New Membrane Traps Even Small PFAS Molecules in Water
Even small PFAS molecules can now be removed from water, thanks to a specialized membrane developed by researchers at Monash University.
Equipped with nanoscale channels, the water filtration membrane is made from beta-cyclodextrin modified graphene oxide (GO-βCD) using shear alignment printing. It has a unique structure that traps forever chemicals while still allowing water to pass through.
Dr Sally El Meragawi, study's co-researcher, highlighted how this development can improve water treatment strategies worldwide:
“By combining advanced materials with smart chemistry, we’ve created a highly efficient way to tackle this global contamination issue. The unique structure of our membrane enables it to effectively remove even the smallest PFAS molecules. Our approach also paves the way for future membrane technologies tailored for removing targeted contaminants in drinking and wastewater treatment applications. It also retains key nutrients in water, making it an attractive method for use alongside traditional nanofiltration systems.”
Based on the conducted tests, the Monash-designed membrane proved to be more effective than the widely used polyamide membranes in removing PFAS molecules. The team’s tests and simulations also showed that the modified membrane formed an energetic barrier, further inhibiting PFAS movement under different temperatures without affecting water flow.
The work of the Monash University researchers is supported by the Research Hub for Advanced Manufacturing with 2D Materials of the Australian Research Council, along with Clean TeQ Water and its subsidiary, NematiQ.
Clean TeQ Water CEO Peter Voigt expressed his enthusiasm and support for the Monash-designed membrane:
“The development of a modified graphene membrane for PFAS removal represents an exciting advancement in water treatment. NematiQ looks forward to collaborating closely with Monash University to bring this innovative technology to market.”
This study was featured in the ACS Nano journal.
Read the full article here to learn more about the GO-βCD membrane.
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