Evaluation of Ion Exchange Materials in K Basin Floor Sludge and Potential Solvents for PCB Extraction from Ion Exchange Materials

Schmidt, A J; Klinger, G S; Bredt, P R

doi:10.2172/5089

Cited by 5 publications

(5 citation statements)

References 3 publications

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“…Visual observations of this sample confirmed that the sample was almost exclusively composed of organic ion exchange resin beads. In a previous investigation, the resin beads were identified as Purolite NRW 37 ion exchange resin (Schmidt et al 1998).…”

Section: Consolidated Sludge Samples: Kc-1 and Kc-6mentioning

confidence: 99%

Gas Generation from K East Basin Sludges - Series II Testing

Bryan¹,

Delegard²,

Schmidt³

et al. 2004

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This report was originally published in March 2001. In January 2004, a transcription error was discovered in the value reported for the uranium metal content of KE North Loadout Pit sample FE-3. This revision of the report corrects the U metal content of FE-3 from 0.0013 wt% to 0.013 wt%. The text also has been revised to more accurately describe the expected uranium metal reactions being measured and evaluated. Experimental Matrix for Series II Gas Generation Tests and Uranium Metal Estimates Sludge Sample Fraction Test Temp., °C Estimated Uranium Metal Content Test Description Sample ID Settled Sludge, g Start ~300 hr Final ~650 hr Wt % U Metal (Settled Sludge Basis) Estimation Technique KE Canister Sludge (Consolidated Sampler Used in Single-Pull Mode) Unmixed KC-1 KC-1 (whole) 23.8 60 95 0.065 Fission Product Gas Mixed KC-1 KC-1 (whole) 25.6 60 95 0.56 Fission Product Gas U Metal in KC-1 Plus 500 µm 14.2 80 95 3.7 Fission Product Gas U Metal in KC-1 Minus 500 µm 22.3 80 95 0.14 Fission Product Gas Single-Pull Core KE Floor and Pit Sludge Samples Main Floor (FE-1) FE-1 (whole) 27.0 90 95 0.022 Fission Product Gas North Loadout Pit (FE-3) FE-3 (whole) 21.2 90 95 0.013 Corrosion Gas Weasel Pit (FE-5) FE-5 (whole) 20.7 90 95 0.027 Fission Product Gas Dummy Elevator and Tech View Pit (FE-4 + FE-6) FE-4 (63%) + FE-6 (37%) 16.1 (10.2/5.9) 90 95 0.0052 Fission Product Gas Other Tests Organic Ion Exchange Resin Sludge KC-6 (whole) 19.1 90 95 0.026 Corrosion Gas 1996 KE Canister Sludge 96-06 19.5 80 95 0.90 Fission Product Gas v gas generation testing. The technique used to estimate uranium metal content (corrosion gas generation or fission product gas release by the corrosion) is also noted in the table. The uranium metal content is estimated based on fission product gas release, where available, because of its higher reliability, especially at low concentrations. Gas Generation Testing Gas production observed in the Series II tests with KE Basin sludge was generally lower than observed in similar Series I studies of KE Basin canister and floor sludges (Delegard et al. 2000). The lower gas generation rates can partially be attributed to the longer storage periods at hot cell temperatures experienced by the Series II sludge samples. All tests in Series II (conducted with sludge from samples KC-1, FE-1, FE-3, FE-5, FE-4/6, KC-6, and 96-06) produced CO 2 as the predominant gas product with lower concentrations of H 2 , except the KC-1 P500 test, which produced predominantly H 2 gas with lower CO 2 concentrations. Other gases released or produced were Xe, Kr, and hydrocarbons (methane, ethane, and higher hydrocarbons). Trace amounts of O 2 and N 2 present from atmospheric contamination also were consumed in each test. Similar gas generation and consumption was observed in the Series I tests and in gas collection tests from KE canister sludge (Makenas et al. 1997). The release of CO 2 in these tests may be due to the reaction of schoepite with calcite to form becquerelite and CO 2 , with some (but not all) of the CO 2 also...

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Section: Consolidated Sludge Samples: Kc-1 and Kc-6mentioning

confidence: 99%

Gas Generation from K East Basin Sludges - Series II Testing

Bryan¹,

Delegard²,

Schmidt³

et al. 2004

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“…Sample KES-H-08 also contains irregularly shaped white granules approximately 1 mm long. The granules have been identified by X-ray diffraction (XRD) as mordenite and arise horn use of Norton Industries Zeolon-900~in the treatment of K Basin water to remove '37CS (Schmidt et al 1998).…”

Section: Background and Approachmentioning

confidence: 99%

Radionuclide Leaching from Organic Ion Exchange Resin

Delegard¹,

Rinehart²

1999

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“…Organic ion exchange beads have previously been observed in certain KE Basin sludges and have been identified as Purolite NRW-37 Nuclear Grade Mixed Bed Resin (Schmidt et al 1998). Most of the beads were visible in the Tyler 32 and Tyler 60 meshes NW-37 is predominantly between 15 and 40 mesh (Tyler)].…”

Section: Small-scale Wet Sievingmentioning

confidence: 93%