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Removal of Aluminium and Iron Ions from Phosphoric Acid by Precipitation of Organo-Metallic Complex Using Organophosphorous Reagent

Abstract : The industrial phosphoric acid (H3PO4) is rich of impurities including heavy metals such as aluminum, iron and magnesium which considered the most dangerous metals presents with high quantity (more than 2500 mg/L) in the Tunisian industrial phosphoric acid. This work deals with the iron and aluminum removal from phosphoric acid at low pH by precipitation of organo-metallic complex formed using an organophosphorus reagent (NTMTP). The effect of various parameters such as initial phosphoric acid concentration, initial metal ion concentration, NTMTP amount, contacting time and temperature were investigated for monometallic and bimetallic phosphoric acid solutions. The experimental results obtained, showed that the precipitation-complexation treatment used was effective for the removal of more than 90 % of iron ions and 80 % of aluminum from the phosphoric acid (1M). The highest degrees of acid purification were achieved in the first five minutes of the process.
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https://hal-u-picardie.archives-ouvertes.fr/hal-03700909
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Soumis le : mardi 21 juin 2022 - 15:02:50
Dernière modification le : mercredi 22 juin 2022 - 03:06:25

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  • HAL Id : hal-03700909, version 1

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N. Abdennebi, Karim Benhabib, C. Goutaudier, M. Bagane. Removal of Aluminium and Iron Ions from Phosphoric Acid by Precipitation of Organo-Metallic Complex Using Organophosphorous Reagent. Journal of Materials and Environmental Science, 2017, 8 (2), pp.557--565. ⟨hal-03700909⟩

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