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Elimination of Perfluorinated Surfactants – Adsorbent Evaluation Applying Surface Tension Measurements
Author(s) -
Schuricht Falk,
Reschetilowski Wladimir,
Reich Andy,
Giebler Eckart
Publication year - 2014
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201400025
Subject(s) - adsorption , surface tension , chemistry , sulfonate , ionic strength , effluent , chemical engineering , ion exchange , surface modification , perfluorooctane , kinetics , tensiometer (surface tension) , chromatography , ionic bonding , ion , organic chemistry , aqueous solution , environmental engineering , thermodynamics , physics , quantum mechanics , engineering , sodium
Abstract The adsorption of perfluorooctane sulfonate (PFOS) onto activated carbons, nonfunctionalized polymeric adsorbents, and anion exchange resins was evaluated in batch as well as column experiments. It was found that the total PFOS capacity, adsorption kinetics, breakthrough times, and minimum effluent concentrations were highly dependent on the material properties, such as the inner surface area, pore size, functionalization, and hydrophobic character of the material, and on process parameters like temperature and ionic strength of the solution. The experiments furthermore revealed that surface tension measurements are a suitable method for online determination of PFOS concentrations above a defined value.