New Paper – Granular activated carbon for removal of perfluoroalkyl and polyfluoroalkyl substances (PFAS) from groundwater

January 28, 2020 – Envirogen announces a new technical paper which documents a successful PFAS groundwater remediation case study.   Perfluoroalkyl and polyfluoroalkyl substances (PFAS) have been discussed extensively in the news media due to their prevalence in groundwater and evidence that they can cause adverse health effects in humans.   

The case study details a treatment system consisted of granular activated carbon (GAC) and ion exchange (IX) processes as polishing steps for target contaminant removal.   Carbon selection proved critical to achieving and maintaining compliance with stringent effluent permit limits. Additionally, lead/lag configuration of the carbon vessels, sampling techniques, and establishment of the optimum carbon changeout frequency significantly contributed to the efficacy of the system.  Read More – PFAS Paper 012820