John Regan

John Regan is a Professor of Environmental Engineering at the Department of Civil and Environmental Engineering, Pennsylvania State University. His research focuses on biological processes, particularly nutrient removal, microbial fuel cells, and microbial ecology. He is affiliated with the Institute for Energy and the Environment (IEE) and leads projects related to water sustainability and integrated energy systems.

Key research interests include biofilm dynamics in water distribution systems, fermentative hydrogen production, and methanogenic systems. His work bridges laboratory studies and field applications, addressing challenges in wastewater treatment and environmental biotechnology.

Recent publications emphasize innovations in microbial fuel cell performance optimization, polyphosphate-accumulating organisms, and microbial community analysis in bioremediation contexts. His interdisciplinary approach integrates electrochemistry, microbiology, and environmental engineering.

Regan has contributed to seed grants for projects like 'Survey of Soil Microbial Communities in the Páramo' and 'Biofilms Impact on Microplastics Transport.' His lab collaborates on projects involving microbial diversity in denitrifying bioreactors and phosphorus cycling in streams.