US-Dutch collaboration on new adsorbents for removal of micropollutants
Dutch-based organisations Water utility Waternet and engineering firm Witteveen+Bos announced their collaboration with CycloPure (USA) that is commercializing a new class of selective adsorbents to deal with micropollutants of emerging concern such as pharmaceuticals, pesticides and per- and polyfluoroalkyl substances (PFAS).
Based on extensive research at Cornell University and Northwestern University (USA), CycloPure designed an adsorbent called High Affinity Cyclodextrin Polymers (HACPs) that is now in early production and pilot testing.
Witteveen+Bos and Waternet jointly evaluate the potential of these promising adsorbents for effluent polishing at waste water treatment plants in the Netherlands, and develop the best suitable treatment concept.CycloPure claims the uptake of Bisphenol-A (BPA) by its CD-MP in seconds as compared to minutes for activated carbon.
CycloPure’s technology allows the conversion of renewable cyclodextrins - derived from corn starch - into highly adsorbent materials that are ideally suited for water treatment applications.
Its adsorbents gain their strong binding affinity from cyclodextrin inclusion complexes that are optimally sized for the attraction and removal of micropollutants.
With high capacity and rapid uptake at trace pollutant concentrations, CycloPure’s HACPs feature lower dosing to achieve adsorption objectives, and can be regenerated on-site with a very high reuse percentage.
Witteveen+Bos provides consulting- and engineering services for several regional Dutch water authorities and is highly involved in the micropollutant topic.
Waternet is the water utility for Amsterdam that built a full-scale effluent polishing plant (in front on top photo) removing micropollutants in 2012 and are currently optimizing this system.
CycloPure has developed two novel adsorbent formulations, CD-MP and CD-PFAS, for the removal of micropollutants from water. The company’s patented HACPs can be produced in varying particle sizes, allowing for flexible use across a broad spectrum of water treatment applications.
This news item was originally published on the website of Witteveen+Bos.
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● Expertise: Water technology
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