Accurate measurement of uranium and thorium in naturally occurring radioactive materials to overcome complex matrix interference

Lee, Ju Hyun; Yi, Sung Chul

doi:10.1016/j.apradiso.2023.110649

Cited by 2 publications

(1 citation statement)

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“…The concentration process that is often followed and technologically supported is the pre-concentration of thorium [ 137 , 138 , 139 ].…”

Section: Thorium Separation And/or Pre-concentrationmentioning

confidence: 99%

Thorium Removal, Recovery and Recycling: A Membrane Challenge for Urban Mining

Man,

Albu,

Nechifor

et al. 2023

Membranes

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Although only a slightly radioactive element, thorium is considered extremely toxic because its various species, which reach the environment, can constitute an important problem for the health of the population. The present paper aims to expand the possibilities of using membrane processes in the removal, recovery and recycling of thorium from industrial residues reaching municipal waste-processing platforms. The paper includes a short introduction on the interest shown in this element, a weak radioactive metal, followed by highlighting some common (domestic) uses. In a distinct but concise section, the bio-medical impact of thorium is presented. The classic technologies for obtaining thorium are concentrated in a single schema, and the speciation of thorium is presented with an emphasis on the formation of hydroxo-complexes and complexes with common organic reagents. The determination of thorium is highlighted on the basis of its radioactivity, but especially through methods that call for extraction followed by an established electrochemical, spectral or chromatographic method. Membrane processes are presented based on the electrochemical potential difference, including barro-membrane processes, electrodialysis, liquid membranes and hybrid processes. A separate sub-chapter is devoted to proposals and recommendations for the use of membranes in order to achieve some progress in urban mining for the valorization of thorium.

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“…The concentration process that is often followed and technologically supported is the pre-concentration of thorium [ 137 , 138 , 139 ].…”

Section: Thorium Separation And/or Pre-concentrationmentioning

confidence: 99%