Skip to Main content Skip to Navigation
Journal articles

Adsorption of pharmaceuticals onto activated carbon fiber cloths - Modeling and extrapolation of adsorption isotherms at very low concentrations

Abstract : Activated carbon fiber cloths (ACFC) have shown promising results when applied to water treatment, especially for removing organic micropollutants such as pharmaceutical compounds. Nevertheless, further investigations are required, especially considering trace concentrations, which are found in current water treatment. Until now, most studies have been carried out at relatively high concentrations (mg L(-1)), since the experimental and analytical methodologies are more difficult and more expensive when dealing with lower concentrations (ng L(-1)). Therefore, the objective of this study was to validate an extrapolation procedure from high to low concentrations, for four compounds (Carbamazepine, Diclofenac, Caffeine and Acetaminophen). For this purpose, the reliability of the usual adsorption isotherm models, when extrapolated from high (mg L(-1)) to low concentrations (ng L(-1)), was assessed as well as the influence of numerous error functions. Some isotherm models (Freundlich, Toth) and error functions (RSS, ARE) show weaknesses to be used as an adsorption isotherms at low concentrations. However, from these results, the pairing of the Langmuir-Freundlich isotherm model with Marquardt's percent standard of deviation was evidenced as the best combination model, enabling the extrapolation of adsorption capacities by orders of magnitude.
Document type :
Journal articles
Complete list of metadatas

Cited literature [56 references]  Display  Hide  Download

https://hal-univ-rennes1.archives-ouvertes.fr/hal-01236454
Contributor : Laurent Jonchère <>
Submitted on : Monday, May 23, 2016 - 1:34:18 PM
Last modification on : Thursday, March 5, 2020 - 2:04:30 PM

File

Adsorption of pharmaceuticals ...
Files produced by the author(s)

Identifiers

Citation

Hélène Fallou, Nicolas Cimetiere, Sylvain Giraudet, Dominique Wolbert, Pierre Le Cloirec. Adsorption of pharmaceuticals onto activated carbon fiber cloths - Modeling and extrapolation of adsorption isotherms at very low concentrations. Journal of Environmental Management, Elsevier, 2016, 166, pp.544--555. ⟨10.1016/j.jenvman.2015.10.056⟩. ⟨hal-01236454⟩

Share

Metrics

Record views

307

Files downloads

487