Organic Resin Anion Exchangers for the Treatment of Radioactive Wastes

摘要

Organic anion exchange resins are evaluated for 99-TcO/sub 4//sup -/ (pertechnate) removed from aqueous nuclear waste streams. Chemical, thermal and radiation stabilities were studied. Selected resins were examined in detail for their selectivities in the presence of I/sup -/, NO/sub 3//sup -/, SO/sub 4//sup =/, CO/sub 3//sup =/, Cl/sup -/ and OH/sup -/. Ion exchange equilibria and kinetic mechanisms were determined. Preliminary investigations of cement encapsulation in polymer modified form were made and some leach studies carried out. (Atomindex citation 20:042678)