|
|||||
|
|
Highly Selective Removal of Perfluorinated Contaminants by Adsorption on All-Silica Zeolite Beta |
|
| Authors: | Matthias Van den Bergh Andraž Krajnc Stefan Voorspoels Sergio Rodrigues Tavares Steven Mullens Prof Isabelle Beurroies Prof Guillaume Maurin Gregor Mali Prof Dirk E De Vos |
| Institution: | 1. Centre for Membrane Separations, Adsorption, Catalysis and Spectroscopy for Sustainable Solutions (cMACS), KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium;2. National Institute of Chemistry, Hajdrihova 19, 1001 Ljubljana, Slovenia;3. Flemish Institute for Technological Research, VITO, Boeretang 200, 2400 Mol, Belgium;4. Institut Charles Gerhardt Montpellier, UMR 5253, CNRS, ENSCM, Pl. E. Bataillon, 34095 Montpellier, France;5. MADIREL, Aix Marseille Université, 13013 Marseille, France |
| Abstract: | Perfluorinated alkylated substances (PFASs) are widely used in industrial and commercial applications, leading to a widespread occurrence of these persistent and harmful contaminants in our environment. Removal of these compounds from surface and waste waters is being mandated by European and U.S. governments. Currently, there are no treatment techniques available that lower the concentrations of these compounds for large water bodies in a cost- and energy-efficient way. We hereby propose a hydrophobic, all-silica zeolite Beta material that is a highly selective and high-capacity adsorbent for PFASs, even in the presence of organic competitors. Advanced characterization data demonstrate that the adsorption process is driven by a very negative adsorption enthalpy and favorable steric factors. |
| Keywords: | adsorption computational chemistry NMR spectroscopy perfluorinated compounds zeolites |