Computational Screening of Hydrophobic Zeolites for the Removal of Emerging Organic Contaminants from Water

Author:

Brauer Jakob12ORCID,Fischer Michael12ORCID

Affiliation:

1. Crystallography and Geomaterials Research Faculty of Geosciences University of Bremen Klagenfurter Straße 2–4 28359 Bremen Germany

2. Bremen Center for Computational Materials Science and MAPEX Center for Materials and Processes University of Bremen 28359 Bremen Germany

Abstract

AbstractThe pollution of water resources by pharmaceuticals and agents of personal care products (PPCPs) poses an increasingly pressing issue that has received considerable attention from scientists and government agencies alike. Hydrophobic zeolites can serve as selective adsorbents to remove these contaminants from aqueous solution. So far, the adsorption of PPCPs in zeolites has often been investigated in case studies focusing on a small number of contaminants and one or a few zeolites. We present a computational screening approach to investigate the interaction of 53 PPCPs with 14 all‐silica zeolites, aiming at a more comprehensive understanding of factors that are beneficial for a strong host‐guest interaction and thus an efficient adsorption. The systems are modelled on the classical force field level of theory, allowing for the efficient computational treatment of a large number of PPCP‐zeolite combinations and evaluated in terms of the interaction energy between PPCP and zeolite framework. For selected PPCP‐zeolite combinations additional Free Energy Perturbation simulations are employed to compute Free Energies of Transfer between the aqueous phase and the adsorbed state. These results can serve as a starting point for experimental studies of relevant PPCP‐zeolite combination or more in‐depth theoretical investigations.

Publisher

Wiley

Reference87 articles.

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3. Directorate-General for Environment “Proposal for a Directive amending the Water Framework Directive the Groundwater Directive and the Environmental Quality Standards Directive ” can be found underhttps://environment.ec.europa.eu/publications/proposal-amending-water-directives en 2022.

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