The study of solvent extraction of Cobalt (II) ion by a new
azo derivative of 8-Hydroxyquinolin (DPDQ), had been synthesized. Many effected
parameters on the extraction process were studied. Solvent extraction is a
mature technique in that extensive experience has led to a good understanding
of the fundamental chemical reactions. At the same time, when compared with
many other chemical separation processes like precipitation, distillation, or
pyro metallurgical treatment, the large-scale application is solvent
extraction. Parameters such as: acidity of the medium was found to be equal to
pH of 10, the equilibrium time for the extraction was ten minutes, polarity of
solvents showed the effectiveness of dielectric constant of solvents on
extraction process, interference of some anion(s) and cation(s) effected on
extraction,; optimum metal concentration that used in extraction method; effect
of different salts such as: Sodium chloride, Sodium nitrate, etc. and effect of
temperature which showed the stability of extracted complex at different
temperatures were considered. The thermodynamic functions (∆H,∆G,∆S) were
calculated and they showed that the reaction between the ligand and the metal
ion was exothermic and spontaneous. The extraction stoichiometry was studied
using two methods: Job's and Molar ratio. It was found to be (M: L) (1:2) the
shape of complex was octahedral. The constant of stability of complex using the
mole ration method was calculated. The spectroscopy of UV-visible, F.T.I. R,
HNMR, CNMR, and mass were studied for both the reagent and complex in organic
phase that identified the ligand and complex. Other physical constants such as
melting point and conductivity were studied. Some biological species and drugs
were used to extract Cobalt ion from its applications. From this research it
was found the new ligand can be used to extract the Co2+ from biological and
drug samples with good results.
Author(s) Details:
Hussein Mubarak Mohsin,
Department of Chemistry, Faculty of Science, University of Kerbala,
Karbala, Iraq.
Alaa Frak Hussain,
Department
of Chemistry, Faculty of Science, University of Kerbala, Karbala, Iraq.
Please see the link here: https://stm.bookpi.org/CICMS-V8/article/view/14091
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