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Indian Journal of Chemical Technology (IJCT) >
IJCT Vol.11 [2004] >
IJCT Vol.11(6) [November 2004] >
| 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 Code: | B03D 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 ~ 25ºC. 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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