Description du projet
Une nouvelle méthode de purification de l’eau
Nos eaux de surface et nos eaux potables sont de plus en plus menacées par les micropolluants organiques (MPO) issus de résidus industriels, agricoles et pharmaceutiques. Les technologies membranaires actuelles, telles que l’osmose inverse, sont difficiles à déployer en raison de leur intensité énergétique et de problématiques flux de déchets de saumure. Dans ce contexte, le projet MOSAIC, financé par le CER, se propose de réduire la rétention de sel. Plus précisément, il concevra des membranes en mosaïque de charges avec de petites plaques chargées de manière opposée. En utilisant une approche évolutive avec des multicouches de polyélectrolytes, ces membranes peuvent retenir plus de 99 % des MPO et présentent une haute perméabilité à l’eau. MOSAIC devrait non seulement permettre une purification efficace de l’eau, mais également fournir des informations fondamentales sur le transport de masse des membranes pour un avenir durable de l’eau.
Objectif
Our surface and drinking water sources are increasingly threatened by the presence of organic micropollutants (OMPs). OMPs are small molecules (100-1000 Da) that originate from industrial, agricultural and pharmaceutical residues, and can cause long-term harm to humans and ecosystems. While OMPs can be removed from water with existing membrane technologies (e.g. reverse osmosis), these methods have significant limitations: they are energy-intensive and lead to problematic brine waste streams, due to their low water and salt permeability.
In this project I aim to solve these limitations by building charge-mosaic membranes; membranes with small (nm2) oppositely charged patches that allow coupled passage of negative and positive ions. This design, aimed at reducing salt retention, was conceived over 90 years ago, but was never realized in a scalable manner due to its challenging design. Here, I propose a simple and fully scalable approach to achieve such membranes, using polyelectrolyte multilayers (PEMs) of oppositely charged polymers. I will build these charge-mosaic membranes using ultrathin, ultradense layers in an asymmetric PEM approach to achieve a very high (> 99%) retention of OMPs and a high water permeability.
Combined with state-of-the-art modelling, this project will also provide new fundamental insights into membrane mass transport. Moreover, the project will directly lead to membranes with unique separation properties, allowing the design of completely new processes to effectively remove OMPs from waste water and drinking water.
ter.
Champ scientifique
- engineering and technologyenvironmental engineeringwater treatment processesdrinking water treatment processes
- engineering and technologyenvironmental engineeringwater treatment processeswastewater treatment processes
- engineering and technologychemical engineeringseparation technologiesdesalinationreverse osmosis
- natural scienceschemical sciencespolymer sciences
- natural sciencesbiological sciencesecologyecosystems
Mots‑clés
Programme(s)
- HORIZON.1.1 - European Research Council (ERC) Main Programme
Régime de financement
HORIZON-ERC - HORIZON ERC GrantsInstitution d’accueil
7522 NB Enschede
Pays-Bas