Recovery of iron by jarosite crystallization and separation of vanadium by solvent extraction with extractant 7101 from titanium white waste liquid (TWWL)

The jarosite crystallization and new extractant system for extractant 7101 was used to separate iron and extract vanadium from titanium white waste liquid (TWWL). The influence factors and mechanisms of crystallization and solvent extraction were investigated and analyzed using SEM-EDS, XRD, FT-IR,...

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Autores principales:	Wang Li, Zepeng Niu, Xiaobo Zhu
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	crystallization extractant 7101 iron jarosite solvent extraction vanadium Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/ef605e7bdd0c4833ba45f75296b617c6
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spelling	oai:doaj.org-article:ef605e7bdd0c4833ba45f75296b617c62021-11-06T10:56:27ZRecovery of iron by jarosite crystallization and separation of vanadium by solvent extraction with extractant 7101 from titanium white waste liquid (TWWL)0273-12231996-973210.2166/wst.2021.114https://doaj.org/article/ef605e7bdd0c4833ba45f75296b617c62021-04-01T00:00:00Zhttp://wst.iwaponline.com/content/83/8/2025https://doaj.org/toc/0273-1223https://doaj.org/toc/1996-9732The jarosite crystallization and new extractant system for extractant 7101 was used to separate iron and extract vanadium from titanium white waste liquid (TWWL). The influence factors and mechanisms of crystallization and solvent extraction were investigated and analyzed using SEM-EDS, XRD, FT-IR, solution thermodynamic theory and extraction isothermal curve. More than 97% of iron was precipitated with the following conditions: potassium chlorate 15 g/L, pH value of 1.6, temperature of 95 °C and time of 90 min, in which the crystallization product was jarosite with a purity of 99.5%; the pH value of the solution decreased after precipitation. The extraction efficiency of vanadium reached 88.6% with 10% Fe, 5% Al(III) but less for Mg(II), K(I) and Na(I) under the conditions X7101 of 0.5, pH value of 2.0, time of 4 min and stirring speed of 40 r/min. The extraction of metal ions occurred in the order V(V) > Fe(III) > Al(III) > Mg(II) > K(I). Vanadium minimally existed as at pH 2.0, and the functional groups NH and C–N contributed to vanadium extraction using the extractant 7101. Four stages extraction and three stages of re-extraction were predicated by McCable–Thiele plots. HIGHLIGHTS Crystallization and solvent extraction were studied for separation of Fe and V.; Separation mechanism of Fe and V from TWWL was detected by thermodynamic analysis.; Removal and recovery process of Fe and V was analyzed by XRD, SEM-EDS and FT-IR.;Wang LiZepeng NiuXiaobo ZhuIWA Publishingarticlecrystallizationextractant 7101ironjarositesolvent extractionvanadiumEnvironmental technology. Sanitary engineeringTD1-1066ENWater Science and Technology, Vol 83, Iss 8, Pp 2025-2037 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	crystallization extractant 7101 iron jarosite solvent extraction vanadium Environmental technology. Sanitary engineering TD1-1066
spellingShingle	crystallization extractant 7101 iron jarosite solvent extraction vanadium Environmental technology. Sanitary engineering TD1-1066 Wang Li Zepeng Niu Xiaobo Zhu Recovery of iron by jarosite crystallization and separation of vanadium by solvent extraction with extractant 7101 from titanium white waste liquid (TWWL)
description	The jarosite crystallization and new extractant system for extractant 7101 was used to separate iron and extract vanadium from titanium white waste liquid (TWWL). The influence factors and mechanisms of crystallization and solvent extraction were investigated and analyzed using SEM-EDS, XRD, FT-IR, solution thermodynamic theory and extraction isothermal curve. More than 97% of iron was precipitated with the following conditions: potassium chlorate 15 g/L, pH value of 1.6, temperature of 95 °C and time of 90 min, in which the crystallization product was jarosite with a purity of 99.5%; the pH value of the solution decreased after precipitation. The extraction efficiency of vanadium reached 88.6% with 10% Fe, 5% Al(III) but less for Mg(II), K(I) and Na(I) under the conditions X7101 of 0.5, pH value of 2.0, time of 4 min and stirring speed of 40 r/min. The extraction of metal ions occurred in the order V(V) > Fe(III) > Al(III) > Mg(II) > K(I). Vanadium minimally existed as at pH 2.0, and the functional groups NH and C–N contributed to vanadium extraction using the extractant 7101. Four stages extraction and three stages of re-extraction were predicated by McCable–Thiele plots. HIGHLIGHTS Crystallization and solvent extraction were studied for separation of Fe and V.; Separation mechanism of Fe and V from TWWL was detected by thermodynamic analysis.; Removal and recovery process of Fe and V was analyzed by XRD, SEM-EDS and FT-IR.;
format	article
author	Wang Li Zepeng Niu Xiaobo Zhu
author_facet	Wang Li Zepeng Niu Xiaobo Zhu
author_sort	Wang Li
title	Recovery of iron by jarosite crystallization and separation of vanadium by solvent extraction with extractant 7101 from titanium white waste liquid (TWWL)
title_short	Recovery of iron by jarosite crystallization and separation of vanadium by solvent extraction with extractant 7101 from titanium white waste liquid (TWWL)
title_full	Recovery of iron by jarosite crystallization and separation of vanadium by solvent extraction with extractant 7101 from titanium white waste liquid (TWWL)
title_fullStr	Recovery of iron by jarosite crystallization and separation of vanadium by solvent extraction with extractant 7101 from titanium white waste liquid (TWWL)
title_full_unstemmed	Recovery of iron by jarosite crystallization and separation of vanadium by solvent extraction with extractant 7101 from titanium white waste liquid (TWWL)
title_sort	recovery of iron by jarosite crystallization and separation of vanadium by solvent extraction with extractant 7101 from titanium white waste liquid (twwl)
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/ef605e7bdd0c4833ba45f75296b617c6
work_keys_str_mv	AT wangli recoveryofironbyjarositecrystallizationandseparationofvanadiumbysolventextractionwithextractant7101fromtitaniumwhitewasteliquidtwwl AT zepengniu recoveryofironbyjarositecrystallizationandseparationofvanadiumbysolventextractionwithextractant7101fromtitaniumwhitewasteliquidtwwl AT xiaobozhu recoveryofironbyjarositecrystallizationandseparationofvanadiumbysolventextractionwithextractant7101fromtitaniumwhitewasteliquidtwwl
_version_	1718443768945836032

Recovery of iron by jarosite crystallization and separation of vanadium by solvent extraction with extractant 7101 from titanium white waste liquid (TWWL)

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