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Dissolution behaviour of soil kaolinites in acidic solutions

Published online by Cambridge University Press:  09 July 2018

K. Khawmee ,
A. Suddhiprakarn ,
I. Kheoruenromne ,
I. Bibi  and
B. Singh
K. Khawmee
Affiliation:
Faculty of Agriculture and Environment, The University of Sydney, NSW 2006, Australia Department of Soil Science, Faculty of Agriculture, Kasetsart University, Bangkok 10900, Thailand
A. Suddhiprakarn
Affiliation:
Department of Soil Science, Faculty of Agriculture, Kasetsart University, Bangkok 10900, Thailand
I. Kheoruenromne
Affiliation:
Department of Soil Science, Faculty of Agriculture, Kasetsart University, Bangkok 10900, Thailand
I. Bibi
Affiliation:
Faculty of Agriculture and Environment, The University of Sydney, NSW 2006, Australia
B. Singh*
Affiliation:
Faculty of Agriculture and Environment, The University of Sydney, NSW 2006, Australia
*
*E-mail: [email protected]
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Abstract

Highly weathered soils of the tropics and subtropics commonly have kaolinitedominated clay fractions. Under acidic conditions prevailing in these soils kaolinite dissolution occurs, contributing to the high levels of soluble Al in these soils. This study evaluates the dissolution behaviour of kaolinites from subsurface horizons of highly weathered soils from Thailand, along with a soil kaolinite from Western Australia (WA kaolinite) and Georgia kaolinite (KGa-2). Kaolinite-dominated clay fractions were isolated from soils by sedimentation and chemically treated to remove iron oxides. The dissolution rate of kaolinites was measured in 0.01 M NaCl as a function of pH (1–4; HCl) at 25±1°C using non-stirred flow-through reactors. Kaolinite dissolution rates were calculated from the release of Al and Si at the steady state. In most of the experiments and at all pH values, the release of both Si and Al underwent a distinct transition from an initial period of rapid release to significantly slower release at the steady state. Aluminium and Si concentrations at the steady state were higher for soil kaolinites than the reference sample (KGa-2). At the steady state the dissolution of all kaolinites was stoichiometric except for the soil kaolinites from Thailand at pH 4, where the Al/Si ratio was well below the stoichiometric ratio. Log dissolution rate (RSi) of soil kaolinites ranged from –13.75 to –12.51, with the dissolution rate increasing significantly with decreasing solution pH. However, the dissolution rate was similar or pH independent between pH 2 and 3, which is the pH range of the point of zero net charge (PZNC) for both soil and reference kaolinites. The dissolution rate of soil kaolinite was significantly higher than the KGa-2 sample at pH < 3. The results obtained on kaolinite samples from highly weathered soils show that in highly acidic systems kaolinite is a source of soluble Al. Soil kaolinites with poorly ordered small crystals dissolve faster than better crystalline reference kaolinite (KGa-2) with larger crystals.

Keywords

kaolinite dissolutionreaction orderdegree of saturationstochiometric ratiohighly weathered soilssoil acidity
Type
Research Article
Information
Clay Minerals , Volume 48 , Issue 3 , June 2013 , pp. 447 - 461
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 2013

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Footnotes

†

Present address: Institute of Soil and Environmental Sciences, University of Agriculture Faisalabad, Faisalabad 38040, Pakistan

