The nature of contaminant uranium phases at Fernald
- Argonne National Lab., IL (United States)
- IT Corporation, Albuquerque, NM (United States)
Uranium-contaminated soils at the Fernald Site in Ohio have been examined using transmission electron microscopy. The uranium-bearing phases were identified as calcium uranyl phosphate (meta-autunite), uranium oxide (uraninite), uranium metaphosphate [U(PO{sub 3}){sub 4}], uranium calcium oxide, uranium silicate (boltwoodite), and uranium silicide. Uranium have been deposited on the soil through chemical spills and from the operation of an incinerator plant at the site. The uranium metaphosphate phase was found predominantly at an incinerator site at Fernald. Carbonate leaching in an oxygen environment has removed some of the U(IV) phases, however [U(PO{sub 3}){sub 4}] has not been removed by any of the chemical remediation technologies. The identified phases have been included in geochemical modeling of the uranium, these studies show that meta-autunite is the solubility controlling phase for uranium in Fernald soils.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 210171
- Report Number(s):
- CONF-9509139--
- Country of Publication:
- United States
- Language:
- English
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