What is it about?
PFAS is commonly found in landfill leachate catchment waters and has historically been extremely difficult to treat due to the complex chemistry that can transition from the landfill waste cells into leachate prior to disposal to environment and/or sewer connections. This article describes the first application of EPOC Enviro's Surface-Active Foam Fractionation (SAFF) process to strip PFAS from leachate (Telge, Sweden). In addition, the article also compares treatment efficacy to the Australian Dept. of Defence ex-situ groundwater project at the Army Aviation Centre Oakey (AACO).
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Why is it important?
This Telge landfill field trial provided superior treatment data compared to the AACO ex-situ groundwater field trial, and proved that PFAS could be removed from complex feedwaters such as leachate whereas traditional treatment processes using GAC and AIX resin commonly fail due to excessive fouling issues.
Perspectives
Foam Fractionation and SAFF represent a new way to manage PFAS contaminated waters where Nature based Solutions (NbS) provide commercial advantage over highly engineered processes using adsorbents that become exhausted and also require management. In addition, SAFF has become the favored separation/concentration process for pairing with on-site PFAS destruction cells currently under commercialization by third parties.
Chief Technology Officer David Burns
Macquarie University
Read the Original
This page is a summary of: Commercial‐scale remediation of per‐ and polyfluoroalkyl substances from a landfill leachate catchment using Surface‐Active Foam Fractionation (SAFF®), Remediation Journal, June 2022, Wiley,
DOI: 10.1002/rem.21720.
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