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Pre-concentration of some heavy metal ions with AlO–HQ and AlO–PHQ and their studies by FTIR and spectroscopy

Research Authors
Mostafa M. Kamal - Abd El-Aziz Y. El-Sayed - Seddique M. Ahmed -
Ahmed A. Omran - Mohamed M. Shahata
Research Abstract

Immobilization of HQ and PHQ on the surface of alumina, Al2O3, ( referred to it by AlO ) as an application for cation exchange of Al(III) in solution, used them for extraction of some heavy metal ions from their solutions and calculate the capacity of them. Immobilization of HQ or PHQ on Al2O3 was carried out and used for extraction of some metal ions as Fe(III), Cu(II), Co(II) and Ni(II) from its solution. Spectra of substrate (AlO-HQ, AlO-PHQ or AlO-Cu) at universal buffer solution (pH 7.2 ± 0.1) was recorded, solution of metal ion was added, after contact time, filtrate, and dissolve the solid precipitate in pure ethanol, a peak at 305 nm was observed corresponding to HQ-Al(III). Addition of Cu(II) ion solution to AlO-HQ, a peak at 380 nm was appeared corresponding to HQ-Cu(II), the peak at 305 nm decreased until disappeared . The capacity of AlO-HQ was 100 mmol/g. While, addition of Fe(III) ion solution, new two peaks were appeared at 580 and 455 nm corresponding to formation of HQ-Fe(III) coordinated complex. The capacity of AlO-HQ for Fe(III) ion was 100 mmol/g. In addition of Ni(II) and Co(II) , the capacity of AlO-HQ for extraction of Ni(II) and Co(II) are 62.5 and 150 mmol/g, respectively. In the same conditions, and by the same way, Uv-visible absorption spectra of some metal ions extracted by AlO-PHQ and calculate the capacity of these metals as: [Cu(II): 500, Fe(III): 500, Ni(II): 75 and Co(II): 250 mmol/g ]. As an application, extraction of Ni(II) from real solution sample (Nickel nut) by AlO-PHQ was observed.

Research Department
Research Journal
Arabian Journal of Chemistry
Research Publisher
Elsevier,
Research Rank
1
Research Vol
(2015) 8, 442-449
Research Website
NULL
Research Year
2015
Research Pages
8