Most PFAS treatment technologies do the same thing: capture contamination and move it somewhere else. Activated carbon. Reverse osmosis. Ion exchange. They all produce a concentrated waste stream that still has to be managed, disposed of, and monitored — forever.
Every filtration approach — activated carbon, reverse osmosis, nanofiltration, ion exchange — removes PFAS from the water stream by capturing it in a filter medium or concentrate. The PFAS molecules are not destroyed. They accumulate in the media or reject stream and must eventually be disposed of.
This creates a permanent liability: you haven't solved the contamination problem, you've transferred it. The spent media must be replaced, the concentrate must be managed, and disposal costs compound over decades of operation.
True elimination breaks the carbon-fluorine bond at the molecular level. PFAS compounds don't get captured — they're converted into harmless inorganic minerals: fluoride, carbon dioxide, and water. There is nothing left to dispose of.
This is the only approach that ends the contamination cycle permanently. No ongoing waste stream. No secondary disposal liability. No monitoring obligation for a concentrate that was just moved downstream.
| Technology | Destroys PFAS? | Waste Generated? | Long-Chain & Short-Chain? | Ongoing Disposal Cost? | Hexivon Elimination |
|---|---|---|---|---|---|
| Granular Activated Carbon (GAC) | No | Saturated media — hazardous waste disposal required | Long-chain only; poor short-chain capture | Ongoing — media replacement every 2–5 years | Destroys both. Zero waste. |
| Powdered Activated Carbon (PAC) | No | PFAS-laden sludge requiring incineration or landfill | Better than GAC, still limited on short-chain | Ongoing — continuous chemical cost | Destroys both. Zero waste. |
| Reverse Osmosis (RO) | No | Concentrated reject stream — all captured PFAS relocated | Good rejection rate, but concentrate requires treatment | Ongoing — reject stream disposal | Destroys both. Zero waste. |
| Nanofiltration (NF) | No | Concentrated reject stream with all PFAS | Variable; short-chain PFAS may pass through | Ongoing — reject stream disposal | Destroys both. Zero waste. |
| Ion Exchange (IX) | No | Spent resin — PFAS-contaminated hazardous material | Selective resins required for each PFAS class | Ongoing — resin replacement or regeneration | Destroys both. Zero waste. |
| High-Temperature Incineration | Partial | Ash and off-gas require management; incomplete at low temps | Effective only above ~1,100°C; energy intensive | High energy cost; emissions monitoring | Ambient temp. No emissions. |
| Hexivon Photocatalytic Elimination | Yes — permanently | None — fluoride, CO₂, and water only | Long-chain and short-chain destroyed | None | 40 ppt → N/D. Pace Labs validated. |
GAC and PAC are effective adsorbents — until they're full. Carbon media must be replaced or regenerated every two to five years. The spent carbon is classified as PFAS-contaminated hazardous waste. It typically goes to high-temperature incineration, which is energy-intensive and may itself produce PFAS-related emissions if not conducted above 1,100°C.
The PFAS was in the water. Now it's in the carbon. Then it's in the incinerator ash. It never stopped existing — it just kept moving.
RO membranes reject PFAS from the permeate stream — which sounds like removal, but produces a reject stream typically 20–30% of total volume that contains nearly all the captured PFAS at 4–5× concentration. This concentrate needs to be treated, evaporated, or disposed of.
For a municipal plant treating 1 million gallons per day, that's 200,000–300,000 gallons of highly concentrated PFAS reject water that needs somewhere to go — every single day.
Ion exchange resins can achieve excellent PFAS removal rates and handle short-chain PFAS compounds that activated carbon struggles with. But selectivity comes at a cost: different resin formulations are needed for different PFAS classes, and spent or regenerated resin still carries the contamination.
Single-use resins go to incineration. Regenerable resins produce a concentrated brine. Neither approach destroys the PFAS.
The carbon-fluorine bond — ~130 kcal/mol — is one of the strongest single bonds in organic chemistry. It's why PFAS don't break down in the environment. It's why conventional treatment can't destroy them.
Hexivon's photocatalytic process uses proprietary materials and UV energy to overcome that bond energy at ambient temperature and pressure. In minutes, PFAS molecules become fluoride ions, carbon dioxide, and water. Nothing left to manage.
Filtration buys time. Elimination solves the problem. Hexivon is ready to deploy.