Relative Release Rates of Nitrate, Tc, Cs and Sr from Saltstone

Oblath, S.B.

Savannah River Site (S.C.)

关键词: Leaching;    Sorptive Properties;    Radioactive Waste Disposal;    Nitrates;    36 Materials Science;   

DOI  :  10.2172/783923
RP-ID  :  DPST-84-620
RP-ID  :  AC09-76SR00001
RP-ID  :  783923

美国|英语

来源: UNT Digital Library

【 摘 要 】

The relative release rates of nitrate, cesium, strontium, and technetium have been measured from saltstone and soilcrete (salt-stone containing soil) under saturated conditions. These are the first measurement of radionuclide release rates from saltstone, and confirm the assumptions used earlier in mathematical modeling. Both saltstone and saltcrete have comparable leach rates for nitrate and pertechnetate anions. Cesium and strontium are more strongly held in both materials, but show differences between the two matrices. These data fully support the assumption that no species leaches more rapidly than nitrate.