SUMMARY

• PFAS contaminated soil (8mg/kg PFAS) was treated with 0.5% to 5% RemBind.
• Treated and untreated soil was assessed for leachability using the ASLP method and the RemBind treatments resulted in 88.5% (0.5% dosage) to 99.8% (1% dosage) reductions in PFAS leachability.
• Similarly, uptake of PFAS into an Australian native grass was significantly reduced in RemBind treated soils.
• Microtox tests showed that the ecotoxicity of the PFAS and RemBind to the soil microbial population was reduced compared to untreated soils.
• RemBind at commercial dosages of 0.5% to 5% but also beyond to an artificially high dosage of 20% showed no significant ecotoxicity.
• In conclusion, the paper shows that treatment of PFAS soils with commercially relevant dosages of RemBind has the potential to reduce PFAS leachability and plant bioavailability with a low associated ecotoxicity.
• This adds to the growing body of evidence that immobilization using RemBind sorbents can be used as a viable management option for PFAS contaminated soils.