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SREX: A NEWPROCESS FOR THE EXTRACTION AND RECOVERY OF STRONTIUM FROM ACIDIC NUCLEAR WASTE STREAMS
Abstract
A new process for the extraction and recovery of strontium from acidic waste streams is described. In this process, called SREX (for Strontium Extraction), strontium is extracted from acidic ( ≥ 1 M HNO3) solution using a 0.20M solution of di-t-butylcyclohexano-18-crown-6 in 1-octanol. Extracted strontium is readily stripped from the organic phase using either water or dilute (<0.05 M) HNO3. Tests of the process on a synthetic dissolved sludge waste solution show that only strontium, barium, and technetium are appreciably extracted by the crown ether. Prolonged exposure of the process solvent to nitric acid at elevated temperatures or to ≤ 50 Wh/L γ radiation from a 60Co source produces essentially no deterioration in its performance. Benchtop batch countercurrent extraction experiments show that 99.7% of the strontium initially present in a feed solution can be removed in only three extraction stages.
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Cited by
A NOVEL STRONTIUM-SELECTIVE EXTRACTION CHROMATOGRAPHIC RESIN*
Philip Horwitz, E., Chiarizia, R., & Dietz, M. L. (1992) · Solvent Extraction and Ion Exchange · doi:10.1080/07366299208918107 · Cited by 770
Self-citationDietz, M. L., Dzielawa, J. A., Laszak, I., Young, B. A., & Jensen, M. P. (2003) · Green Chem. · doi:10.1039/b310507p · Cited by 276
Self-citationPeptide Receptor Radionuclide Therapy: An Overview
Dash, A., Chakraborty, S., Pillai, M. R. A., & Knapp, F. F. (. (2015) · Cancer Biotherapy and Radiopharmaceuticals · doi:10.1089/cbr.2014.1741 · Cited by 128
Metadata
- Authors
- Horwitz, E. P., Dietz, M. L., & Fisher, D. E.
- Venue
- Solvent Extraction and Ion Exchange
- Publisher
- Informa UK Limited
- Published
- 1991-02
- Volume
- 9
- Issue
- 1
- Pages
- 1-25
- ISSN
- 0736-6299 (ISSN-L)
- 1532-2262
- OpenAlex
- W2092984171
- Cited by
- 284
- References
- 0
- FWCI
- 7.30
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: SREX: A NEWPROCESS FOR THE EXTRACTION AND RECOVERY OF STRONTIUM FROM ACIDIC NUCLEAR WASTE STREAMS. https://app.cochat.ai/papers/10.1080/07366299108918039
- The paper
- Horwitz, E. P., Dietz, M. L., & Fisher, D. E. (1991). SREX: A NEWPROCESS FOR THE EXTRACTION AND RECOVERY OF STRONTIUM FROM ACIDIC NUCLEAR WASTE STREAMS. Solvent Extraction and Ion Exchange. https://doi.org/10.1080/07366299108918039
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
