Metal-selective sorbents

Fuks, L.; Herdzik-Koniecko, Irena

doi:10.1016/b978-0-12-816906-3.00007-8

Cited by 2 publications

(1 citation statement)

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“…The aforenamed radionuclides weakly attach to most minerals and sorbents and are strongly mobile with different aqueous streams. The sorption of differently charged metal cations has been broadly studied [ 43 ]. However, much less data are available for the sorption of the metallic anions.…”

Section: Resultsmentioning

confidence: 99%

Fly Ash as a Potential Adsorbent for Removing Radionuclides from Aqueous Solutions in an Adsorption-Membrane Assisted Process Compared to Batch Adsorption

et al. 2023

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The paper deals with checking the possibility of using fly ash (FA) as a sorbent in the batch adsorption method of removing radionuclides from aqueous solutions. An adsorption-membrane filtration (AMF) hybrid process with a polyether sulfone ultrafiltration membrane with a pore size of 0.22 μm was also tested as an alternative to the commonly used column-mode technology. In the AMF method, metal ions are bound by the water-insoluble species prior to the membrane filtration of the purified water. Thanks to the easy separation of the metal-loaded sorbent, it is possible to improve water purification parameters using compact installations and reduce operating costs. This work evaluated the influence of such parameters on cationic radionuclide removal efficiency (EM): initial pH and composition of the solution, contact time of the phases, and the FA doses. A method for removing radionuclides, ordinarily present in an anionic form (e.g., TcO4−), from water, has also been presented. The results show, that both batch adsorption of radionuclides and adsorption-membrane filtration (AMF) using the FA as an adsorbent can be effectively used for water purification and in the form of a solid directed to long-term storage.

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Section: Resultsmentioning

confidence: 99%