A Trial of Using Solvent Extraction for Phosphorus Recovery
Onesmus N. Mwabonje, Jia-Qian Jiang
DOI: 10.4236/jwarp.2010.29098   PDF    HTML     5,580 Downloads   10,383 Views   Citations


The purpose of this paper is to explore the use of solvent extraction for the removal and recovering phosphate from wastewater and water sources. The results revealed that to achieve the maximum phosphate removal, the best extractant was a mixture of kerosene and benzyldimethylamine at a volume ratio of 2:1. A phosphate extraction efficiency of greater than 80% was achieved on the wastewater samples tested; a model solution and real sewage. A high stripping efficiency of greater than 90% was achieved from stripping, using 6M sulphuric acid. By mixing the recycled to fresh extractants at volume ratios of 2:1, it was possible to re-use the resulting extractant from the stripping process nine times, while maintaining the overall phosphate recovery efficiency. This research revealed that solvent extraction is feasible in the respect of phosphate removal and recovery and has potential for use as an alternative method for industrial applications.

Share and Cite:

O. Mwabonje and J. Jiang, "A Trial of Using Solvent Extraction for Phosphorus Recovery," Journal of Water Resource and Protection, Vol. 2 No. 9, 2010, pp. 830-838. doi: 10.4236/jwarp.2010.29098.

Conflicts of Interest

The authors declare no conflicts of interest.


[1] EA, “Aquatic Eutrophication in England and Wales: Proposed Management Strategy,” Environmental Agency - Environmental Issue Series, Bristol, UK, 2003.
[2] S. Burk, L. Heathwaite and N. Preedy, “Transfer of Phosphorus to Surface Waters; Eutrophication,” In: Phosphorus in Environmental Technologies Principles and Applications, IWA Publishing, London, 2004, pp. 120-140.
[3] A. N. Sharpley, T. Daniel, T. Sims, et al. “Agricultural Phosphorus and Eutrophication,” ARS-149, US Department of Agriculture (USDA)-Agriculture Research Service (ARS), University Park, PA, 1999, pp. 37.
[4] M. Cox and J. Rydberg, “Introduction to Solvent Extraction' in Solvent Extraction Principles and Practice,” Marcel Dekker, Inc, New York, 2004.
[5] J. Q. Jiang, “Recovery and Reuse of Aluminium Coagulants from Coagulation Sludge by Liquid-Ion Exchange,” In: H. H. Hahn, E. Hoffmann and H. Odegaard, Ed., Chemical Water and Wastewater Treatment VI, Springer- Verlag, Berlin, 2000, pp. 373-382.
[6] J. Q. Jiang, A. Panagoulopoulos and Y. Zhang, “Recovery and Re-Use of Al and Fe Based Coagulants from Coagulation Sludge,” In: J. Miles, D. Smith, P. Owen, Ed., Management of Wastes from Drinking Water Treatment, CIWEM, London, 2002, pp. 181-189.
[7] A. M. O. Mohamed and H. E. Antia, “Developments in Geotechnical Engineering, 82 - Geoenvironmental Engineering,” Edition 1, Elsevier Science Ltd., Amsterdam, 1998.
[8] D. A. Cornwell, “An Overview of Liquid Ion Exchange with Emphasis on Alum Recovery,” Journal of the American Water Works Association, Vol. 71, No. 12, 1979, pp. 741-745.
[9] Y. Marcus, “Principles of Solubility and Solution,” In: J. Rydberg, C. Musikas and G. R. Choppin, Ed., Principles and Practices of Solvent Extraction, Mercel Dekker, Inc, New York, 1992.
[10] W. S. Perkins, “Surfactants - A Primer, an Indepth Discussion of the Behaviour of Common Types of Surfactants,” ATI - Dyeing, Printing and Finishing, 1998, pp. 51-53.
[11] C. Schaum, P. Cornel and N. Jardin, “Possibilities for a Phosphorus Recovery from Sewage Sludge Ash,” In: Proceedings of the IWA Specialist Conference on Management of Residues Emanating from Water and Wastewater Treatment, Johannesburg, South Africa, 2005, pp. 9-12.
[12] American Water Works Association, “Standard Methods for the Examination of Water and Wastewater,” 19th edition, American Water Works Association, Washington DC, 1995.
[13] VWR, “Phosphate Standard Solution,” 2003. http:// uk.vwr.com/app/Home
[14] G. M. Ritcey and A. W. Ashbrook, “Solvent Extraction - Principles and Applications to Process Metallurgy Part II,” Elsevier Scientific Publishing Company, Chaps 4-5, New York, 1979.

Copyright © 2023 by authors and Scientific Research Publishing Inc.

Creative Commons License

This work and the related PDF file are licensed under a Creative Commons Attribution 4.0 International License.