Study of Zn (II) extraction by 5-azidomethyl-8-hydroxyquinoline: Experiment and modelling

Autor:	Brahim Messnaoui, A. Bouklouz, M. Soufiaoui, A. Alaoui, Banacer Himmi, A. Eddaif, Said Kitane
Rok vydání:	2008
Předmět:	Chloroform Aqueous solution Hydrometallurgy Extraction (chemistry) Metals and Alloys Analytical chemistry chemistry.chemical_element 8-Hydroxyquinoline Zinc Industrial and Manufacturing Engineering Solvent chemistry.chemical_compound chemistry Materials Chemistry Chemical equilibrium
Zdroj:	Hydrometallurgy. 93:39-44
ISSN:	0304-386X
Popis:	The extraction of Zn (II) by 5-azidomethyl-8-hydroxyquinoline (HZQ) has been studied. A modified Debye–Huckel equation was used for modeling of system Zn(II)/HZQ/HCl/Chloroform in various conditions of use. The distribution ratio of HZQ and of Zn (II) in organic and aqueous phases has been treated. log 10 ( P HZQ ) = 2.91 is obtained for HZQ coefficient of partition and log 10 ( k HZQ ) = 4.23 for constant of chemical equilibrium HZQ + H 3 O + ⇌H 2 (ZQ) + + H 2 O. From quantitative evaluation of the extraction equilibrium data of Zn (II), it has been deduced that the predominant complex extracted is Zn(ZQ). The extraction constant of Zn (ZQ) 2 has a value of log 10 ( k 1200 ) =0.077. The calculated results are compared to the experimental data.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::af2232f1c97678a15c1cbb111674d186 https://doi.org/10.1016/j.hydromet.2008.02.017 Zobrazit plný text záznamu Full Text from ScienceDirect