An isotope dilution–precipitation process for removing radioactive cesium from wastewater

Rogers, Harold; Bowers, J.S.; Gates-Anderson, Dianne

doi:10.1016/j.jhazmat.2012.10.006

Cited by 85 publications

(14 citation statements)

References 24 publications

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“…To date, various methods have been proposed for removal of radiocesium from wastewater, the most main used are solvent extraction, 6,7 chemical precipitation 8 and adsorption method. Among these methods, adsorption has been proved to be an excellent way to treat wastewater, offering signicant advantages, like the low-cost, availability, protability, easy operation, and efficiency.…”

Section: Introductionmentioning

confidence: 99%

Facile synthesis of potassium copper ferrocyanide composite particles for selective cesium removal from wastewater in the batch and continuous processes

et al. 2017

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Section: Introductionmentioning

confidence: 99%

Facile synthesis of potassium copper ferrocyanide composite particles for selective cesium removal from wastewater in the batch and continuous processes

et al. 2017

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“…The standard methods for the task include precipitation, ion‐exchange and extraction, using a range of precipitating and extracting agents. However, as most cesium salts share a high solubility in water, the common precipitation techniques are often ineffective . Consequently, many studies have focused on ion‐exchange procedures based on two main matrices: the first are natural or synthetic zeolites, while the second uses transition metal cyanoferrates (Co, Ni, Cu, Zn) or ammonium phosphomolybdates .…”

Section: Figurementioning

confidence: 99%

“…Yet again, also these methods are far from ideal. Despite the zeolites’ low‐costs and high capacities, they show low‐selectivity towards Cs + ions, while the cyanoferrates are highly selective, but cannot be utilized in ion‐exchange columns . Another approach involves the development of extracting agents with high affinity to Cs + ions.…”

Section: Figurementioning

confidence: 99%

“…[1] Over the last three decades, following the 1986 Chernobyl and the more recent 2011F ukushima nuclear disasters, [2][3][4] much research has been devotedt of indingp ractical ways for the selective 137 Cs-removal from waste and contaminatedw ater.T he standard methods for the task include precipitation,i on-exchange and extraction,u sing ar ange of precipitating ande xtracting [5] agents.H owever,a sm ost cesium salts share ah igh solubility in water,t he common precipitation techniques are often ineffective. [6,7] Consequently,m any studies have focused on ion-exchangep rocedures based on two main matrices:t he first are naturalo rs ynthetic zeolites, [8] while the secondu ses transition metal cyanoferrates (Co, Ni, Cu, Zn) [9][10][11] or ammonium phosphomolybdates. [12] Yeta gain, also these methods are far from ideal.…”

mentioning

confidence: 99%

“…Despite the zeolites' low-costs and high capacities, they show low-selectivity towards Cs + ions, while the cyanoferrates are highly selective, but cannotb eu tilized in ion-ex-changec olumns. [7] Another approach involves the development of extracting agentsw ith high affinity to Cs + ions. The chemicalp rinciple of such reagents rests in their supramolecular features, harnessed for achievingagreater selectivity towardst he target ions.…”

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Selective Binding and Precipitation of Cesium Ions from Aqueous Solutions: A Size‐Driven Supramolecular Reaction

Bengiat

Bogoslavsky

Mandler

et al. 2018

Chemistry A European J

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The nuclear disasters of Chernobyl and Fukushima presented an urgent need for finding solutions to treatment of radioactive wastes. Among the by-products of nuclear fission is radioactive Cs, which evokes an environmental hazard due to its long half-life (>30 years) and high solubility in water. In this work, a water-soluble organic ligand, readily obtained from alloxan and 1,3,5-benzenetriol, has been found to selectively bind and precipitate Cs ions from aqueous solutions. The special rigid structure of the ligand, which consists of a "tripodal" carbonyl base above and below an aromatic plane, contributes to the size-driven selectivity towards the large Cs ions and the formation of a giant, insoluble supramolecular complex. In addition to the low costs of the ligand, high yields and effectiveness in precipitating Cs ions, the Cs-complex revealed a high endurance to continuous doses of γ-radiation, increasing its potential to act as a precipitating agent for Cs.

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Distinctive Interactions of Cesium and Hexaniobate in Water

et al. 2016

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The Cs-effect states Cs + has more covalent character in bonding interactions than the lighter alkalis. It is exploited in organic synthesis and influences behavior in water, most notably radioactive 137 Cs in nuclear wastes or the environment. Niobium polyoxometalates (Nb-POMs) provide a unique opportunity to probe aqueous phase ion-pairing responsible for cesium's solution behavior, because Nb-POMs are most soluble in conditions of maximum ion-association. Moreover, POMs broadly resemble metal-oxide surfaces representative of interfaces found in the environment and industrial processes. Aqueous dissolution calorimetry reveals that CsÀNb-POM exhibits great-er concentration dependence in its endothermic dissolution, compared to the lighter alkali analogues. This phenomenon is attributed to persistent ion-pairs upon dissolution, even in very dilute and otherwise ion-free solutions. While dissociation of these cation-anion interactions in the crystalline lattice is the dominant endothermic step of dissolution, deprotonation of the Nb-POM is the most exothermic. These studies highlight the importance of the competing effects of aqueous ion association and acid-base chemistry that control solubility of compounds from simple oxoanions to metal-oxo clusters to supramolecular assemblies to solid metal oxides.

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An isotope dilution–precipitation process for removing radioactive cesium from wastewater

Cited by 85 publications

References 24 publications

Facile synthesis of potassium copper ferrocyanide composite particles for selective cesium removal from wastewater in the batch and continuous processes

Facile synthesis of potassium copper ferrocyanide composite particles for selective cesium removal from wastewater in the batch and continuous processes

Selective Binding and Precipitation of Cesium Ions from Aqueous Solutions: A Size‐Driven Supramolecular Reaction

Distinctive Interactions of Cesium and Hexaniobate in Water

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