Phosphate-Based Dechlorination of Electrorefiner Salt Waste using a Phosphoric Acid Precursor Article Swipe

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Phosphoric acid Salt (chemistry) Phosphate Radioactive waste Chlorine Chemistry Waste management Electrochemistry Molten salt Chloride Nuclear chemistry Inorganic chemistry Organic chemistry Physical chemistry Engineering Electrode

Paige Murray , Harmony Werth , Sean Sullivan , Brian J. Riley , Michael F. Simpson , Charmayne Lonergan , Krista Carlson ·

YOU? · · 2024 · Open Access · · DOI: https://doi.org/10.1021/acsomega.4c00542 · OA: W4394857276

Electrochemical processing of spent nuclear fuel in molten chloride salts results in radioactive salt waste. Chlorine removal from the salt has been identified as an effective and efficient first step in the management of high-level waste. In this work, a simple salt was dechlorinated with a phosphoric acid phosphate precursor, resulting in a glassy dechlorinated product. The dechlorination efficacy was evaluated in air and argon environments. This work serves as an initial step to advance the Technological Readiness Level of H<sub>3</sub>PO<sub>4</sub>-based dechlorination step toward implementation of iron phosphate waste forms to immobilize electrochemical fuel reprocessing salt waste streams.