Experimental Study on De-Fluorinating by Adding Dilute Alkali in Wet Phosphoric Acid Extraction Organic Phase

Hai Yan Zhang; Jin Yang; Da Zeng Ming; Zhi Xiang Li

doi:10.4028/www.scientific.net/AMM.662.46

Paper Titles

Mechanical Properties of Polypropylene Fiber Concrete after High Temperature
p.24

Electrospun Nanofibers for Fast Dissolution of Naproxen Prepared Using a Coaxial Process with Ethanol as a Shell Fluid
p.29

Study on Mg-Y-Mishmetal-Zr Alloy Melt Reaction
p.33

The Influence of Modified Polytetrafluoroethylene(PTFE) on the Properties of PA6/PTFE Blends
p.38

Experimental Study on De-Fluorinating by Adding Dilute Alkali in Wet Phosphoric Acid Extraction Organic Phase
p.46

Problems and Countermeasures in the Application of the Fire Chemical Detection Equipment Based on Material Properties
p.51

Metal-Catalyzed Synthesis of a Monomethine Cyanine
p.55

Efficient Synthesis of DiAZT Triphosphate
p.59

Preparation of Bis-Functionalized 1,4-Diaminobutane Derivatives
p.63

HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 662Experimental Study on De-Fluorinating by Adding...

Experimental Study on De-Fluorinating by Adding Dilute Alkali in Wet Phosphoric Acid Extraction Organic Phase

Abstract:

Possible ways to remove fluoride from phosphoric acid are extraction,but there are always generated a second organic phase ,where still have small amounts of impurities such as fluoride,sulfate,iron,aluminum and heavy metals. The traditional process using pure water or dilute phosphoric acid washing the organic phase to get phosphoric acid ,but the impurities removing rate is not obvious.This study explore a new way to changes the washing detergent,using dilute alkali solution to reduce fluoride content of stripping in phosphoric acid.The optimization of experimental conditions is dilute alkali mass fraction 20%,dosage 0.4%,temperature 45°C,the defluorization rate can be 67.75% and phosphorus pentoxide yield rise to 95.50%.This study provides a new idea to improve defluorination rate in industrial production.

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Applied Mechanics and Materials (Volume 662)

Pages:

46-50

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.662.46

Citation:

Cite this paper

Online since:

October 2014

Authors:

Hai Yan Zhang, Jin Yang, Da Zeng Ming, Zhi Xiang Li

Keywords:

De-Fluorization Rate, Organic Phase, Phosphorus Pentoxide Yield, Wet Phosphoric Acid

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] Sietse van der Sluis, Annie H.M. Schrijver, Frits P.C. Baak, andGerda M. van Rosmalen. Ind. Eng. Chem., Vol. 27, NO. 3, (1988).

Google Scholar

[2] Nair C.S. B; Radhakrishnan, B; Sasikumar,N. The Purification of Wet-Process Phosphoric Acid by Selective Solvent Extraction. Process of the 1nd International Congress on Phosphorus Compounds, Boston, MA, April 21-25, 1980; pp.541-556.

Google Scholar

[3] Kavitha Jayachandran I.C. Pius, Chetty K, et al: Industrial& Engineering Chemistry Research. Vol. 52(2013), pp.5418-5477.

Google Scholar

[4] A.A. EI-Bayaa N.A. Badawy A.M. Gamal I.H. Zidan A.R. Mowafy. Journal of Hazardous Materials (2011), pp.324-229.

Google Scholar

[5] L.A. Guirguis H.K. Fouad R.M. EL-Rakaiby, Purification of commercial phosphoric acid to the food grade quality by liquid/liquid solvent extraction, Mansoura J. Chem. 35(2008): 51-72.

Google Scholar

[6] V. Slack, Phosphoric Acid, Marcel Dekker, New York, (1968).

Google Scholar