Tank 41 Salt Dissolution Flowsheet Modeling

Pike, Jeffrey

doi:10.2172/799375

Cited by 5 publications

(19 citation statements)

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“…The bulk density of the saltcake samples from Tank 10H varied from 1.98 to 2.17 g/cm 3 and is consistent with the range of previously reported values for saltcake samples from other waste tanks (see Table 4). The middle sample from Tank 10H, HTF-610, had the highest bulk density of the three Tank 10H samples and represents the highest bulk density reported using the thin walled sampling tube technique.…”

Section: Physical Analysissupporting

confidence: 90%

“…For the DI water dissolutions, aliquots were taken from the liquid portion after agitation and settling, although no significant residual solids were visible. The aqua regia dissolutions were submitted to radiological chemistry for 137 Cs (gamma scan), Pu isotopics, 241 Am, and 90 Sr, inductively coupled plasma -emission spectroscopy (ICP-ES) for elemental analysis, inductively coupled plasma -mass spectroscopy (ICP-MS) for certain actinide and fission product quantification, and atomic absorption (AA) spectroscopy for the measurement of As, Se, Hg, and K. The water dilutions/dissolutions were submitted for ion chromatography (IC) for anion characterization, wet chemistry/titration for total base, free hydroxide, and CO 3 2-analysis, and total inorganic and organic carbon (TIC/TOC) analysis. An additional portion of the water-dissolved sample was submitted for 14 C analysis.…”

Section: Chemical and Radiological Analysismentioning

confidence: 99%

“…The SIL used to saturate the sample was a 10. 3 1.5 M NaNO 2 2.5 M After the sample was saturated, the falling head apparatus was assembled (see Figure 5). A burette was used as the SIL reservoir and a standpipe with overflow was connected to the top of the sample to maintain a constant pressure on the discharge side of the sample.…”

Section: Permeabilitymentioning

confidence: 99%

“…Tank 10H originally contained a greater quantity of saltcake, but a density-driven dissolution demonstration was performed in 1979 by the addition of Receiving Basin for Offsite Fuels (RBOF) waste from Tank 23H. 3,4 At the time of sampling, Tank 10H contained approximately 71 inches of salt and no supernate, and the saltcake temperature was 30 °C.…”

Section: Introductionmentioning

confidence: 99%

“…An alternative free hydroxide estimate is provided as a calculated value by taking the total base and subtracting the contribution of aluminate and carbonate ions. Total inorganic carbon is reported as mass of CO 3 2-and total organic carbon is reported as mass of carbon.…”

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confidence: 99%

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Tank 10H Saltcake Core Sample Analysis

Martino¹

2004

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SummaryThis report provides details of the characterization of the Tank 10H saltcake samples (HTF-609, 610, and 611) pulled in October 2003. These samples represent the top three 1-foot segments of the saltcake. The following are the major conclusions of this analysis:• The three Tank 10H saltcake samples were filled to nearly their capacity, with an average bulk density of 2.06 g/cm 3 .• The undrained bulk saltcake from the top of the middle sample (HTF-610) had a water content of 12.8 wt %, a 137 Cs activity of 0.94 Ci per gallon of saltcake, an actinide content of 1.3E+6 pCi/g, and a 235 U enrichment of 6.6%. The unique characteristic of HTF-610 was the relatively large amount of sulfate (24 wt %) and carbonate (12 wt %), and the relatively small amount of nitrate (24 wt %).• The undrained bulk saltcake from the bottom of the bottom sample (HTF-611) had a water content of 4.4 wt %, a 137Cs activity of 0.63 Ci per gallon of saltcake, an actinide content of 1.1E+5 pCi/g, and a 235

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Section: Physical Analysissupporting

confidence: 90%

Section: Chemical and Radiological Analysismentioning

confidence: 99%

Section: Permeabilitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Tank 10H Saltcake Core Sample Analysis

Martino¹

2004

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Identification of hepatic peroxisomal phospholipase A₂and characterization of arachidonic acid‐containing choline glycerophospholipids in hepatic peroxisomes

Yang

Han²,

Gross

2003

FEBS Letters

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Recently, a sequence encoding a novel mammalian calcium-independent phospholipase A 2 (iPLA 2 Q Q) was identi¢ed in the human genome and subsequently cloned and expressed in Sf9 insect cells. Unexpectedly, expression studies in recombinant systems demonstrated the usage of multiple translation initiation codons resulting in di¡erent polypeptides. Herein, we demonstrate that hepatic iPLA 2 Q Q is localized to rat liver peroxisomes, possesses a molecular mass of 63 kDa and that peroxisomal membranes are highly enriched in arachidonic acid-containing phospholipids. Collectively, these results provide the ¢rst demonstration of iPLA 2 Q Q in mammalian tissue and suggest the possibility that iPLA 2 Q Q can contribute to lipid second messenger generation by hydrolysis of peroxisomal arachidonic acid-containing phospholipids. ß

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Methods to Avoid Post-Filtration Precipitation in Treatment of High-Level Waste

Russell

Snow

Peterson

2010

Separation Science and Technology

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The Hanford Tank Waste Treatment and Immobilization Plant, currently under construction for treating high level waste at the Hanford Site, will rely on ultrafiltration to provide solids/liquid separation as a core part of the treatment process. A series of bench-scale simulant tests have been performed to evaluate the potential for post-filtration precipitation. These tests focused on identifying precipitation from a range of potential feed compositions and providing the data required to evaluate mitigation options. This data is also important to the Savannah River Site as they are also attempting to dissolve saltcake from their tanks. Inadvertent solids formation after saltcake dissolution, either within a staging tank or in transfer piping can have serious repercussions on the eventual retrieval and transfer of the waste. A series of tests were performed using a variety of simulant samples. These tests identified the expected extent of supersaturation that develops under normal operations and identified and characterized the solids phases that are expected to form when the filtrate solutions are stored. In addition, tests identified the potential to mitigate the formation of these solids through both dilution and the application of increased temperature.

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Tank 41 Salt Dissolution Flowsheet Modeling

Cited by 5 publications

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Tank 10H Saltcake Core Sample Analysis

Tank 10H Saltcake Core Sample Analysis

Identification of hepatic peroxisomal phospholipase A₂and characterization of arachidonic acid‐containing choline glycerophospholipids in hepatic peroxisomes

Methods to Avoid Post-Filtration Precipitation in Treatment of High-Level Waste

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Tank 41 Salt Dissolution Flowsheet Modeling

Cited by 5 publications

References 0 publications

Tank 10H Saltcake Core Sample Analysis

Tank 10H Saltcake Core Sample Analysis

Identification of hepatic peroxisomal phospholipase A2and characterization of arachidonic acid‐containing choline glycerophospholipids in hepatic peroxisomes

Methods to Avoid Post-Filtration Precipitation in Treatment of High-Level Waste

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Identification of hepatic peroxisomal phospholipase A₂and characterization of arachidonic acid‐containing choline glycerophospholipids in hepatic peroxisomes