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Flotation, speciation and determination of iron(III) using aluminon in water, real samples and wastes of power stations
Ahmed Fawzy Abdel-Hanied El-Asmy (1,*)
, Wafaa Mohammad Yousef (2) , Magda Ali Akl (3) (1) Chemistry Department, Faculty of Science, Mansoura University, 35516, Egypt
(2) Chemistry Department, Faculty of Science, Hail University, 81428, Saudi Arabia
(3) Chemistry Department, Faculty of Science, Mansoura University, 35516, Egypt
(*) Corresponding Author
Received: 30 Apr 2010 | Revised: 31 May 2010 | Accepted: 06 Jun 2010 | Published: 29 Sep 2010 | Issue Date: September 2010
Abstract
Aluminon has been investigated for the separation of iron(III) by flotation technique. This reagent formed a 1:1 stable complex in aqueous solution. An intense violet layer is formed after flotation using oleic acid (HOL). A highly selective and sensitive spectrophotometric procedure is proposed for the determination of Fe(III) after overcoming all interferences. Preliminary studies show the possibility of forming a complex with Fe(II) to an extremely low extent. Trials have been carried out to separate Fe(II) and Fe(III) using NH4SCN or NaF. To prevent the oxidation of Fe(II), NaBH4 is used. The separation of Fe(III) and Fe(II) can be achieved using 0.6 mg L-1 NaBH4. The flotation- determination method was carried out at pH 2-3. The formation constant is 1.3×107 L mol-1 with molar absorptivity of 0.2×105 L mol-1 cm-1 and detection limit of 5×10-6 mol L-1. The effect of foreign ions is avoided using excess aluminon and 0.5 mg L-1 NaBH4. The proposed procedure was applied to synthetic mixtures [Fe(III) + Fe(II)], Fe(III) and some cations, wastes of power stations, simulated samples and real ores.
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DOI: 10.5155/eurjchem.1.3.189-194.85
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Citations
[1]. Hany M. Youssef, Maged A. Azzam
Efficient removal of aluminium(III) from aqueous solutions via ion-flotation technique using aluminon as a chelating agent and oleic acid as a surfactant
International Journal of Environmental Analytical Chemistry , 1, 2021
DOI: 10.1080/03067319.2021.2003346
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DOI Link: https://doi.org/10.5155/eurjchem.1.3.189-194.85
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European Journal of Chemistry 2010, 1(3), 189-194 | doi: https://doi.org/10.5155/eurjchem.1.3.189-194.85 | Get rights and content
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