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Title: Flotation-separation of nickel from aqueous media using some hydrazone derivatives as organic collectors and oleic acid as surfactant
Authors: Ghazy, S E
Mostafa, H A
Farra, S A El
Fouda, A S
Keywords: Flotation
hydrazone derivatives
nickel
surfactant
oleic acid
organic collectors
Issue Date: Nov-2004
Publisher: CSIR
IPC CodeB03D 1/004, 101:02
Abstract: A simple and rapid procedure was developed for the quantitative flotation of nickel(II) from aqueous solutions. Hydrazone derivatives such as: 4-acetylpyridine-[N-(3-hydroxy-2-naphthoyl)]hydrazone (H2APHNH), thiophene-2-carbox- aldehyde-[N-(3-hydroxy-2-naphthoyl)]hydrazone (H2THNH), salicylaldehyde-[N-(3-hydroxy-2-naphthoyl)]-hydrazone (H2SHNH), p-anisaldehyde-[N-(3-hydroxy-2-naphthoyl)]hydrazone (H2-p-AHNH) and ethylacetoacetate-[N-(3-hydroxy-2-naphthoyl)]hydrazone (H2EHNH) have been used as organic collectors and oleic acid as surfactant. The different parameters, affecting the flotation process, namely, ligand and surfactant concentrations, foreign ions (which are normally present in fresh and saline waters), pH and temperature are examined. Nearly 100% of nickel ions are floated at a metal:ligand ratio of 1:2, pH ~ 7 and at a temperature ~ 25ÂșC. The procedure is successfully applied to recover Ni(II) from some water samples. The flotation mechanism is suggested.
Page(s): 787-792
ISSN: 0975-0991 (Online); 0971-457X (Print)
Source:IJCT Vol.11(6) [November 2004]

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