Sorptive Remediation of PFOA using Mixed Mineral and Graphene/Carbon-Based Materials

SYNOPSIS

• This study was totally independent and performed by a world class soil research group at the University of Adelaide.
• This study tested the sorption of PFOA by graphene oxide, iron oxide-modified graphene and RemBind^®.
• Variations in pH and ionic strength did not significantly influence PFOA-sorption by RemBind^® or iron oxide modified graphene.
• It was concluded that the risk of remobilisation of bound PFOA owing to rainfall events is low, but the presence of polar organic solvents may increase leaching risk.
• The potential of using ​‘mixed’ adsorbents like RemBind in‑situ for PFAS-remediation was highlighted, as it provides avenues for enhanced sorption through multiple mechanisms.