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Dr. Monica C. Regalbuto - Associate Principal Deputy Assistant Secretary for Environmental Management

Dr. Monica C. Regalbuto

Dr. Monica Regalbuto was named Associate Principal Deputy Assistant Secretary for the U.S. Department of Energy (DOE) Office of Environmental Management (EM) in June 2014. In this role, Dr. Regalbuto leads EM’s mission units and applies her technical expertise to advance EM’s cleanup mission across the DOE complex.

Dr. Regalbuto previously served as Deputy Assistant Secretary for Fuel Cycle Technologies in the DOE Office of Nuclear Energy, where she directed a research and development program comprising 10 national laboratories, 32 universities, over 400 scientists, and 300 professors. Dr. Regalbuto also has experience supporting EM as Senior Program Manager in the former Office of Waste Processing, overseeing technical risk reduction in the cleanup programs. 

From 2003 to 2008, Dr. Regalbuto managed a group of 30 researchers as head of the Process Chemistry and Engineering Department in Argonne National Laboratory’s Chemical Sciences and Engineering Division. Argonne — part of DOE’s network of national laboratories — was where Dr. Regalbuto began her career in 1988. There, she helped develop technologies for the treatment of high-level waste at DOE plutonium production sites. As a researcher, she made key contributions to nuclear fuel-cycle technology, including the development of the UREX+ processes, a suite of solvent extraction processes for the recovery of actinides and fission products from spent fuel. Dr. Regalbuto also led research directly related to EM’s mission, such as the successful demonstration of the Caustic-Side Solvent Extraction process that separates cesium-137 from high-level radioactive waste. Dr. Regalbuto has authored multiple journal articles and reports and holds six patents.