Scavenging of UO22+ using 4-sulfonic calix[6]arene in the presence of goethite

J. Jung; Y. H. Cho; P. S. Hahn

doi:10.1007/BF02347373

Scavenging of UO₂²⁺ using 4-sulfonic calix[6]arene in the presence of goethite

J. Jung, Y. H. Cho, P. S. Hahn

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

The scavenging of UO₂²⁺ using 4-sulfonic calix[6]arene in the presence of a strong adsorbent was studied as a function of pH. The adsorbent selected was goethite because of its strong affinity for UO₂²⁺ and its abundance in natural soils. In order to understand the underlying chemistry of the scavenging process, the adsorption of UO₂²⁺ and 4-sulfonic calix[6]arene onto goethite, respectively, and the extraction of adsorbed UO₂²⁺ from goethite surface were modeled using the triple-layer model. The model well explained the pH dependence of the adsorption and extraction processes. This work showed that maximum extraction was obtained around pH 10.5 in the presence of 12 g/l goethite in the case of a 1:3 T_U(VI):T_calixarene ratio.

Original language	English
Pages (from-to)	635-639
Number of pages	5
Journal	Journal of Radioanalytical and Nuclear Chemistry
Volume	242
Issue number	3
DOIs	https://doi.org/10.1007/BF02347373
Publication status	Published - 1999
Externally published	Yes

ASJC Scopus subject areas

Analytical Chemistry
Nuclear Energy and Engineering
Radiology Nuclear Medicine and imaging
Pollution
Spectroscopy
Public Health, Environmental and Occupational Health
Health, Toxicology and Mutagenesis

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1007/BF02347373

Cite this

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abstract = "The scavenging of UO22+ using 4-sulfonic calix[6]arene in the presence of a strong adsorbent was studied as a function of pH. The adsorbent selected was goethite because of its strong affinity for UO22+ and its abundance in natural soils. In order to understand the underlying chemistry of the scavenging process, the adsorption of UO22+ and 4-sulfonic calix[6]arene onto goethite, respectively, and the extraction of adsorbed UO22+ from goethite surface were modeled using the triple-layer model. The model well explained the pH dependence of the adsorption and extraction processes. This work showed that maximum extraction was obtained around pH 10.5 in the presence of 12 g/l goethite in the case of a 1:3 TU(VI):Tcalixarene ratio.",

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