Enviropacific have undertaken a number of successful chemical immobilisation treatability trials on PFAS impacted soils. PFOS and PFOA were reduced by >99% and all other PFAS were reported as below the laboratory limit of reporting (LOR).
Soil Immobilisation Treatment Results (Fire Training Facility, VIC)
*Australian Standard Leaching Procedure (ASLP)
The equipment used for the soil immobilisation treatment process is Enviropacific’s Hitachi Soil Recycler. The Soil Recycler is a track-mounted pug mill specifically engineered to provide high shear mixing for treatment of contaminated soils and sediments. The machine efficiently adds a variety of reagents with high accuracy to ensure adherence to specific immobilisation approvals and conformance. The throughput for the Soil Recycler ranges from 50 – 200 tonnes/hour, depending on soil type.
Optimisation trials would be undertaken on site-specific wastes in order to minimise reagent usage.
Enviropacific have comprehensive thermal treatment capabilities. Recent thermal desorption treatability trials conducted by Enviropacifc using a bench-scale rotary kiln furnace on PFAS impacted soils have demonstrated highly effective contaminant removal of all 20 commonly observed PFAS analytes, with >99.9% reduction in PFOS, PFOA, PFHxS and PFBS.
Enviropacific have recently been awarded funding from the AusIndustry Innovation Connections program to undertake a collaborative research project on Understanding Thermal Treatment of Per- and Poly-fluorinated Alkyl Substances (PFAS) in Soils with Professor Eric Kennedy and Associate Professor Michael Stockenhuber at the University of Newcastle. This research will underpin a key area of development and focus for the company.