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Kiecak, A. ; Sassine, L.* ; Boy-Roura, M.* ; Elsner, M. ; Mas-Pla, J.* ; Le Gal La Salle, C.* ; Stumpp, C.

Sorption properties and behaviour at laboratory scale of selected pharmaceuticals using batch experiments.

J. Contam. Hydrol. 225:103500 (2019)

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Despite the increasing public concern about the frequent occurrence of pharmaceuticals in the water bodies, their transport and fate are not yet well known; in particular in groundwater. In this laboratory study, batch experiments were conducted to investigate the sorption behaviour of selected pharmaceuticals. The choice of compounds was motivated by their chemical properties as well as by their occurrence at the relevant field sites. It included: antipyrine, atenolol, caffeine, carbamazepine, ciprofloxacin, diclofenac, ketoprofen, ofloxacin, and sulfamethoxazole. Sorption behaviour has already been investigated for some of these compounds (e.g. carbamazepine), but for the others (e.g. antipyrine, ketoprofen), extensive studies are missing so far. For the experiments, artificial and actual aquifer materials from complementary field sites were selected: technical coarse quartz sand and sediments from alluvial Vistrenque Aquifer, France (sandy loam), and fluvio-deltaic Baix Fluvia Aquifer, Spain (sandy clay loam, clay, and medium sand). In these field sites occurrence of pharmaceuticals in groundwater was previously stated, and the presented laboratory experiments were complementary to the field investigations. Five concentration steps for determining the sorption isotherms were investigated. Correlation analysis showed dependencies of K-coefficients of individual compounds and sediment properties; however, no clear, universal patterns for all compounds were found. Batch experiments suggest that sorption behaviour was governed by compound-specific properties rather than by sediment properties. These results contribute to the understanding sorption behaviour of pharmaceuticals in heterogeneous sediments, although some inconsistencies were revealed between laboratory scale results and field scale observations.

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Publication type Article: Journal article

Document type Scientific Article

Corresponding Author

Keywords Batch Experiment ; Sorption Isotherm ; Emerging Organic Contaminants ; Pharmaceuticals; Organic Micropollutants; Carbamazepine; Groundwater; Mobility; Fate; Coefficients; Soil; Contaminants; Diclofenac; Adsorption

ISSN (print) / ISBN 0169-7722

e-ISSN 1873-6009

Journal Journal of Contaminant Hydrology

Quellenangaben Volume: 225, Article Number: 103500

Publisher Elsevier

Publishing Place Radarweg 29, 1043 Nx Amsterdam, Netherlands

Non-patent literature Publications

Reviewing status Peer reviewed

Institute(s) Institute of Groundwater Ecology (IGOE)