Actinide-Aluminate Speciation in Alkaline Radioactive Waste

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Investigation of behavior of actinides in alkaline media containing AL(III) showed that no aluminate complexes of actinides in oxidation states (IIII-VIII) were formed in alkaline solutions. At alkaline precipitation IPH (10-14) of actinides in presence of AL(III) formation of aluminate compounds is not observed. However, in precipitates contained actinides (IIV)<(VI), and to a lesser degree actinides (III), some interference of components takes place that is reflected in change of solid phase properties in comparison with pure components or their mechanical mixture. The interference decreases with rise of precipitation PH and at PH 14 is exhibited very feebly. In the case ... continued below

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Clark, Dr. David L. & Fedosseev, Dr. Alexander M. December 21, 2001.

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Description

Investigation of behavior of actinides in alkaline media containing AL(III) showed that no aluminate complexes of actinides in oxidation states (IIII-VIII) were formed in alkaline solutions. At alkaline precipitation IPH (10-14) of actinides in presence of AL(III) formation of aluminate compounds is not observed. However, in precipitates contained actinides (IIV)<(VI), and to a lesser degree actinides (III), some interference of components takes place that is reflected in change of solid phase properties in comparison with pure components or their mechanical mixture. The interference decreases with rise of precipitation PH and at PH 14 is exhibited very feebly. In the case of NP(VII) the individual compound with AL(III) is obtained, however it is not aluminate of neptunium(VII), but neptunate of aluminium(III) similar to neptunates of other metals obtained earlier.

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INIS; OSTI as DE00791358

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  • Other Information: PBD: 21 Dec 2001

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  • Report No.: DOE/ER14940
  • Grant Number: FG07-98ER14940
  • DOI: 10.2172/791358 | External Link
  • Office of Scientific & Technical Information Report Number: 791358
  • Archival Resource Key: ark:/67531/metadc739846

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  • December 21, 2001

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  • Oct. 19, 2015, 7:39 p.m.

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  • Dec. 16, 2016, 4:28 p.m.

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Clark, Dr. David L. & Fedosseev, Dr. Alexander M. Actinide-Aluminate Speciation in Alkaline Radioactive Waste, report, December 21, 2001; United States. (digital.library.unt.edu/ark:/67531/metadc739846/: accessed September 24, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.