Systematic study of the solvent extraction of metal β-diketonates

Starý, J.; Hladky, E.

doi:10.1016/s0003-2670(00)87224-4

Cited by 149 publications

(21 citation statements)

References 9 publications

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“…Previous studies of solvent extraction systems, using organic solvents such as benzene and carbon tetrachloride and chelating agents such as acetylacetone, have found that Cd 2þ is minimally extracted in benzene and carbon tetrachloride with acetylacetone, but up to 80% Pb 2þ is extracted in benzene from alkaline aqueous solutions (32,33). The fact that adsorption of metal ions on MCM-41 takes place within a relatively short time is one of the advantages of this method.…”

Section: Adsorption Behavior For Cadmium(ii) and Lead(ii) On Mcm-41mentioning

confidence: 99%

Adsorption Behavior of Cadmium(II) and Lead(II) on Mesoporous Silicate MCM‐41

Oshima

Perera

Northcott

et al. 2006

Separation Science and Technology

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This investigation examines metal ion adsorption on mesoporous silicate, MCM-41, synthesized from sodium silicate solution and cethyltrimethylammonium bromide (CTAB). MCM-41 has potential as an adsorbent material, with a regular hexagonal pore structure, large specific surface area, and large pore volume. The MCM-41 synthesized for this investigation is characterized using powder X-ray 1635 diffraction and nitrogen adsorption and desorption isotherms data. The adsorption behavior for cadmium(II) and lead(II) onto MCM-41 was studied by contacting the mesoporous silicate with an aqueous solution of metal salts and acetylacetone. Both Cd 2þ and Pb 2þ were found to quantitatively adsorb onto MCM-41. The results of this study suggest that MCM-41 may have applications in the recovery of toxic metals from waste waters.

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Section: Adsorption Behavior For Cadmium(ii) and Lead(ii) On Mcm-41mentioning

confidence: 99%

Adsorption Behavior of Cadmium(II) and Lead(II) on Mesoporous Silicate MCM‐41

Oshima

Perera

Northcott

et al. 2006

Separation Science and Technology

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“…It is also important that the organic reagent should preserve the integrity of the nano zirconia during the extractive desorption of 68 Ga ions. Gallium (III) is readily extracted by oxygen containing organic solvents (16).The reagent, acetylacetone, well known to the analyst for the solvent extraction of Ga(III) (17)(18)(19)(20) was used in this investigation. In order to reduce the Table 1.…”

Section: Elution Efficiencymentioning

confidence: 99%

Development of a⁶⁸Ge/⁶⁸Ga Generator to Avail⁶⁸Ga in Organic Medium for Industrial Radiotracer Applications

Chakravarty¹,

Ram²,

Venkatesh³

et al. 2012

Separation Science and Technology

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A chromatographic 68 Ge/ 68 Ga generator using nano zirconia as the sorbent matrix was developed to avail 68 Ga in an organic medium for industrial radiotracer applications. Acetylacetone was used as the eluent for the extractive desorption of 68 Ga ions from the sorbent phase. The effect of varying the amount of acetylacetone on 68 Ga yield and achieving ideal experimental conditions were studied. The major advantage of this generator is its ability to deliver ready to use ''industrial 68 Ga tracer'' with > 90% yield and high radionuclidic and radiochemical purity. The performance of the generator remained consistent on repeated elutions over a period of 1 year.

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“…Since few of the reagents are specific, the primary consideration is to improve the selectivity for the desired element. The optimum conditions can be derived from the equation for the extraction process: n(HA) o r g (12) The extraction constant ^e x t , is given by (13) *The notation is intended to emphasize that the concentration c expressed in moles B" 1 must be divided by moles fi" 4 where c H A is the original concentration of HA in the organic phase. In these conditions the total amount of complexed metal is given by C HA x oig' w h e r e ^orgis the volume of solvent, and the total amount of the metal left unreacted in the aqueous phase, [M n+ ] F a q ) is given by…”

Section: B Solvent Extraction Of Metal Chelatesmentioning

confidence: 99%