Water Purification Innovations: Specialized Resins for Safe Elimination of PFAS Contaminants in H2O
In a significant stride towards combating the global issue of PFAS contamination in american water, Dow, a leading company, has developed proprietary absorber resins engineered for high selectivity and performance.
These absorber resins, which can be customised and are compatible with standard filter production processes, have shown effectiveness in removing not only PFAS but also heavy metals like lead, mercury, and cadmium, and precious metals from industrial waste streams.
Per- and polyfluoroalkyl substances (PFAS) are a large family of over 10,000 synthetic chemicals, widely found in drinking water sources across the globe and linked to adverse health effects. InstrAction's absorber resins are fine-tuned to bind selectively PFAS compounds like PFOA, PFOS, and PFBS.
The potential applications of these resins extend beyond water purification. InstrAction is exploring the use of its technology in fields like precious metal recovery and circular chemistry, where selective binding is crucial for extracting valuable or hazardous substances from complex mixtures.
The European Union has proposed a group restriction on PFAS in 2024, while the U.S. Environmental Protection Agency has introduced new maximum contaminant levels for several PFAS in drinking water, set in parts per trillion. This represents a meaningful step forward in the fight against forever chemicals for municipalities, manufacturers, and consumers alike.
InstrAction's absorber resins offer strong performance at low concentrations, in the ng/L (ppt) range, and extraordinary high productivity up to 1000 BV/h. Partners can offer enhanced PFAS protection without sacrificing flow rate or requiring significant design changes by embedding the resin within a carbon block filter or pre-filter.
The company supports lab testing, HPLC-MS/MS-analytics, pilot studies, and co-development projects to ensure the best material configuration for each application. InstrAction collaborates with filter manufacturers and OEMs to develop high-performance systems using their absorber resins.
The absorber resin has shown effectiveness in consumer drinking water filters and portable filtration units, particularly in areas with PFAS contamination. Research is ongoing into making the resins regenerable and biodegradable, further enhancing their environmental profile and cost-effectiveness.
This article will appear in the 23rd edition of a quarterly publication, highlighting the significant strides being made in the fight against PFAS contamination in drinking water.
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