Hostname: page-component-586b7cd67f-gb8f7 Total loading time: 0 Render date: 2024-11-29T02:35:25.120Z Has data issue: false hasContentIssue false
  • English
  • Français

Kinetics of phosphate sorption and desorption by synthetic aluminous goethite before and after thermal transformation to hematite

Published online by Cambridge University Press:  09 July 2018

H. D. Ruan  and
R. J. Gilkes
H. D. Ruan
Affiliation:
Soil Science and Plant Nutrition, Faculty of Agriculture, University of Western Australia, Nedlands, 6907, Australia
R. J. Gilkes
Affiliation:
Soil Science and Plant Nutrition, Faculty of Agriculture, University of Western Australia, Nedlands, 6907, Australia
Get access Rights & Permissions [Opens in a new window]

Abstract

Goethite is an important component of many soils and its transformation to hematite by fire may affect phosphate retention. This study deals with the kinetics of phosphate sorption and desorption by synthetic aluminous goethites and their dehydroxylated products. Phosphate sorption and subsequent desorption were measured for periods up to 128 h. Phosphate sorption increased with equilibrium solution concentration, Al substitution and surface area, and decreased with increasing crystal size. The trend in amount of phosphate sorbed was: partially dehydroxylated goethite > hematite > goethite. Sorption and desorption kinetics are well described by the modified Elovich equation. Desorption of a minor proportion of the sorbed P was rapid and this was sometimes followed by minor resorption. The amount of P desorbed directly reflected the amount that was initially sorbed. Acid dissolution of the Fe oxides with sorbed phosphate suggested that most phosphate was present at the crystal surface and not in relatively poorly accessible micropores.

Type
Research Article
Information
Clay Minerals , Volume 31 , Issue 1 , March 1996 , pp. 63 - 74
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1996

