Adsorption/membrane filtration as a contaminant concentration and separation process for mixed wastes and tank wastes. 1998 annual progress report

Technical Report · Mon Jun 01 00:00:00 EDT 1998

DOI:https://doi.org/10.2172/13441· OSTI ID:13441

Benjamin, M M; Korshin, G

'This report describes progress through May, 1998, which is a little past mid-way through the second year of a three-year project. The goal of the research is to develop a treatment system for the separation of contaminants in low-organic Hanford tank wastes into various sub-groups that are relatively easy to treat further to yield products that are amenable to final disposal. The main target contaminants are Sr and Cs, although heavy metals and actinide-group elements are also targets. Effort during the first half-year of the project was devoted primarily to development of experimental and analytical techniques that could be used to test and quantify the treatability of Sr and Cs in the extremely complex matrix of the tank wastes. The treatment technologies to be tested for isolation of Sr from other waste constituents included adsorption of Sr onto various mineral solids and membrane separation of particulate from dissolved Sr. The proposed technology for treating Cs was electrochemically controlled, reversible binding of the Cs to hexacyanoferrates. Results obtained during the remainder of the first year suggested that hematite (a-Fe{sub 2}O{sub 3}) and iron-oxide-coated sand (IOCS) were the best adsorbents for Sr among the oxides tested, and work during the second project year followed up on that result.'

• Research Organization: Univ. of Washington, Seattle, WA (US)
• Sponsoring Organization: USDOE Office of Environmental Management (EM), Office of Science and Risk Policy
• OSTI ID: 13441
• Report Number(s): EMSP-55146-98; ON: DE00013441
• Country of Publication: United States
• Language: English

Related Subjects

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05
Progress Report
Measuring Instruments
Measuring Methods
Radioactive Wastes
Chemical Wastes
Decontamination
Decommissioning
High-Level Radioactive Wastes
Radioactive Materials
PROGRESS REPORT
MEASURING INSTRUMENTS
MEASURING METHODS
RADIOACTIVE WASTES
CHEMICAL WASTES
DECONTAMINATION
DECOMMISSIONING
HIGH-LEVEL RADIOACTIVE WASTES
RADIOACTIVE MATERIALS