PFAS soil treatment

Chemical Immobilisation

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.

Thermal Treatment

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.

Read more about our thermal treatment capabilities.

Soil Thermal Treatment Results (Confidential Site)

 

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.