ ENVIRONNEMENT (FRANCE) | Centre Pluridisciplinaire de Microscopie Electronique et de Microanalyse (AMU CP2M) ; Aix Marseille Université (AMU) | Bureau de Recherches Géologiques et Minières (BRGM) | Laboratoire de Chimie de la Matière Condensée de Paris (LCMCP) ; Institut de Chimie - CNRS Chimie (INC-CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) | ANR-15-CE04-0007,POLPHARMA,Procédé innovant mettant en œuvre des nanostructures pour l'élimination des micropolluants émergeants des effluents aqueux.(2015)
International audience
Show more [+] Less [-]English. The increasingly frequent detection of resistant organic micropollutants in waters calls for better treatment of these molecules that are recognized to be dangerous for human health and the environment. As an alternative to conventional adsorbent material such as activated carbon, silica-clay nanocomposites were synthesized for the removal of pharmaceuticals in contaminated water. Their efficiency with respect to carbamazepine, ciprofloxacin, danofloxacin, doxycycline, and sulfamethoxazole was assessed in model water and real groundwater spiked with the five contaminants. Results showed that the efficacy of contaminant removal depends on the chemical properties of the micropollutants. Among the adsorbents tested, the nanocomposite made of 95% clay and 5% SiO2 NPs was the most efficient and was easily recovered from solution after treatment compared with pure clay, for example. The composite is thus a good candidate in terms of operating costs and environmental sustainability for the removal of organic contaminants
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