Krista Carlson | Chemical and Materials Engineering Seminar Series

Title: Potential waste forms for off-gas and salt waste streams from molten salt reactors and electrochemical reprocessing

Abstract: Molten salt reactors (MSRs) are candidates to replace current nuclear reactor technologies in the U.S. In addition to having more economical and reliable designs, MSRs are amenable to a closed fuel cycle, in which electrochemical reprocessing can be performed to recycle the used nuclear fuel. This talk will give an overview of the salt and off-gas waste stream from these salt-based nuclear processes. Salt waste streams are a result of fission product accumulation in the salt. Off-gas waste streams are produced during operation due to a variety of radioactive gaseous fission products volatilizing into the off-gas effluent. In both cases, the waste must be immobilized in chemically and mechanically robust waste forms that are suitable for a disposal in a geological repository.

Bio: Dr. Krista Carlson joined the Department of Chemical and Materials Engineering at the University of Nevada, Reno as an Associate Professor in 2021. She has a BS in Glass Science Engineering and a PhD in Glass Science from the New York State College of Ceramics at Alfred University. Carlson’s interest in the development of new materials for environmental purposes has led her to research glass and ceramic materials for the capture and immobilization of radioactive elements produced during nuclear-related processes. She has been developing methods to dehalogenate salt waste generated during electrorefining and molten salt reactor operation, and the subsequent production of chemically and mechanically durable halide-free ceramic waste forms comprised of analogous geological mineral assemblages. As the off-gas from these processes also needs to be managed, her group has recently developed metal functionalized high specific surface area membranes for radioiodine capture. Carlson has been continuously funded by the Department of Energy for her waste form research since 2016. She is currently the Secretary of the American Ceramics Society Energy Materials and Systems Division.

Dial-In Information

Meeting ID: 846 0655 5724

Passcode: 699024

Friday, October 15 at 12:00 pm to 1:00 pm

Virtual Event