Permanganate Oxidants
Potassium and sodium permanganate for in situ chemical oxidation (ISCO) — a proven, powerful approach for destroying chlorinated solvents and organic contaminants in groundwater.
What is Permanganate ISCO?
Permanganate (MnO₄⁻) is one of the most widely used oxidants for in situ chemical oxidation of contaminated groundwater. When injected into the subsurface, permanganate reacts with organic contaminants by breaking carbon-carbon double bonds — transforming hazardous compounds like TCE and PCE into harmless byproducts (carbon dioxide, chloride ions, and manganese dioxide).
Permanganate has been used in environmental remediation for over two decades and is valued for its long persistence in the subsurface, ability to treat a wide range of contaminants, and relatively straightforward field application. Hepure offers both potassium permanganate and sodium permanganate for ISCO applications.
Hepure offers both potassium permanganate (KMnO₄) and sodium permanganate (NaMnO₄), each with distinct advantages depending on your site conditions and project requirements.
Two forms, tailored to your needs
Hepure offers both potassium and sodium permanganate. The right choice depends on your required concentration, site access, and budget.
The Workhorse
The most widely used permanganate form for ISCO. Available as a dry crystalline solid that you mix on-site, giving you full control over concentration.
Best for
- Large-volume applications where cost matters
- Sites with on-site mixing capabilities
- Lower concentration injection programs
- Long-term PRB-style applications
The Powerhouse
A liquid concentrate that delivers significantly higher MnO₄⁻ concentrations than potassium permanganate — ideal when you need maximum oxidant loading.
Best for
- High contaminant mass / high TOD sites
- No on-site mixing required (ready to use)
- Space-constrained or indoor projects
- DNAPL source area treatment
How permanganate ISCO works
In situ chemical oxidation with permanganate is a straightforward, well-proven treatment process.
Site Characterization
Delineate the contaminant plume and determine total oxidant demand through bench-scale testing.
Design & Dosing
Calculate permanganate quantities and injection spacing based on site geology and contaminant mass.
Field Injection
Deliver permanganate solution into the contaminated zone via direct-push, wells, or recirculation.
Monitor & Verify
Track contaminant reduction through post-injection monitoring. Apply additional rounds as needed.
What can permanganate destroy?
Permanganate is most effective against contaminants with carbon-carbon double bonds, but its versatility extends to a wide range of organics.