Removal of radioiodine from liquid effluents

Sinha, Pradeep K.; Lal, K. B.; Ahmed, Jaleel

doi:10.1016/s0956-053x(97)00034-2

Cited by 26 publications

(13 citation statements)

References 2 publications

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“…These are, for example, membrane separation [11], adsorption [12][13][14][15], precipitation [16], or ion exchange [17,18]. Several organic and inorganic, natural and artifcial sorbents were found to remove radioactive I − from the environment, for example: activated carbon [19]; metal oxides [20]; natural organic materials [21]; composite absorbents [22]; zeolite [23]; inorganic anion exchanger [24]. Lettinga et al [25] reported that activated carbon removes 131 I with low efficiency.…”

Section: Introductionmentioning

confidence: 99%

Use of silver–bentonite in sorption of chloride and iodide ions

Buzetzky

Nagy

Kónya

2020

J Radioanal Nucl Chem

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Ag–bentonite was prepared by ion exchange process to sorb iodide and chloride ions in batch experiments. The modified bentonite was examined with XRF and XRD. 75% of the cation exchange capacity was exchanged by silver ions. It was found that the sorption of chloride ions is an exothermic precipitation process because the solubility decreases with increasing temperature. In the case of iodide sorption, the dissolution of AgI was observed under high concentration of non-radioactive iodide ions, which is well known in analytical chemistry. The phenomenon occurs not only in the bulk aqueous phase but also in the interlayer space of montmorillonite.

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Section: Introductionmentioning

confidence: 99%

Use of silver–bentonite in sorption of chloride and iodide ions

Buzetzky

Nagy

Kónya

2020

J Radioanal Nucl Chem

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“…zeolite and alumina), activated carbons, activated carbon fibers, and anion-exchange resins, have been evaluated for use in removal of iodide from the aqueous phase [8,9]. Organic resins have been applied to remove anionic species from radioactive wastewaters.…”

Section: Introductionmentioning

confidence: 99%

Preparation, characterization, and iodide sorption performance of silver-loaded mesoporous MCM-41

Karkhanei

Sepehrian

Cheraghali

2014

Desalination and Water Treatment

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A B S T R A C TMesoporous MCM-41 has been modified by incipient wetness impregnation with silver atoms as a new sorbent for iodide. The Ag-modified mesoporous MCM-41 (Ag-MCM-41) was characterized using X-ray diffraction, surface area, pore volume and pore size analyzer, and scanning electron microscopy/energy dispersive spectroscopy techniques, and its sorption behavior for iodide was studied. The effects of pH, contact time, temperature, initial concentration of iodide, and competing anions such as chloride and fluoride were investigated by batch method. The sorption capacity was very high in the pH range of 1.0-3.0. The kinetic analysis revealed that the overall sorption process was fitted with the pseudosecond-order kinetic model. The experimental sorption isotherm is also successfully described by Langmuir and Freundlich models. The maximum sorption capacity of iodide onto Ag-MCM-41 was found to be 238.1 mg g −1 .

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“…and Lemna minor as adsorbents [10]. Activated carbon was also used for the adsorption of radionuclides in aqueous medium such as uranium [11] and iodine [12].…”

Section: Introductionmentioning

confidence: 99%