Effect of pH on the destruction of complexants with ozone in Hanford nuclear waste [electronic resource].
- Downey, Calif : Rockwell International, 1981. and Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
- Physical Description:
- Pages: 100 : digital, PDF file
- Additional Creators:
- Rockwell International and United States. Department of Energy. Office of Scientific and Technical Information
- Restrictions on Access:
- Free-to-read Unrestricted online access
- Chemical processing of nuclear waste at Hanford has generated some waste solutions with high concentration (0.1 to 0.5M) of N-(hydroxyethyl)-ethylenediaminetriacetic acid (HEDTA), ethylenediaminetetraacetic acid (EDTA), and other organic complexing agents. These complexants must be destroyed bacause they affect radionuclide migration in soils, waste concentration, radionuclide removal, and other waste storage and processing considerations. Previous studies on actual waste solutions demonstrated that preozonation of the alkaline waste significantly improved radionuclide removal. A series of bench-scale experiments using synthetic waste has been performed to determine the optimum pH for most efficient ozone destruction of EDTA. Ozonation of EDTA in synthetic waste was carried out over the pH range of 1 to 14. Potential catalytic materials were examined at different pH levels. The EDTA-ozone reaction rates and stoichiometric requirements were compared and evaluated for the varying conditions.
- Published through SciTech Connect., 06/01/1981., "rho-sa-203", " conf-8106119-2", "DE81029493", Northwest regional American Chemical Society meeting, Bozeman, MT, USA, 17 Jun 1981., and Winters, W.I.
- Funding Information:
View MARC record | catkey: 14420911