Journal
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
Volume 102, Issue 15, Pages 3419-3436Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/03067319.2020.1769616
Keywords
Removal; iron; phosphoric acid and Puromet MTS9570
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This paper investigates the effect of Puromet MTS9570 resin on the removal of iron from wet process phosphoric acid through batch experiments. The optimum conditions for iron removal were determined by studying various parameters. The results show that Puromet MTS9570 resin effectively removes iron with minimal impact on the phosphoric acid concentration, and the experimental data fits well with the Langmuir isotherm model.
In this paper, batch experiments were performed to study the effect of Puromet MTS9570 resin on the removal process of iron from wet process phosphoric acid (WPPA). Various parameters such as effect of initial iron concentration, effect of resin amount of addition, effect of phosphoric acid redox potential, effect of stirring time and effect of temperature were investigated to determine the optimum conditions required for iron removal. The numerical results obtained support the experimental data on removal of iron value where 12.0 g Puromet MTS9570 resin could remove 70.0% of already present iron with very small negative effect on the H(3)PO(4)concentration. The adsorption isotherms were studied to evaluate the maximum sorption capacity of Puromet MTS9570 resin. The experimental results were found to fit with Langmuir isotherm model (R-2 = 0.9927), the experimental data fitted well with Langmuir than Freundlich.
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