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Cited by 32Extraction and Separation ProcessesRadioactive element chemistry and processingAnalytical chemistry methods development

The DOI matches its Crossref record; 18 of the 18 references it cites were found in a registry or an index.

Liquid-Liquid Extraction of Tetravalent Zirconium from Acidic Chloride Solutions Using Cyanex 272

Reddy, B. Ramachandra, Kumar, J. Rajesh, Reddy, A. Varada·2004·Analytical Sciences
DOI 10.2116/analsci.20.501
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Abstract

The liquid-liquid extraction of zirconium(IV) from acidic chloride solutions was carried out with Cyanex 272 as an extractant diluted in kerosene. An increase of the acid concentration decreased the percentage extraction of metal, which indicates that the extraction follows ion exchange-type mechanism: MO2+(aq) + 2(HA)2(org) <--> MO (HA2)2(org) + 2H+(aq), where, M = Zr(IV); HA = Cyanex 272. The extraction of Zr(IV) increases with an increase of the extractant concentration. In a plot of log D vs. log[extractant], M is linear with a slope of approximately 2, indicating the association of two moles of extractant with the extracted metal species. On the other hand, the extraction decreases with an increase of the H+ ion concentration. A plot of log D vs. log[H+] gave a straight line with a negative slope of 1.7, indicating the exchange of two moles of hydrogen ions for every mole of Zr(IV). The effect of the Cl- ion concentration at a constant concentration of [H+] did not show any change in the D values. The addition of sodium salts enhanced the percentage extraction of metal, and followed the order of NaSCN > NaNO3 > Na2SO4 > NaCl. The stripping of metal from the loaded organic (L.O) with different acids indicated sulfuric acid to be the best stripping agent. An increase of the temperature during the extraction and stripping stages increases the metal transfer, showing that the process is exothermic. The synergism, regeneration and recycling capacity of Cyanex 272; the extraction behavior of associated elements, such as Hf(IV), Ti(IV), Al(III), Fe(III); and IR spectra of the extracted Zr-Cyanex 272 complex were studied.

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Research works printed but not linked: 9

  1. G. F. Egorov, V. V. Fomin, Yu. G. Frolov, and G. A. Yagodin, Zhur. Neog. Khim., 1960, 5, 1044.
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  8. B. R. Reddy and P. V. R. Bhaskara Sarma, Miner. Metall. Process., 2001, 18(3), 172.
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Metadata

Authors
Reddy, B. R., Kumar, J. R., & Reddy, A. V.
Affiliations
  • Indian Institute of Chemical Technology (IN)
  • Sri Venkateswara University (IN)
Corresponding author
Reddy, B. Ramachandra
Venue
Analytical Sciences
Publisher
Springer Science and Business Media LLC
Published
2004-03
Volume
20
Issue
3
Pages
501-505
ISSN
  • 0910-6340 (ISSN-L)
  • 1348-2246
DOI
10.2116/analsci.20.501
OpenAlex
W1987156410
Cited by
32
References
18
Citations by year
2026: 2 · 2022: 1 · 2021: 2 · 2020: 2 · 2019: 1 · 2018: 2 · 2016: 3 · 2014: 3 · 2013: 4
FWCI
4.43
Type
journal article
Language
en
Open access
closed
Licence
Locations
  • Analytical Sciences (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Ministry of Environment and Forests
  • Ministry of Environment
Topics
  • Physical Sciences › Materials Science › Metals and Alloys › Extraction and Separation Processes
  • Physical Sciences › Chemistry › Inorganic Chemistry › Radioactive element chemistry and processing
  • Physical Sciences › Chemistry › Analytical Chemistry › Analytical chemistry methods development
Keywords
Cyanex 272, liquid-liquid extraction, chloride solutions, ion exchange mechanism, distribution coefficient, hydrogen ion exchange, temperature effects

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CoChat. (2026). Citation check: Liquid-Liquid Extraction of Tetravalent Zirconium from Acidic Chloride Solutions Using Cyanex 272. https://app.cochat.ai/papers/10.2116/analsci.20.501
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Reddy, B. R., Kumar, J. R., & Reddy, A. V. (2004). Liquid-Liquid Extraction of Tetravalent Zirconium from Acidic Chloride Solutions Using Cyanex 272. Analytical Sciences. https://doi.org/10.2116/analsci.20.501

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