Clays and Clay Minerals

, Volume 50, Issue 2, pp 217–222 | Cite as

Role of iron oxides in the phosphate adsorption properties of kaolinites from the Ivory Coast

  • J. Sei
  • J. C. Jumas
  • J. Olivier-Fourcade
  • H. Quiquampoix
  • S. StauntonEmail author


The phosphate adsorption properties of three clay samples, with kaolinite as the dominant mineral, from different deposits in the Ivory Coast have been investigated. The clays contain varying amounts of crystalline Fe oxides and kaolinite with structural Fe. All measurements were made in dilute suspension under controlled conditions of temperature, pH, ionic strength and saturating cation. Data have been fitted to Langmuir adsorption isotherms. Both P adsorption and surface area measurements have been made on samples before and after chemical removal of Fe oxides. The samples have large P adsorption capacities, which are not entirely explained by their large specific surface areas. The presence of Fe oxides makes a strong contribution to the surface area and enhances the adsorption capacities. There is little evidence that structural Fe makes a strong contribution to the enhanced P adsorption capacity.

Key Words

Adsorption Fe Oxide Goethite Hematite Kaolinite Langmuir Phosphate 


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  1. Barrow, N.J. (1984) Modelling the effects of pH on phosphate sorption by soils. Journal of Soil Science, 35, 283–297.CrossRefGoogle Scholar
  2. Bar-Yosef, B., Kafkafi, U., Rosenberg, R. and Sposito, G. (1988) Phosphorus adsorption by kaolinite and montmorillonite: I. Effect of time, ionic strength and pH. Soil Science Society of America Journal, 52, 1580–1585.CrossRefGoogle Scholar
  3. Borggaard, O.K. (1982) The influence of iron oxides on the surface area of soil. Journal of Soil Science, 33, 443–449.CrossRefGoogle Scholar
  4. Borggaard, O.K. (1983a) Effect of surface area and mineralogy of iron oxides on their surface charge and anion-adsorption properties. Clays and Clay Minerals, 31, 230–232.CrossRefGoogle Scholar
  5. Borggaard, O.K. (1983b) The influence of iron oxides on phosphate adsorption by soil. Journal of Soil Science, 34, 333–341.CrossRefGoogle Scholar
  6. Carreira, J.A. and Lajtha, K. (1997) Factors affecting phosphate sorption along a Mediterranean, dolomitic soil and vegetation chronosequence. European Journal of Soil Science, 48, 139–149.CrossRefGoogle Scholar
  7. Cabrera, F., Madrid, L. and de Arambarri, P. (1977) Adsorption of phosphate by various oxides: theoretical treatment of the adsorption envelope. Journal of Soil Science, 28, 306–313.CrossRefGoogle Scholar
  8. Cornell, R.M. and Schwertmann, U. (1996) The Iron Oxides: Structure, Properties, Reactions, Occurrence and Uses. VCH Weinheim, New York, 573 pp.Google Scholar
  9. Geelhoed, J.S., Hiemstra, T. and van Riemsdijk, W.H. (1997) Phosphate and sulfate adsorption on goethite: single anion and competitive adsorption. Geochimica et Cosmochimica Acta, 61, 2389–2396.CrossRefGoogle Scholar
  10. Goldberg, S. and Sposito, G. (1984) A chemical model of phosphate adsorption by soil: I Reference oxide minerals. Soil Science Society of America Journal, 48, 772–778.CrossRefGoogle Scholar
  11. Herbillon, A.J., Mestdagh, M.M., Vielvoye, L. and Derouane, E. G. (1976) Iron in kaolinite with special reference to kaolinite from tropical soils. Clay Minerals, 11, 201–220.CrossRefGoogle Scholar
  12. Kuo, S. and Lotse, E.G. (1972) Kinetics of phosphate adsorption by calcium carbonate and Ca-kaolinite. Soil Science Society of America Proceedings, 36, 725–729.CrossRefGoogle Scholar
  13. Manning, B.A. and Goldberg, S. (1996) Modeling arsenate competitive adsorption on kaolinite, montmorillonite and illite. Clays and Clay Minerals, 44, 609–623.CrossRefGoogle Scholar
  14. Mehra, O.P. and Jackson, M.L. (1960) Iron oxide removal from soils and clays by a dithionite-citrate system buffered with sodium bicarbonate. Clays and Clay Minerals, 7, 317–327.CrossRefGoogle Scholar
  15. Mestdagh, M.M., Vielvoye, L. and Herbillon, A.J. (1980) Iron in kaolinite: II. The relationship between kaolinite crystallinity and iron content. Clay Minerals, 15, 1–13.CrossRefGoogle Scholar
  16. Murphy, J. and Riley, J.P. (1962) A modified single solution method for the determination of phosphate in natural waters. Analytica Chimica Acta, 27, 31–36.CrossRefGoogle Scholar
  17. Pardo, M.T., Guadalix, M.E. and Garcia-Gonzalez, M.T. (1992) Effect of pH and background electrolyte on P sorption by variable charge soils. Geoderma, 54, 275–284.CrossRefGoogle Scholar
  18. Parfitt, L.R. (1978) Anion adsorption by soils and soil materials. Advanced Agronomy, 30, 1–50.Google Scholar
  19. Peüa, F. and Torrent, J. (1984) Relationships between phosphate sorption and iron oxides in Alfisols from a river terrace sequence of Mediterranean Spain. Geoderma, 33, 283–296.CrossRefGoogle Scholar
  20. Ryden, J.C. and Syers, J.K. (1975) Rationalization of ionic strength and cation effects on phosphate sorption by soils. Journal of Soil Science, 26, 395–406.CrossRefGoogle Scholar
  21. Sei, J. (1998) Etude de matériaux de dimensionalité réduite: Relation structure-propriétés dans des kaolinites naturelle de Cote d’Ivoire. PhD thesis, Univ. Montpellier, France.Google Scholar
  22. Singh, B. and Gilkes, R.J. (1992) Properties of soil kaolinites from south-western Australia. Journal of Soil Science, 43, 654–667.Google Scholar
  23. Torrent, J. (1997) Interactions between phosphate and iron oxide. Advances in Geoecology, 30, 321–344.Google Scholar
  24. Torrent, J., Barro’n, V. and Schwertmann, U. (1990) Phosphate adsorption and desorption by goethites differing in crystal morphology. Soil Science Society of America Journal, 54, 1007–1012.CrossRefGoogle Scholar
  25. White, R.E. (1980) Retention and release of phosphate by soils and soil constituents. In: Soils and Agriculture, Critical Reports on Applied Chemistry, Volume 2. Blackwell Scientific Publications, Oxford, UK.Google Scholar
  26. Yuan, G. and Lavkulich, L.M. (1994) Phosphate sorption in relation to extractable iron and aluminum in Spodosols. Soil Science Society of America Journal, 58, 343–346.CrossRefGoogle Scholar

Copyright information

© The Clay Minerals Society 2002

Authors and Affiliations

  • J. Sei
    • 1
    • 2
  • J. C. Jumas
    • 1
  • J. Olivier-Fourcade
    • 1
  • H. Quiquampoix
    • 2
  • S. Staunton
    • 2
    Email author
  1. 1.LPMC Université Montpellier IIMontpellier Cedex 5France
  2. 2.Unité de Science du Sol, INRAMontpellier Cedex 1France

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