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Ainsworth, C.C. & Sumner, M.E. (1985) Effect of aluminum substitution in goethite on phosphorus adsorption. II. Rate of adsorption. Soil Sci. Soc. Am. J. 49, 1149–1153.Google Scholar
Ainsworth, C.C, Sumner, M.E. & Hurst, V.J. (1985) Effect of aluminum substitution in goethite on phosphorus adsorption: I. Adsorption and isotopic exchange. Soil Sci. Soc. Am. J. 49, 1142–1149.CrossRefGoogle Scholar
Atkinson, R.J., Hingston, E.J., Posner, A.M. & Quirk, J.P. (1970) Elovich equation for the kinetics of isotope exchange reactions at solid-liquid interfaces. Nature, 226, 148–149.Google Scholar
Barrow, N.J. (1983) A mechanistic model for describing the sorption and desorption of phosphate by soil. d. Soil Sci. 34, 733–750.CrossRefGoogle Scholar
Barrow, N.J. (1984) Modelling the effects of pH on phosphate sorption by soil. d. Soil Sci. 35, 283–297.Google Scholar
Barrow, N.J. & Shaw, T.C. (1975) The slow reactions between soil and anions. 3. The effects of time and temperature on the decrease in phosphate concentration in the soil solution. Soil Sci. 119, 167–177.CrossRefGoogle Scholar
Chien, S.H. & Clayton, W.R. (1980) Application of Elovich equation to the kinetics of phosphate release and sorption in soils. Soil Sci. Soc. Am. J. 44, 265–268.Google Scholar
Colombo, C., Barron, V. & Torrent, J. (1994) Phosphate adsorption and desorption in relation to morphology and crystal properties of synthetic hematites. Geoehim. Cosmochim. Acta, 58, 1261–1269.Google Scholar
Cook, I.J. (1966) A kinetic approach to the description of soil phosphate status. J. Soil Sci. 17, 56–64.Google Scholar
Cornell, R.M., Posner, A.M. & Quirk, J.P. (1974) Crystal morphology and the dissolution of goethite. J. Inorg. Nucl. Chem. 36, 1937–1946.Google Scholar
Goodman, B.A. & Lewis, D.G. (1981) Mössbauer spectra of aluminous goethite (α-FeOOH). d. Soil Sci. 32, 351–363.Google Scholar
Griffin, R.A. & Jurinak, J.J. (1974) Kinetics of phosphate interaction with calcite. Soil Sci. Soc. Am. J. 38, 75–79.Google Scholar
Hingston, F.J., Posner, A.M. & Quirk, J.P. (1974) Anion adsorption by goethite and gobbsite. II. Desorption of anions from hydrous oxide surfaces. d. Soil Sci. 25, 16–26.Google Scholar
Kabai, J. (1973) Determination of specific activation energies of metal oxides and metal oxide hydrates by measurement of the rate of dissolution. Acta Chem. Acad. Sci. Hung. 78, 57–73.Google Scholar
Kuo, S. & Lotse, E.G. (I972) Kinetics of phosphate adsorption by calcium carbonate and Ca-kaolinite. Soil Sci. Soc. Am. Proc. 36, 725–729.Google Scholar
Kuo, S. & Lotse, E.G. (1973) Kinetics of phosphate adsorption by hematite and gibbsite. Soil Sci. 116, 400–406.Google Scholar
LaverdiéRE, M.R. & Karam, A. (1984) Sorption of phosphorus by some surface soils from Quebee in relation to their properties. Commun. Soil Sci. Plant Anal. 15, 1215–1230.Google Scholar
Low, M.J.D. (1960) Kinetics of chemisorption of gases on solids. Chem. Reviews. 60, 267–312.CrossRefGoogle Scholar
Madrid, L. & Posner, A.M. (1979) Desorption of phosphate flom goethite. J. Soil Sci. 30, 697–707.Google Scholar
Mckeaoue, J.A. & Day, J.H. (1966) Dithionite- and oxalate- extractable Fe and Al as aids in differentiating various classes of soils. Can. Y. 5'oil Sci. 46, 13–22.Google Scholar
Neoh, L.S. (1975) Desorption of phosphate from goethite. PhD thesis, Univ. Western Australia.Google Scholar
Ruan, H.D., & Gmkes, R.J. (1995a) Dehydroxylation of aluminous goethite: unit cell dimensions, crystal size and surface area. Clays Clay Miner. 43, 196–211.Google Scholar
Ruan, H.D. & Gmkes, R.J. (1995b) Acid dissolution of dehydroxylated aluminous goethite. Clay Miner. 30, 55–65.Google Scholar
Schulze, D.G. & Schwertmann, U. (1984) The influence of aluminium on iron oxides: X. Properties of A1-substituted goethites. Clay Miner. 19, 521–539.CrossRefGoogle Scholar
Schwertmann, U. (1984) The influence of aluminium on iron oxides: IX. Dissolution of Al-goethite in 6 M HC1. Clay Miner. 19, 9–19.CrossRefGoogle Scholar
Scitwertmann, U. & Taylor, R.M. (1989) lron oxides. Pp. 379–438 in: Minerals in Soil Environments (Dixon, J.B. & Weed, S.B., editors). 2nd ed. Soil Science Society of America, Madison, Wisconsin, USA.Google Scholar
Singh, B. & Gilkes, R.J. (1992) XPAS: An interactive computer program for analysis of X-ray powder diffraction patterns. Powder Diffraction, 7, 6–10.Google Scholar
Stoop, W.A. (I983) Phosphate adsorption mechanisms in oxidic soils: implications for P availability to plants. Geoderma, 31, 57–69.Google Scholar
Torrent, J. (1987) Rapid and slow phosphate sorption by Mediterranean soils: effect of iron oxides. Soil Sci. Soc. Am. J. 51, 78–82.Google Scholar
Torrent, J., Barron, V. & Schwertmann, U. (1990) Phosphate adsorption and desorption by goethites differing in crystal morphology. Soil Sci. Soc. Am. J. 54, 1007–1012.Google Scholar
Watanabe, F.S. & Olsen, S.R. (1965) Test of an ascorbic acid method for determining phosphorous in water and NaHCO3 extracts from soil. Soil Sci. Soc. Am. Prac. 29, 677–678.CrossRefGoogle Scholar
Watari, F., Delavignette, P., Van Landuyt, J. & Amelinckx, S. (1983) Electron microscopic study of dehydration transformations III. High resolution observation of the reaction process FeOOH → Fe2O3 . J. Solid State Chem. 48, 49–64.Google Scholar
Watari, F., Van Landuyt, J., Delavignette, P. & Amelinckx, S. (1979) Electron microscopic study of dehydration Transformations I. Twin formation and mosaic structure in hematite derived from goethite. J. Solid State Chem. 29, 137–150.Google Scholar
Willett, I.R., Chartres, C.J. & Nouyen, T.T. (1988) Migration of phosphate into aggregated particles of ferrihydrite. J. Soil Sci. 39, 275–282.Google Scholar