The extraction of zinc and cadmium by tri-n-butyl phosphate from aqueous chloride solutions

Forrest, V.; Scargill, D.; Spickernell, D.R.

doi:10.1016/0022-1902(69)80067-9

Cited by 19 publications

(3 citation statements)

References 7 publications

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“…Solvent extraction − and ion exchange , can be used to remove the toxic zinc(II) from spent pickling solutions. The MeS process 7 was developed by MX-Processer AB in Sweden for the recovery of zinc from spent hydrochloric acid pickling liquors, but it is not used.…”

Section: Introductionmentioning

confidence: 99%

Removal of Zinc(II) from Spent Hydrochloric Acid Solutions from Zinc Hot Galvanizing Plants

Cierpiszewski

Miesiąc

Regel‐Rosocka

et al. 2002

Ind. Eng. Chem. Res.

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The extraction of zinc(II) from spent pickling hydrochloric acid solutions obtained in zinc hot-dip galvanizing plants was studied. Tributyl phosphate and its mixtures with di(2-ethylhexyl)phosphoric acid (DEHPA), HOE F 2562, ALIQUAT 336, ALAMINE 304, ALAMINE 308, ALAMINE 310, ALAMINE 336, and CYANEX 301 were used as extractants. The acidic extractants (CYANEX 301 and DEHPA) did not extract both zinc(II) and iron(III) from 10% HCl. Precipitation occurred or stable emulsions were formed when ALAMINE 304, ALAMINE 308, and ALAMINE 310 were used. Each of the other reagents coextracted both zinc(II) and iron(III). The latter had to be reduced to iron(II) prior to extraction. Tributyl phosphate and HOE F 2562 showed the best extraction performance. ALAMINE 336 and ALIQUAT 336 induced the oxidation of iron(II) to iron(III), thus enhancing the coextraction of iron. Zinc(II) could be effectively stripped from the loaded phases containing TBP and HOE F 2562 with water. A higher efficiency of stripping was observed in the second stage.

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Section: Introductionmentioning

confidence: 99%

Removal of Zinc(II) from Spent Hydrochloric Acid Solutions from Zinc Hot Galvanizing Plants

Cierpiszewski

Miesiąc

Regel‐Rosocka

et al. 2002

Ind. Eng. Chem. Res.

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“…Various reagents were used for removal of zinc(II) from hydrochloric acid solutions, including spent etching wastes ( − ). Schügerl et al () studied the use of various alkylamines, trialkylphosphine oxides, and tributylphosphine sulfide.…”

Section: Introductionmentioning

confidence: 99%

Recovery of Zinc(II) from HCl Spent Pickling Solutions by Solvent Extraction

Regel

Sastre

Szymanowski

2001

Environ. Sci. Technol.

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Recovery of zinc(II) from HCl spent pickling solutions by solvent extraction using CYANEX921, CYANEX923, CYANEX302, tributyl phosphate, and ALAMINE336 extractants was studied. Tributyl phosphate was selected as suitable extractant. It permitted both effective zinc(II) extraction and the stripping from loaded organic phase with water. The presence of iron(II) did not affect zinc extraction, and only negligible oxidation of iron(II) was observed during extraction experiments. CYANEX reagents and ALAMINE336 extracted zinc(II) strongly, but the stripping with water was ineffective. Moreover, a significant oxidation of iron(II) to iron(III) occurred during extraction. Each of three reagents (CYANEX923, ALAMINE336 and TBP) extracted iron(III) very well. Thus, if iron(III) was present in the spent pickling solution, prior to the extraction it had to be reduced to iron(II). The oxidation was low for tributyl phosphate and high for CYANEX923 and ALAMINE336. CYANEX302 was inactive both for zinc(II) and iron(III) and could not be used for extraction of zinc(II) from spent pickling hydrochloric acid solutions.

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“…The extraction of zinc from chloride solutions has received particular interest and different reagents have been investigated: TBP,3, 4 di‐ n ‐pentylpentaphosphonate (DPPP),5 di‐ n ‐butylbutylphosphonate (DBBP),6 Acorga ZNX50,7 Kelex 100,8 carboxylic acids,9 D2EPHA,4, 10 Cyanex 302,11, 12 Aliquat 33613 and secondary amines 14…”

Section: Introductionmentioning

confidence: 99%

Solvent extraction of Zn(II) by Cyanex 923 and its application to a solid‐supported liquid membrane system

Martínez

2001

J of Chemical Tech & Biotech

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The extraction of zinc(II) by Cyanex 923 (phosphine oxides mixture) in Solvesso 100 from hydrochloric acid solution has been investigated. The extraction reaction is exothermic. The numerical analysis of metal distribution data suggests the formation of ZnCl 2 . L 2 ,HZnCl 3 . 2L and H 2 ZnCl 4 . 2L(L = ligand) in the organic phase with formation constants K ext = 4.1,5.6 Â 10 9 and 6.7 Â 10 9 , respectively. The results obtained for zinc(II) distribution have been implemented in a solid-supported liquid membrane system. The in¯uence of source phase stirring speed, membrane composition and metal concentration on zinc transport have been investigated.

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The extraction of zinc and cadmium by tri-n-butyl phosphate from aqueous chloride solutions

Cited by 19 publications

References 7 publications

Removal of Zinc(II) from Spent Hydrochloric Acid Solutions from Zinc Hot Galvanizing Plants

Removal of Zinc(II) from Spent Hydrochloric Acid Solutions from Zinc Hot Galvanizing Plants

Recovery of Zinc(II) from HCl Spent Pickling Solutions by Solvent Extraction

Solvent extraction of Zn(II) by Cyanex 923 and its application to a solid‐supported liquid membrane system

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