Prasad Galhena

PFAS Removal and Destruction with the Activated Carbon Re-Activation Process​

Prasad Galhena, Environmental Scientist and Process Engineer, DESOTEC US LLC

High-temperature thermal reactivation is a critical step in the sustainable management of spent activated carbon used for air and water treatment, particularly when addressing emerging contaminants such as PFAS. This presentation explains the fundamentals of thermal reactivation and the operating conditions required to effectively destroy PFAS compounds through high-temperature treatment. It will discuss the fate of PFAS during reactivation, destruction mechanisms, and how regulatory compliance is ensured through controlled process conditions and air pollution control systems. Potential byproducts formed during reactivation and their proper management will also be reviewed. Finally, the presentation will provide practical guidance on selecting a compliant reactivation facility and conclude with a mobile carbon system case study demonstrating successful reactivation and reuse of activated carbon in a real-world application.

Prasad Galhena brings nearly fifteen years of experience in the activated carbon industry, with a strong background as an Environmental Scientist and Process Engineer. He holds dual Master’s degrees in Environmental Engineering and Environmental Studies from California State University, Fullerton. Currently, an Applications Engineer at Desotec US LLC, Prasad leverages his diverse expertise to deliver activated carbon purification solutions. His broad technical knowledge supports the development and optimization of activated carbon technologies across a range of environmental and industrial applications.