One Stage Solvent Extraction Synergism for the Purification of Industrial Wet Process Phosphoric Acid to the Food Grade Quality.
- Nuclear Materials Authority (NMA), P.O Box 530, El-Maadi, Cairo, Egypt.
- Faculty of Science, Ain Shams University, Cairo, Egypt.
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Different organic solvents were investigated, separately or in mixture for example methanol, ethanol, butanol, hexanol, octanol, TEP,D2EHPA, TBP,TOPO and a mixture of TBP plus butanol. Among these solvents, TBP plus butanol proved to be the most efficient solvents mixture. The effect of organic/aqueous phase ratio, temperature, shaking time, settling time and phosphoric acid concentration were studied. Scrubbing of the loaded organic acid was done using 4.2M pure phosphoric acid at an O/A phase ratio of 1:1 while stripping of H3PO4 was performed using distilled water of an O/A phase ratio of 3:1 in one stage. The final recovery of the process is 97.8%.
[Laila A. Guirguis, Nagwa. I. Falila and Lele H. Khalil. (2016); One Stage Solvent Extraction Synergism for the Purification of Industrial Wet Process Phosphoric Acid to the Food Grade Quality. Int. J. of Adv. Res. 4 (Apr). 1554-1564] (ISSN 2320-5407). www.journalijar.com
