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Results of Laboratory Bench Testing

Batch reactivity tests were conducted with the PolyMetallix particles, whereby 20 milliliters of PolyMetallix solution (containing 0.5 grams of iron) were mixed with 20 milliliters of deionized water spiked with 24 mg/L of TCE. The 40 ml VOA vials were tumbled and analyzed at specific timed intervals. After an elapsed time of 24 minutes, the TCE concentration was 0.70 mg/L, a 94% reduction in TCE through reductive dechlorination. For further details, please click here.

Soil samples (4.5 kg) containing 43 to 46 mg/kg PCB's were mixed with 3 pounds of PolyMetallix solution (containing 0.5 pounds of iron) and agitated. After 24 hours, PCB concentrations were approximately 25 mg/kg, a reduction of 40%. After 13 days, PCB concentrations were 12.7 mg/kg, a 69% reduction in PCB concentration. After 60 days, a 92% reduction in PCB concentrations was observed. For further details, please click here.

128 milliliters of PolyMetallix solution (containing 3.2 grams of iron) were mixed with 30 milliliters of water spiked with 2900 mg/L of chromium. After 30 minutes,, the solution was separated from the PolyMetallix particles and analyzed. Chromium concentrations measured were less than the detection level (0.05 mg/L), demonstrating virtually complete chromium reduction by the PolyMetallix particles.

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A treatability study was recently performed to evaluate the ability of PolyMetallix particles (Polyflon Product Nos.: NSPP-GAM2M and NSPP-GAM2MPd) to chemically reduce TCE and perchlorate at the Phoenix-Goodyear Airport North Superfund Site in Arizona. Site soil samples and groundwater were employed in the testing. Soil columns were prepared with mixtures of soils and PolyMetallix particles. Site groundwater, amended with TCE and perchlorate, was pumped upward through the columns to simulate local groundwater flow. The PolyMetallix material successfully degraded the TCE in the groundwater, resulting in reduction rates of 83% in TCE concentrations. Click here to download the entire column study report.