Adsorption onto ACFC of mixture of pharmaceutical residues in water - experimental studies and modelling

Hélène Fallou (1) , Sylvain Giraudet (1) , Nicolas Cimetiere (1) , Dominique Wolbert (1) , Pierre Le Cloirec (1)

1 ISCR - Institut des Sciences Chimiques de Rennes

The presence of pharmaceutical residues in water resources is a critical issue for the production of drinking water, even though trace concentrations are mostly encountered. The adsorption of eight micropollutants, in mixture, onto a microporous activated carbon fibre cloth was investigated. For each compound, the kinetics and isotherms of adsorption were studied in batch reactors with ultrapure water, groundwater and half-diluted groundwater. Experimental data were generated and compared to values calculated by the association of Ideal Adsorbed Solution Theory (IAST) model and the Homogeneous Surface Diffusion Model (HSDM). The impact of the nature and the content of Natural Organic Matter (NOM) was modelled considering an Equivalent Background Compound (EBC). The presence of NOM in the groundwater is largely detrimental for the adsorption of trace micropollutants.

Keywords: Adsorption; activated carbon fibre cloth; natural organic matter; pharmaceutical residues; modelling

Domains: Chemical Sciences; Other; Environmental Sciences; Environmental Engineering

Hélène Fallou, Sylvain Giraudet, Nicolas Cimetiere, Dominique Wolbert, Pierre Le Cloirec. Adsorption onto ACFC of mixture of pharmaceutical residues in water - experimental studies and modelling. Environmental Technology, 2021, pp.1-11. ⟨10.1080/09593330.2020.1716393⟩. ⟨hal-02498323⟩