References

Bergmann, J., Friedel, P. & Kleeberg, R. (1998) BGMN – a new fundamental parameter based Rietveld program for laboratory X-ray sources, its use in quantitative analysis and structure investigation. Commission of Powder Diffraction, International Union of Crystallography, CPD Newsletter.Google Scholar
Bibi, I., Singh, B. & Silvester, E. (2011) Dissolution of illite in saline-acidic solution at 25°C. Geochimica et Cosmochimica Acta, 75, 3237–3249.CrossRefGoogle Scholar
Cama, J. & Ganor, J. (2006) The effects of organic acids on the dissolution of silicate minerals: A case study of oxalate catalysis of kaolinite dissolution. Geochimica et Cosmochimica Acta, 70, 2191–2209.CrossRefGoogle Scholar
Cama, J., Metz, V. & Ganor, J. (2002) The effect of pH and temperature on kaolinite dissolution rate under acidic conditions. Geochimica et Cosmochimica Acta, 66, 3913–3926.CrossRefGoogle Scholar
Carroll, S.A. & Walther, J.V. (1990) Kaolinite dissolution at 25°, 60° and 80°C. American Journal of Science, 290, 797–810.Google Scholar
Carroll-Webb, S.A. & Walther, J.V. (1988) A surface complex reaction model for the pH-dependence of corundum and kaolinite dissolution rates. Geochimica et Cosmochimica Acta, 52, 2609–2623.Google Scholar
Chin, P.F. & Mills, G.L. (1991) Kinetics and mechanisms of kaolinite dissolution: effects of organic ligands. Chemical Geology, 90, 307–317.CrossRefGoogle Scholar
Chorover, J. & Sposito, G. (1995) Dissolution behavior of kaolinitic tropical soils. Geochimica et Cosmochimica Acta, 95, 3109–3121.Google Scholar
Darunsontaya, T., Suddhiprakarn, A., Kheoruenromne, I. & Gilkes, R.J. (2010) Geochemical properties and the nature of kaolin and iron oxides in upland Oxisols and Ultisols under a tropical monsoonal climate, Thailand. Thai Journal of Agricultural Science, 43, 197–215.Google Scholar
Dougan, W.K. & Wilson, A.L. (1974) The absorptiometric determination of aluminum in water-comparison of some chromogenic reagents and development of an improved method. Analyst, 99, 413–430.Google Scholar
Ganor, J., Mogollon, J.L. & Lasaga, A.C. (1995) The effect of pH on kaolinite dissolution rates and on activation energy. Geochimica et Cosmochimica Acta, 59, 1037–1052.Google Scholar
Gautier, J.M., Oelkers, E.H. & Schott, J. (2001) Are quartz dissolution rates proportional to B.E.T. surface areas? Geochimica et Cosmochimica Acta, 65, 1059–1070.Google Scholar
Gee, G.W. & Bauder, J.W. (1986) Particle-size analysis. Pp. 383–411 in: Methods of Soil Analysis, Part I. Physical and Mineralogical Methods (Klute, A., editor). American Society of Agronomy Inc., Madison, Wisconsin, USA.Google Scholar
Huertas, F.J., Chou, L. & Wollast, R. (1998) Mechanism of kaolinite dissolution at room temperature and pressure. Part I, Surface speciation. Geochimica et Cosmochimica Acta, 62, 417–431.Google Scholar
Huertas, F.J., Chou, L. & Wollast, R. (1999) Mechanism of kaolinite dissolution at room temperature and pressure, Part II, kinetic study. Geochimica et Cosmochimica Acta, 63, 3261–3275.Google Scholar
Hughes, J.C., Gilkes, R.J. & Hart, R.D. (2009) Intercalation of reference and soil kaolins in relation to physico-chemical and structural properties. Applied Clay Science, 45, 24–35.Google Scholar
Kanket, W., Suddhiprakarn, A., Kheoruenromne, I. & Gilkes, R.J. (2005) Chemical and crystallographic properties of kaolin from Ultisols in Thailand. Clays and Clay Minerals, 53, 478–489.CrossRefGoogle Scholar
Khawmee, K., Suddhiprakarn, A., Kheoruenromne, I. & Singh, B. (2013) Surface charge properties of kaolinite from Thai soils. Geoderma, 192, 120–131.Google Scholar
Koroleff, F. (1976) Determination of silicon. Pp. 149–158 in: Methods of Sea Water Analysis (Grasshoff, K., Ehrhardt, M. & Kremling, K., editors). Verlag Chemie, USA.Google Scholar
Mehra, O.P. & 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.Google Scholar
Metz, V. & Ganor, J. (2001) Stirring effect on kaolinite dissolution rate. Geochimica et Cosmochimica Acta, 65, 3475–3490.Google Scholar
Metz, V., Amram, K. & Ganor, J. (2005) Stoichiometry of smectite dissolution reaction. Geochimica et Cosmochimica Acta, 69, 1755–1772.CrossRefGoogle Scholar
Nagy, K.L., Blum, A.E. & Lasaga, A.C. (1991) Dissolution and precipitation kinetics of kaolinite at 80°C and pH 3: The dependence on solution saturation state. American Journal of Science, 291, 649–686.Google Scholar
Parkhurst, D.L. & Appelo, C.A.J. (1999) User's guide to PHREEQC (version 2) – a computer program for speciation, batch reaction, one dimensional transport, and inverse geochemical calculations. U.S. Geological Survey Water Resources Inventory Report, 99-4259.Google Scholar
R Core Team (2012) R: A language and environment for statistical computing. R Foundation for Statistical Computing, Vienna, Austria. ISBN 3-900051-07-0, URL http://www.R-project.org/ Google Scholar
Ritchie, G.S.P. (1994) Role of dissolution and precipitation of minerals in controlling soluble aluminium in acidic soils. Advances in Agronomy, 53, 47–84.Google Scholar
Rozalen, M.L., Heurtas, F.J., Brady, P.V., Cama, J., Garcia-Palma, S. & Linares, J. (2008) Experimental study of the effect of pH on the kinetics of montmorillonite dissolution at 25°C. Geochimica et Cosmochimica Acta, 72, 4224–4253.Google Scholar
Singh, B. & Gilkes, R.J. (1992) Properties of soil kaolinites from south-western Australia. Journal of Soil Science, 43, 645–667.Google Scholar
Soil Survey Staff (2006) Keys to Soil Taxonomy, 10th ed. USDA-Natural Resources Conservation Service: Washington DC.Google Scholar
Sutheimer, S.H., Maurice, P.A. & Zhou, Q. (1999) Dissolution of well and poorly crystallized kaolinite: Al speciation and effects of surface characteristics. American Mineralogist, 84, 620–628.CrossRefGoogle Scholar
Trakoonyingcharoen, P., Kheoruenromne, I., Suddhiprakarn, A. & Gilkes, R.J. (2006) Properties of kaolins in red Oxisols and red Ultisols in Thailand. Applied Clay Science, 32, 25–39.Google Scholar
Walther, J.V. (1996) Relation between rates of aluminosilicate mineral dissolution, pH, temperature, and surface charge. American Journal of Science, 296, 693–728.Google Scholar
Wieland, E. & Stumm, W. (1992) Dissolution kinetics of kaolinite in acidic aqueous solution at 25°C. Geochimica et Cosmochimica Acta, 56, 3339–3355.Google Scholar
Wieland, E., Wehrli, B. & Stumm, W. (1988) The coordination chemistry of weathering: III. A generalization on the dissolution rates of minerals. Geochimica et Cosmochimica Acta, 52, 1969–1981.Google Scholar
Xie, Z & Walther, J.V. (1992) Incongruent dissolution and surface area of kaolinite. Geochimica et Cosmochimica Acta, 56, 3357–3363.Google Scholar
Yang, L. & Steefel, C.I. (2008) Kaolinite dissolution and precipitation kinetics at 22°C and pH 4. Geochimica et Cosmochimica Acta, 72, 99–116.Google Scholar
Yoothong, K., Moncharoen, L., Vijarnson, P. & Eswaran, H. (1997) Clay mineralogy of Thai soils. Applied Clay Science, 11, 357–371.CrossRefGoogle Scholar