Il Han is a postdoctoral researcher in the Department of Civil and Environmental Engineering at Princeton University. Il received his PhD from the Yonsei University, Korea and worked as a project coordinator for Daelim Industrial Ltd. before starting research career at the Yonsei. His work focuses on environmental antibiotic resistance and environmental risk analysis of natural and anthropogenic pollutants. At Princeton, Il is investigating biodegradation of chlorinated ethenes and petroleum products by applying Feammox process.

Ayla Bilgin is a visiting fellow in the Department of Civil and Environmental Engineering at Princeton University. Ayla is currently an Assistant Professor in the Department of Environmental Engineering at Artvin Coruh University, Turkey. Ayla received her Ph.D. from the Department of Environmental Engineering at Hacettepe University in Ankara, Turkey, where her research focused on chlorinated pesticide bioremediation. Before returning to academia, Ayla worked as a environmental engineer in the private sector on environmental impact assessment and environmental consulting in Ankara, Turkey. Her research areas include environmental impact assessment, environmental law, environmental management, water quality, and water treatment.  At Princeton, in the Biogeochemistry Research Group, Ayla is investigating copper bioremediation under anaerobic conditions.