ChemInform Abstract: HYDROUS TITANIUM OXIDE AS A CONCENTRATOR FOR TRACE NUCLIDES IN SEAWATER

Doshi, G.R.; Sastry, V.N.

doi:10.1002/chin.197813023

Cited by 1 publication

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“…As an example, the immobilization of long-lived 137 Cs (30.17 years half-life) produced by nuclear fission of uranium-235 can be considered. As is shown by Doshi [6], 137 Cs is effectively adsorbed from water onto hydrated titanium dioxide: the distribution coefficient between the liquid and solid phases is 178. Venkataramani [7] has found that sorption of 137 Cs on hydrated titanium dioxide becomes noticeable at pH 4 and increases significantly upon transfer to alkaline medium-at pH 10 sorption is more than 10 times higher than at pH 4.…”

Section: Introductionmentioning

confidence: 87%

“…Bignon [1] only studied the composition of film and not its contamination with radionuclides. Some authors [6][7][8][9][10][11] studied sorption of cobalt and caesium radionuclides but either freshly precipitated hydrated titanium dioxide or nanocomposites from hydrated and non-hydrated titanium dioxide were used as sorbents. At the same time, freshly precipitated hydrated titanium dioxide has a large specific surface area (ca.…”

Section: Introductionmentioning

confidence: 99%

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Sorption of 137Cs and 60Co on Titanium Oxide Films in Light Water Reactor Primary Circuit Environment

et al. 2022

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This paper discusses the processes of the long-lived 137Cs and 60Co immobilization on titanium surfaces in simulated light water reactor primary circuit environments. This study is prompted by numerous problems in both the maintenance of equipment during reactor operation and the dismantling of the reactor after the completion of the operation, which is associated with contamination of working surfaces with long-lived radionuclides. The composition of the oxide films formed on the surface of commercial titanium alloy ПT-3B has been studied with specimens prepared in autoclave test conditions and surface samples from the pipeline sections to which the primary coolant was applied. These films on the coolant pipeline surface consist of a titanium dioxide layer tightly adhered to the pipeline metal surface and weakly fixed deposits—crystallites comprised of titanium oxides and other corrosion products (oxides and hydrated oxides of iron, nickel, chromium etc.). The radionuclide composition of the samples was studied by gamma-spectrometry. It is shown that the mechanism of titanium-surface contamination with 137Cs is by physisorption, contamination level increases upon the presence of dispersed particles. For 60Co, both sorption and deposition onto surfaces are observed.

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Section: Introductionmentioning

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Sorption of 137Cs and 60Co on Titanium Oxide Films in Light Water Reactor Primary Circuit Environment

et al. 2022

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ChemInform Abstract: HYDROUS TITANIUM OXIDE AS A CONCENTRATOR FOR TRACE NUCLIDES IN SEAWATER

Abstract: Das Adsorptionsverhalten von 14 im Meerwasser gelösten Radionucliden an hydratisiertem Ti‐oxid wird im pH‐Bereich 0‐8 untersucht.

Cited by 1 publication

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Sorption of 137Cs and 60Co on Titanium Oxide Films in Light Water Reactor Primary Circuit Environment

Sorption of 137Cs and 60Co on Titanium Oxide Films in Light Water Reactor Primary Circuit Environment

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