Particle size of particulate matter in the dissolver off-gas stream

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This report discusses particle size measurements with a modified cascade impactor of the particulate matter in the dissolver off-gases during the period of maximum gas evolution, and during the air sparge of the dissolver solution after the completion of the dissolving cycle which indicate that the mass-size median of the particles was less than 0.1 micron in both cases. The measurements were made, unfortunately, at a time when the efficiency of the silver reactor upstream to the sampling point was low enough to permit appreciable amounts of iodine through to the cascade impactor. The samples were therefore permitted to decay … continued below

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6 p.

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Weidenbaum, B. November 1, 1951.

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This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by the UNT Libraries Government Documents Department to the UNT Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 45 times. More information about this report can be viewed below.

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  • Hanford Works
    Publisher Info: Hanford Works, Richland, WA (United States)
    Place of Publication: Richland, Washington

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Description

This report discusses particle size measurements with a modified cascade impactor of the particulate matter in the dissolver off-gases during the period of maximum gas evolution, and during the air sparge of the dissolver solution after the completion of the dissolving cycle which indicate that the mass-size median of the particles was less than 0.1 micron in both cases. The measurements were made, unfortunately, at a time when the efficiency of the silver reactor upstream to the sampling point was low enough to permit appreciable amounts of iodine through to the cascade impactor. The samples were therefore permitted to decay for thirty-five days before the relative amounts of radioactivity on the stages of the impactor and the follow- up filter paper were evaluated. The size of the particles obtained, 0.1 micron, should be considered primarily as an order of magnitude rather than an absolute value, because the cascade impactor (as well as any other impaction device) can not give an accurate value for the particle size in this size range.

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6 p.

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OSTI as DE94009742

PBD: 1 Nov 1951

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Office of Scientific & Technical Information Technical Reports

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  • November 1, 1951

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  • Nov. 3, 2018, 11:47 a.m.

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  • Jan. 5, 2026, 2:01 p.m.

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Weidenbaum, B. Particle size of particulate matter in the dissolver off-gas stream, report, November 1, 1951; Richland, Washington. (https://digital.library.unt.edu/ark:/67531/metadc1316371/: accessed April 19, 2026), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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