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Fate and transport of pharmaceuticals in iron and manganese binary oxide coated sand columns
Umeå universitet, Teknisk-naturvetenskapliga fakulteten, Kemiska institutionen. Université de Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR-UMR 6226, Rennes, France.
Department of Earth Sciences, Utrecht University, Utrecht, Netherlands.
Université de Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR-UMR 6226, Rennes, France.
Umeå universitet, Teknisk-naturvetenskapliga fakulteten, Kemiska institutionen.ORCID-id: 0000-0003-4954-6461
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2023 (Engelska)Ingår i: Environmental Science and Technology, ISSN 0013-936X, E-ISSN 1520-5851, Vol. 57, nr 1, s. 214-221Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Predicting the fate and transport of pharmaceuticals in terrestrial environments requires knowledge of their interactions with complex mineral assemblages. To advance knowledge along this front, we examined the reactivity of pipemidic acid (PIP), a typical quinolone antibiotic, with quartz particles coated with a mixture of manganese oxide (MnO2) and goethite (α-FeOOH) under static and dynamic flow conditions. Batch and dynamic column experiments showed that PIP binding to MnO2 proceeded through a heterogeneous redox reaction, while binding to goethite was not redox-reactive. Mixed columns of aggregated goethite-manganese particles however enhanced redox reactivity because (i) goethite facilitated the transport of dissolved Mn(II) ion and increased the retention of PIP oxidation products, and (ii) MnO2 was protected from passivation. This mobility behavior was predicted using transport models accounting for adsorption and transformation kinetics of PIP on both goethite and MnO2. This work sheds new light on reactivity changes of mixtures of Fe and Mn oxides under flow-through conditions and will have important implications in predicting the fate and transport of redox-active organic compounds as well as development of new geomedia filters for environmental remediation.

Ort, förlag, år, upplaga, sidor
American Chemical Society (ACS), 2023. Vol. 57, nr 1, s. 214-221
Nyckelord [en]
geomedia filter, goethite, manganese oxide, modeling, pharmaceuticals, redox, transport
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Miljövetenskap
Identifikatorer
URN: urn:nbn:se:umu:diva-201758DOI: 10.1021/acs.est.2c05963ISI: 000893137900001PubMedID: 36469013Scopus ID: 2-s2.0-85143487794OAI: oai:DiVA.org:umu-201758DiVA, id: diva2:1721126
Forskningsfinansiär
Vetenskapsrådet, 2020-04853Tillgänglig från: 2022-12-21 Skapad: 2022-12-21 Senast uppdaterad: 2023-07-13Bibliografiskt granskad

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Luo, TaoBoily, Jean-François

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