Conclusions
The process of zinc regeneration by the method of extraction from solutions close in composition to the wash water from viscose fiber manufacture has been studied under laboratory conditions.
It is recommended to carry out the extraction of zinc with a 30% solution of D2EHPA in kerosene at a pH of 2–3 and an O:W ratio of 1:1.
It is recommended to use a 15% sulfuric acid solution or a solution of precipitation bath as the re-extractant.
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Literature cited
I. Z. Éifer and G. A. Rudova, Processes of Technological Solution Regeneration in the Preparation of Man-Made Fibers. Rev. Inf. Series, “The Man-Made Fiber Industry,” [in Russian], NIITÉKhIM, Moscow (1981).
Inventor's Certificate 842031 (1976) (USSR).
E. A. Mazurenko, Handbook on Extraction [in Russian], Tekhnika, Kiev (1972).
G. Charlot, Methods of Analytical Chemistry. Quantitative Analysis of Inorganic Compounds, Vol. 2 [Russian translation], Khimiya, Moscow (1969).
Additional information
Translated from Khimicheskie Volokna, No. 4, pp. 31–32, July–August, 1983.
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Smolikov, V.V., Éifer, I.Z., Kovalev, G.D. et al. Extraction of zinc from low-concentration solutions in the manufacture of viscose fibers. Fibre Chem 15, 278–280 (1984). https://doi.org/10.1007/BF00548311
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DOI: https://doi.org/10.1007/BF00548311