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The major disadvantage of the use of Egyptian wet-process phosphoric acid as a fertilizer and in other industries is the presence of undesirable elements such as uranium, iron, cadmium and vanadium. In the present work, an integrated process based on treatment of pretreated phosphoric acid with a miscible solvent, ammonium salt and a reducing agent is described. The precipitate formed consists of a mixture of metals phosphate such as iron, uranium, cadmium. The viscous precipitate is dissolved in mother phosphoric or sulfuric acid for separation. While the phosphoric acid- miscible solvent layer is subjected to condensation and distillation in order to separate the partially purified phosphoric acid from free miscible solvent.
[N. A. Abd. El Fattah, S. Abd El Wanees, H. S. Gado, H. M. El Sayed (2015); Partial Purification of Egyptian Wet Process Phosphoric Acid with concentration of Uranium and Some Hazardous Metals by Precipitation Method Int. J. of Adv. Res. 3 (4). 0] (ISSN 2320-5407). www.journalijar.com
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