Uptake of Iodine and Bromine by Ion-Exchange Resins in Aqueous Solution

Sanemasa, Isao; Yoshida, Michiko; Abe, Asami

doi:10.2116/analsci.24.921

Cited by 9 publications

(5 citation statements)

References 9 publications

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“…However, because of a REDOX reaction between Cu 2+ and I − , the more hydrophobic I 3 − anion was formed in-situ. This species is known to interact weakly with organic adsorbents by partitioning [24,60]. This is problematic for the stability of final wasteforms (Fig.…”

Section: Ion-exchange Resinsmentioning

confidence: 99%

Capture of aqueous radioiodine species by metallated adsorbents from wastestreams of the nuclear power industry: a review

et al. 2021

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Iodine-129 poses a significant challenge in the drive towards lowering radionuclide emissions from used nuclear fuel recycling operations. Various techniques are employed for capture of gaseous iodine species, but it is also present, mainly as iodide anions, in problematic residual aqueous wastestreams, which have stimulated research interest in technologies for adsorption and retention of the radioiodine. This removal effort requires specialised adsorbents, which use soft metals to create selectivity in the challenging chemical conditions. A review of the literature, at laboratory scale, reveals a number of organic, inorganic and hybrid adsorbent matrices have been investigated for this purpose. They are functionalised principally by Ag metal, but also Bi, Cu and Pb, using numerous synthetic strategies. The iodide capacity of the adsorbents varies from 13 to 430 mg g−1, with ion-exchange resins and titanates displaying the highest maximum uptakes. Kinetics of adsorption are often slow, requiring several days to reach equilibrium, although some ligated metal ion and metal nanoparticle systems can equilibrate in < 1 h. Ag-loaded materials generally exhibit superior selectivity for iodide verses other common anions, but more consideration is required of how these materials would function successfully in industrial operation; specifically their performance in dynamic column experiments and stability of the bound radioiodine in the conversion to final wasteform and subsequent geological storage. Article highlights Metallated adsorbents for the capture and retention of radioiodine in the nuclear industry are assessed. The strengths and weaknesses of organic, inorganic and hybrid support matrices and loading mechanisms are discussed. Pathways for progression of this technology are proposed. Graphic abstract

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Section: Ion-exchange Resinsmentioning

confidence: 99%

Capture of aqueous radioiodine species by metallated adsorbents from wastestreams of the nuclear power industry: a review

et al. 2021

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“…8,9 Each of the other methods has certain advantages, relatively speaking, among them the gaseous membrane method and the ion exchange resin method show more commercial application prospects, but their inherent defects have resulted in not one successful instance of an industrial production process employing either of the two methods so far. [10][11][12][13] It can be predicted that the fully mature air blow-out method will be gradually replaced by the new extracting bromine method with the advantages of energysaving and low consumption. The low bromine content and other ions coexisting with bromine in seawater set higher requirements for the extraction of bromine from seawater.…”

Section: Introductionmentioning

confidence: 99%

Adsorption performance for bromine ion using bromide ion–lanthanum nitrate modified chitosan imprinted polymer

Qiu

2014

Anal. Methods

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“…The Br-ISE was calibrated in the KBr (10 −6 -10 −1 M) solutions that were prepared in deionized water for 200 s. The effect of the pH value of the solution on the Br-ISE response potential was studied by calibrating the potential of Br-ISE in 10 −3 M KBr solutions with different pH values (2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13).…”

Section: Characterizationmentioning

confidence: 99%

“…About 99% of bromine in the earth exists in the form of Br − in seawater [2], so bromine is also called "a marine element". The concentration of bromide needs to be determined during the extraction process of bromine from seawater, such as the air blowing method [3], ion exchange resin method [4], and steam distillation method [5]. China produces the third highest amount of bromine in the world, with air blowing being the most widely used in method.…”

Section: Introductionmentioning

confidence: 99%

Doped PANI Coated Nano-Ag Electrode for Rapid In-Situ Detection of Bromide in Seawater

Wang

Zhou

et al. 2019

Coatings

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In this paper, we successfully fabricated a novel bromide ion selective electrode (Br-ISE), which was coated by bromine ion doped polyaniline as sensitive film. Using Ag wire as the substrate, a uniform and dense nano-silver layer was electroplated to enhance the specific surface area of the electrode. Subsequently, a polyaniline (PANI) film was coated onto the electrode by cyclic voltammetry in a 0.3 M aniline and 1 M HCl solution and was in-situ doped by 0.1 M KBr solution. The morphology and performance of the electrode were characterized by scanning electron microscopy (SEM), electrochemical impedance spectroscopy (EIS), and other electrochemical analysis methods, respectively. The prepared Br-ISE exhibited a wide linear dynamic range between 1.0 × 10−1 and 1.0 × 10−7 M with a near-Nernst slope of 57.33 mV/decade. In addition, the electrode possessed extremely fast response time (<1 s) and low impedance (300 Ω), high sensitivity, and good selectivity. The electrode potential drifted within 2 mV in 8 h. The lifespan was larger than three months.

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Uptake of Iodine and Bromine by Ion-Exchange Resins in Aqueous Solution

Abstract: We recently studied the uptake of alkanes and alcohols,

Cited by 9 publications

References 9 publications

Capture of aqueous radioiodine species by metallated adsorbents from wastestreams of the nuclear power industry: a review

Capture of aqueous radioiodine species by metallated adsorbents from wastestreams of the nuclear power industry: a review

Adsorption performance for bromine ion using bromide ion–lanthanum nitrate modified chitosan imprinted polymer

Doped PANI Coated Nano-Ag Electrode for Rapid In-Situ Detection of Bromide in Seawater

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