Remediation of soils contaminated with particulate depleted uranium by multi stage chemical extraction

- Batch leaching was examined to remediate soils contaminated with munitions depleted uranium.
- Site specific maximum extraction was 42-50% total U in single batch with NH4HCO3.
- Analysis of residues revealed partial leaching and secondary carbonate phases.
- Sequential batch leaching alternating between NH4HCO3 and citric acid was designed.
- Site specific extraction was increased to 68-87% total U in three batch steps.