The use of flotation in the purification of radioactive effluents

Voznesenskii, S.A.; Sereda, G. A.; Baskov, L. I.; Tkachenko, E.V.; Bagretsov, V.F.

doi:10.1007/bf01709199

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Recently Reported Adsubble Separations1

Foam Separations1

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1966

1968

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Cited by 2 publications

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“…The flotation of nickel (96a), palladium (96b), and certain organic precipitates (106) without the aid of a surfactant collector per se was reported. An impressive array of radioactive isotopes has been separated by means of suitable precipitate carriers (such as iron hydroxide) which were then foamed off with appropriate collectors (24,108,109,110,144).…”

Section: Recently Reported Adsubble Separationsmentioning

confidence: 99%

ADSORPTIVE BUBBLE SEPARATION METHODS—Foam Fractionation and Allied Techniques

Lemlich¹

1968

Ind. Eng. Chem.

178

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Section: Recently Reported Adsubble Separationsmentioning

confidence: 99%

ADSORPTIVE BUBBLE SEPARATION METHODS—Foam Fractionation and Allied Techniques

Lemlich¹

1968

Ind. Eng. Chem.

178

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“…Two Russian applications of what appear to be precipitate flotation, although flow-rate data are not given, have been reported. Voznesenskii et al (23) used precipitated iron(II1) to adsorb radioactive isotopes, which were floated using naphthalenesulfonic acid as the collector. Voznesenskii et al (23) used precipitated iron(II1) to adsorb radioactive isotopes, which were floated using naphthalenesulfonic acid as the collector.…”

Section: Foam Separationsmentioning

confidence: 99%

Comparison of Variables in Ion and Precipitate Flotation

Rubin¹,

Johnson²,

Lamb³

1966

Ind. Eng. Chem. Proc. Des. Dev.

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cipally to obtain the fastest dissolution, but also because a precipitate of A1F3 is much easier to redissolve than a precipitate of ZrF4. Fortunately, the rate of approach to conditions that form a precipitate of ZrF4 decreases as fluoride is consumed, so that the formation of ZrF4 is unlikely. The composition of the final dissolver solution is sufficiently stable if processed immediately. Zirconium and aluminum may gradually precipitate over a period of several weeks, making it necessary to centrifuge out the solids prior to solvent extraction if the process is delayed (3, 6, 7, 7 7 ) . No further adjustment in salting strength is required prior to solvent extraction. The zirconium fuel element dissolved faster in this test than in the laboratory because of a larger surface-to-weight ratio.The elements were dissolved a t 70' C. in 24 hours, including an 8to 9-hour period during which the solution was penetrating the oxide layer. The rate of corrosion of the Type 304L stainless steel averaged 10 to 15 mils per year in the liquid phase and <1 mil per year in the vapor phase. I n summary, the Alniflex process was shown to be an acceptable process for dissolving zirconium-uranium alloys in Type 304L stainless steel dissolvers.

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The use of flotation in the purification of radioactive effluents

Cited by 2 publications

References 1 publication

ADSORPTIVE BUBBLE SEPARATION METHODS—Foam Fractionation and Allied Techniques

ADSORPTIVE BUBBLE SEPARATION METHODS—Foam Fractionation and Allied Techniques

Comparison of Variables in Ion and Precipitate Flotation

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