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Ion Exchange Resins

Higher-selectivity adsorption for the PFAS that are harder to catch

 Ion exchange (IX) resins offer higher selectivity than GAC and can improve removal of certain short-chain PFAS.
We provide IX treatment as a standalone solution for suitable water matrices, or as part of a wider Chromafora treatment train.

What Ion Exchange does well 

IX resins remove PFAS by exchanging ions at binding sites on the resin surface. Compared with GAC, this typically means faster treatment kinetics and higher capacity, which can improve removal of some shorter-chain PFAS compounds that conventional adsorption media struggle to capture.
Performance in landfill leachate, however, depends heavily on matrix stability. Elevated chloride concentrations – common in leachate – compete with PFAS for exchange sites, reducing capacity and accelerating breakthrough. High organic content can also foul the resin over time.

Key considerations for landfill leachate applications

Improved short-chain removal

Higher selectivity than GAC for some short-chain PFAS.

Chloride competition

Elevated chloride concentrations, common in leachate, can compete with PFAS for exchange sites and reduce treatment efficiency.

Fouling risk

High organic content in complex leachate can foul resin and reduce capacity.

Regeneration and waste

Depending on resin type, regeneration can generate a brine or secondary waste stream requiring management; single-use resins require replacement and disposal.

Where it fits

Polishing step 

Placed after SELPAXT or flocculation,  once chloride and organic loading have already been reduced, improving resin life and stability. 

Standalone treatment 

For simpler water matrices with lower fouling risk and a short-chain PFAS profile. 

Do you want to know if IX is the right fit?  

The long-term economics of Ion Exchange depend on matrix composition and resin management. Our team can evaluate your water and recommend whether ion exchange, on its own or combined with another Chromafora technology, is the most reliable route to compliance.

CONTACT AN EXPERT

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