Modelling of adsorption isotherms and kinetics of endocrine disrupting compounds onto powdered activated carbon in natural waters

摘要

The adsorption of two representative endocrine disrupting compounds (EDCs) has been investigated at ug.L~(-1) and ng.L~(-1) level in ultra pure and natural waters. The aim of the study was to assess the ability of single solute (Freundlich, Langmuir and Langmuir-Freundlich) and competition adsorption models (IAST-EBC), fitted solely to high concentration experimental data, to predict the adsorbabilities of the target compounds at low concentration level. Results have shown that the IAST combined with Langmuir-Freundlich model for the EDC and Langmuir model for the EBC allows the extrapolation of the adsorption phenomenon of the EDC with acceptable error.