Practice Leader - North America
Dr. Grieco is the North American Practice Leader for Emerging Contaminants. His area of expertise is treatment of emerging contaminants and persistent environmental compounds. He has 26 years of experience in treatability testing, system evaluations, and process design. He has completed several projects related to the study and remediation of ECs, including most recently treatment municipal drinking water and landfill leachate for PFOA/PFOS. He is also a Visiting Professor at SUNY College of Environmental Science & Forestry. He has a BS in Chemical Engineering, MS in Environmental Engineering, and PhD in Bioprocess Engineering and is a Professional Engineer in NY.
Comparative Adsorption: Considering Multiple Adsorbents for More than just PFOA and PFOS
With regard to PFAS treatment, individual States are developing screening values or promulgated drinking water values that are lower than the EPA Lifetime Health Advisory (LHA) values for PFOA and PFOS and/or more inclusive of other PFAS. Moreover, the EPA recently stated that LHAs are expected to be developed for PFBS and GenX this year, demonstrating the rapidly evolving regulatory landscape of PFAS. Limited data exist for comparative adsorption performance for a larger number of PFAS compounds. This presentation provides new pilot operating data treating ground water using four side-by-side adsorbents: GAC, ion exchange (IX), and two novel adsorbents not previously evaluated in field applications. One novel adsorbent is a bio-material developed outside the US, which is optimized for PFAS adsorption; the other is a surface-modified GAC studied under recent SERDP project. Comparative performance and projected life cycle costs will be discussed considering a larger number of 537.1 PFAS compounds.