Note on the uranyl complexes of EDTA

Lurdes, María de

doi:10.1016/0039-9140(83)80015-0

Cited by 6 publications

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“…(3) The ionic radii are more suitable and the extent of the functional group participation in metal ion complexation is better for U(VI) to form a complex with ligands; therefore U(VI) could form a more stable complex with iminodiacetic acid derivatives than Ca 2+ , Mg 2+ , Sr 2+ and Ba 2+ . 57 The result is consistent with the stability constant of the metal ions-iminodiacetic acid derivatives complex in the literature [58][59][60][61]…”

Section: Samplessupporting

confidence: 89%

Removal of uranium(vi) from aqueous solution using iminodiacetic acid derivative functionalized SBA-15 as adsorbents

et al. 2014

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Three different functional SBA-15 were prepared by a post-grafting method using three iminodiacetic acid derivatives of ethylenediaminetriacetic acid (ED3A), diethylenetriaminetetraacetic acid (DT4A), and 1,2-cyclohexylenedinitrilotriacetic acid (CyD3A), which were used as adsorbents for removal of uranium(vi) from aqueous solution. These materials were characterized by FT-IR, NMR, TEM, nitrogen adsorption/desorption experiments, and elemental analysis. The effect of pH, ionic strength, contact time, solid-liquid ratio, initial metal ion concentration, temperature, and coexisting ions on uranium(vi) sorption behaviors of the functionalized SBA-15 was studied. Typical sorption isotherms (Langmuir and Freundlich) were determined for the sorption process, and the maximum sorption capacity was calculated. The influence of functional groups on uranium(vi) sorption was also discussed. As a result, compared with other current U(vi) sorbents (granite, kaolin, attapulgite), SBA-15-1,2-cyclohexylenedinitrilotriacetic acid (SBA-15-CyD3A) possessed good selective sorption properties, which had potential application in separation of uranium(vi).

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Section: Samplessupporting

confidence: 89%