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Continuous, real-time analysis of radioactive waste achieved at PNNL

Monitoring system capable of working in complex, harsh environments

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September 13, 2006 Share This!

RICHLAND, Wash. — An improved monitoring system for providing continuous analysis of high-level radioactive waste has been developed by Pacific Northwest National Laboratory researchers and was reported at the national meeting of the American Chemical Society.

The system features on-line Raman spectroscopy that quickly generates real-time data and analysis. PNNL researcher, Samuel Bryan, says the monitoring system is capable of simultaneously and continuously quantifying the levels of all the chemically-significant anions within the waste, such as nitrate, nitrite, phosphate, carbonate, chromate, hydroxide, sulfate and aluminate. The total sodium ion concentration was determined independently by modeling inputs from on-line conductivity and density meters.

The system is adaptable to monitoring in a variety of harsh environments. Bryan notes that system components and analytical tools of the process monitor can be tailored to monitor a variety of complex mixtures such as pulp and paper processing liquids, electroplating solutions, as well as radioactive tank wastes.

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Samuel Bryan made his presentation at the 232nd ACS National Meeting in San Francisco, CA, Wednesday, September 13, at 8:30 a.m., at the Moscone Convention Center in Room 252/254.

PNNL LogoInterdisciplinary teams at Pacific Northwest National Laboratory address many of America's most pressing issues in energy, the environment and national security through advances in basic and applied science. Founded in 1965, PNNL employs 4,400 staff and has an annual budget of nearly $1 billion. It is managed by Battelle for the U.S. Department of Energy's Office of Science. As the single largest supporter of basic research in the physical sciences in the United States, the Office of Science is working to address some of the most pressing challenges of our time. For more information on PNNL, visit the PNNL News Center, or follow PNNL on Facebook, Google+, Instagram, LinkedIn and Twitter.

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