How to eliminate PFAS?
- Le charbon français
- Feb 14
- 2 min read
PFAS: Why does our filtering media achieve 90% reduction?
PFAS — often called perennial pollutants — have become one of the major health issues of our time. Present in the drinking water of many regions, they accumulate in the environment and in the body, with effects that are still largely studied but already worrying.
Faced with this reality, an essential question arises: how to effectively reduce PFAS in everyday water?
At BIJIN/French Activated Carbon, we have developed a multi-layered technology capable of achieving 90% certified reduction , thanks to a unique combination of premium activated carbon and next-generation selective resins. Here's why this approach works—and why it outperforms conventional solutions.
💧 1. Understanding PFAS: pollutants that are difficult to eliminate
PFAS (per- and polyfluoroalkyl) are extremely stable molecules, used since the 1950s in thousands of applications: food packaging, textiles, fire-fighting foams, non-stick coatings…
Their distinguishing feature:
They do not deteriorate .
They accumulate ,
They easily pass through conventional filters .
This is why traditional solutions (activated carbon alone, basic household filters, poorly sized reverse osmosis systems) struggle to eliminate them.
🔬 2. Multilayer technology: French activated carbon: a suitable solution to PFAS
Our filtering medium combines three complementary materials:
1. Activated coconut charcoal COC-L1000
It adsorbs some of the lighter PFAS and prepares the water for the selective resin. Its microporous structure (1100 m²/g) allows it to efficiently capture organic molecules and some short PFAS.
2. PFAS-selective resin Purolite Purofine™ PFA694E
This is what makes the difference. Thanks to a dual ionic + hydrophobic mechanism, it captures the remaining PFAS, including long molecules (C4 to C12), sulfonates and carboxylates.
3. Purolite A520E Nitrate Resin
It does not act on PFAS, but completes the overall purification by removing nitrates, which are often present in the same geographical areas.
📊 3. Measured results: –90% PFAS
The analyses carried out show a clear and verified reduction:
Raw water: 0.098 µg/L
Filtered water: 0.010 µg/L → Reduction: -90%
These results are in line with European Directive 2020/2184 , which sets a maximum threshold of 0.1 µg/L for the sum of PFAS.
Our filtering medium therefore makes it possible to obtain water well below regulatory limits , with levels close to undetectable (1–5 ppt).
See the comparative BEFORE/AFTER analyses of drinking water:
🌿 4. Why our solution
works better than conventional filters
Because it relies on a synergy of materials , and not on a single filtering medium.
Traditional filters often fail for three reasons:
They only retain the long-acting PFAS.
They saturate quickly,
They are not designed for low but persistent concentrations.
Our multi-layered technology, however:
treats all types of PFAS ,
offers rapid kinetic energy ,
maintains a high capacity over time ,
guarantees a measured and certified reduction .
💧 Conclusion: Safer, healthier, clearer water
Reducing PFAS is no longer an option: it is a health necessity. With a certified reduction of 90% , our filtering media provides a reliable, sustainable and appropriate solution to current challenges.
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