The current book chapter presents preliminary work toward the use of spectroscopic on-line monitoring for process control and safeguarding of radiochemical streams. Raman spectroscopy was demonstrated as a method for determining U(VI), nitrate, and nitric acid, while visible-near-infrared (vis-NIR) spectroscopy was demonstrated as a method for determining Pu(IV), Np(V), U(VI) and Nd(III). This method has been established using fuel reprocessing solution stimulants under dynamic flow conditions and on commercial spent nuclear fuel samples. Partial least squares (PLS) models for each analyte were prepared, and the fits of the data presented. A brief review of literature relevant to the use of vibrational spectroscopy and physicochemical measurements for process monitoring of nuclear fuel solutions is reported.
Revised: May 19, 2011 |
Published: March 1, 2011
Citation
Bryan S.A., T.G. Levitskaia, A.J. Casella, J.M. Peterson, A.M. Johnsen, A.M. Lines, and E.M. Thomas. 2011.Spectroscopic On-Line Monitoring for Process Control and Safeguarding of Radiochemical Streams in Nuclear Fuel Reprocessing Facilities. In Advanced Separation Techniques for Nuclear Fuel Reprocessing and Radioactive Waste Treatment: Woodhead Publishing Series in Energy No. 2, edited by KL Nash and GJ Lumetta. Cambridge:Woodhead Publishing.PNNL-SA-70392.