1998
DOI: 10.1007/bf02389462
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Removal of226Ra(II) from uranium mining and processing effluents

Abstract: A comparative study is presented on decontamination of the solutions containing 226Ra(II), by applying coprecipitation of Ba(Ra)SO 4 followed by flotation and selective adsorption on active carbon. The comparative study revealed the performances of separation by coprecipitation-flotation and the possibility of applying the selective adsorption on active carbon. Both methods ensure the decreasing of 226Ra(II) concentration under the allowed limits, recommended by International Standards.

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Cited by 8 publications
(6 citation statements)
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“…They are stabilized by surfactant layers adsorbed at the liquid/air interfaces. Foams are used in a wide range of applications such as water treatment (1) or decontamination (2)(3)(4), where their low liquid volume fraction is advantageous as it enables to reduce the volumes of liquid to be cleaned or recycled. In these processes and in flotation (5)(6)(7)(8)(9)(10)(11)(12), species such as ions (5,6), minerals (7)(8)(9) or radioactive elements (2)(3)(4) adsorb and concentrate at the surface of bubbles, and can then be collected easily as they float atop the aqueous solution.…”
Section: Introductionmentioning
confidence: 99%
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“…They are stabilized by surfactant layers adsorbed at the liquid/air interfaces. Foams are used in a wide range of applications such as water treatment (1) or decontamination (2)(3)(4), where their low liquid volume fraction is advantageous as it enables to reduce the volumes of liquid to be cleaned or recycled. In these processes and in flotation (5)(6)(7)(8)(9)(10)(11)(12), species such as ions (5,6), minerals (7)(8)(9) or radioactive elements (2)(3)(4) adsorb and concentrate at the surface of bubbles, and can then be collected easily as they float atop the aqueous solution.…”
Section: Introductionmentioning
confidence: 99%
“…Foams are used in a wide range of applications such as water treatment (1) or decontamination (2)(3)(4), where their low liquid volume fraction is advantageous as it enables to reduce the volumes of liquid to be cleaned or recycled. In these processes and in flotation (5)(6)(7)(8)(9)(10)(11)(12), species such as ions (5,6), minerals (7)(8)(9) or radioactive elements (2)(3)(4) adsorb and concentrate at the surface of bubbles, and can then be collected easily as they float atop the aqueous solution. Foams can also be used as chemical reactors for reactions where one of the reactants is a gas, for example for hydrogenation using H 2 or oxidation by O 2 (13)(14)(15).…”
Section: Introductionmentioning
confidence: 99%
“…To handle of issues, the integrating system of clarifier using the other system as well as dissolved air flotation (DAF) making appropriate to use in mobile water treatment. DAF systems are technologies in the recent year that has been explored due to accelerating the separation of contaminants, hydrocarbons, minerals, algae, radionuclides, and thickening of activated sludge, among others [6][7][8][9][10]. The separation can be done since the surface interaction between the bubbles and particles and hydrodynamic phenomena [11].…”
Section: Introductionmentioning
confidence: 99%
“…Aqueous foams are used in environmentally relevant applications for wastewater treatment 14 or nuclear waste retreatment. 15,16 These applications rely on flotation, a process which promotes the concentration of impurities at the surface of bubbles and in the liquid films and channels connecting the bubbles, which can then be collected easily as they float at the top of the water sample. The nature of the species that can be concentrated in foams is multiple: ions, 17,18 ores, 19 minerals, 20,21 or proteins.…”
Section: ■ Introductionmentioning
confidence: 99%
“…Aqueous foams are used in environmentally relevant applications for wastewater treatment or nuclear waste retreatment. , These applications rely on flotation, a process which promotes the concentration of impurities at the surface of bubbles and in the liquid films and channels connecting the bubbles, which can then be collected easily as they float at the top of the water sample. The nature of the species that can be concentrated in foams is multiple: ions, , ores, minerals, , or proteins. , A major advantage of foams is that they contain, by definition, between 74 and 99% of air and consequently very little volume of liquid; hence, they are good candidates for a reduction of effluent volumes during these processes .…”
Section: Introductionmentioning
confidence: 99%