Supernatant Treatment Considerations for the Neutralized Waste at West Valley

Abstract

The neutralized high-level waste, stored at the Western New York Nuclear Service Center in West Valley, New York, was produced during the operation of the Nuclear Fuel Service, Inc. commercial nuclear fuel reprocessing plant. The supernatant is a highly concentrated salt solution (NaNO3 , NaOH, Na2SO4 and NaCl) containing essentially all of the dissolved cesium as the primary radioactive component. The sludge is primarily iron and aluminum hydroxides and contains strontium and the bulk of the long-lived isotopes. The supernatant will be treated to remove essentially all of the radioactivity and then be concentrated and disposed of as low level nuclear waste. The following supernatant treatment considerations have been evaluated on a laboratory scale using simulated West Valley waste: 1) Organic ion exchange resins; 2) Inorganic ion exchange media; 3) In-tank processing. These processes will be described and preliminary laboratory data will be presented.

Performance characteristics and regeneration of a tetraphenylboron(III) selective electrode

“…Recently, the use of tetraphenylborates is a growing concern in many fields. They have been used in biological studies (1)(2)(3)(4), in construction of solar batteries (5), and in nuclear waste treatment (6)(7)(8)). In the analytical chemistry field, sodium tetraphenylborate (NaTPB) has been used in titri-metric determination of some pharmaceutical compounds (9)(10)(11).…”