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Dissolution of the chrysotile structure in nitric-acid solutions at different pH

Published online by Cambridge University Press:  02 January 2018

Teruhisa Hongo
Teruhisa Hongo*
Affiliation:
Work Environment Research Group, National Institute of Occupational Safety and Health, Japan, 6-21-1 Nagao, Tama-Ku, Kawasaki 214-8585, Japan
*
*E-mail: hongo@h.jniosh.go.jp
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Abstract

The nitric-acid dissolution of chrysotile was investigated with the aim of revealing the effect of pH on its structure. Chrysotile becomes more soluble at lower pH, with the octahedral, brucite sheet more readily dissolved than the tetrahedral sheet. The dissolution of the brucite sheet increases the pH of the solvent, because of the release of OH− groups along with the Mg2+ ions. At pH 2.00, the characteristic cylindrical fibre bundle structure of chrysotile is retained after dissolution, although the outside surface of each fibre becomes rough. Chrysotile remains fibrous upon dissolution at pH 1.08, but the fibres are no longer crystalline and their cylindrical structure collapses. The nitric-acid treatments result in an increase in both the specific surface area and the pore volume of chrysotile.

Keywords

Chrysotiledissolutionlayer silicatepH
Type
Research Article
Information
Clay Minerals , Volume 51 , Issue 5 , December 2016 , pp. 715 - 722
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 2016

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References

Anbalagan, G., Sivakumar, G., Prabakaran, S. & Gunasekaran, S. (2010) Spectroscopic characterization of natural chrysotile. Vibrational Spectroscopy, 52, 122–127.CrossRefGoogle Scholar
Belver, C., Bañares Muñoz, A.B. & Vicente, M.A. (2002) Chemical activation of a kaolinite under acid and alkaline conditions. Chemistry of Materials, 14, 2033–2043.CrossRefGoogle Scholar
Brindley, G.W. & Brown, G. (1980) Crystal Structure of Clay Minerals and their X-ray Identification. Monograph 5, Mineralogical Society, London.CrossRefGoogle Scholar
Cattaneo, A., Gualtieri, A.F. & Artioli, G. (2003) Kinetic study of the dehydroxylation of chrysotile asbestos with temperature by in situ XRPD. Physics and Chemistry of Minerals, 30, 177–183.CrossRefGoogle Scholar
Dana, J.D., Hurlbut, C.S. & Klein, D. (1977) Manual of Mineralogy. John Wiley & Sons, New York.Google Scholar
Dlugogorski, B.Z. & Balucan, R.D. (2014) Dehydroxylation of serpentine minerals: Implications for mineral carbonation. Renewable & Sustainable Energy Reviews, 31, 353–367.CrossRefGoogle Scholar
Foresti, E., Gazzano, M., Gualtieri, A.F., Lesci, I.G., Lunelli, B., Pecchini, G., Renna, E. & Roveri, N. (2003) Determination of low levels of free fibres of chrysotile in contaminated solids by X-ray diffraction and FT-IR spectroscopy. Analytical andBioanalytical Chemistry, 376, 653–658.Google Scholar
Hargreaves, A. & Taylor, W.H. (1946) An X-ray examination of decomposition products of chrysotile (asbestos) and serpentine. Mineralogical Magazine, 27, 204–216.Google Scholar
Hume, L.A. & Rimstidt, J.D. (1992) The biodurability of chrysotile asbestos. American Mineralogist, 77, 1129–1128.Google Scholar
Kooli, F. & Jones, W. (1997) Characterization and catalytic properties of a saponite clay modified by acid activation. Clay Minerals, 32, 633–643.CrossRefGoogle Scholar
Kusiorowski, R., Zaremba, T., Piotrowski, J. & Adamek, J. (2012) Thermal decomposition of different types of asbestos. Journal of Thermal Analysis and Calorimetry 109, 693–704.CrossRefGoogle Scholar
LaDou, J., Castleman, B., Frank, A., Gochfeld, M., Greenberg, M., Huff, J., Joshi, T.K., Landrigan, P.J., Lemen, R., Myers, J., Soffritti, M., Soskolne, C.L., Takahashi, K., Teitelbaum, D., Terracini, B. & Watterson, A. (2010) The case for a global ban on asbestos. Environmental Health Perspectives, 118, 897–901.Google Scholar
Liu, K., Feng, Q., Yang, Y., Zhang, G., Ou, L. & Lu, Y. (2007) Preparation and characterization of amorphous silica nanowires from natural chrysotile. Journal of Non-crystalline Solids, 353, 1534–1539.CrossRefGoogle Scholar
Mendelovici, E., Frost, R.L. & Kloprogge, J.T. (2001) Modification of chrysotile surface by organosilanes: An IR-photoacoustic spectroscopy study. Journal Colloid and Interface Science, 238, 273–278.Google Scholar
Oze, C. & Solt, K. (2010) Biodurability of chrysotile and tremolite asbestos in simulated lung and gastric fluids. American Mineralogist, 95, 825–831.CrossRefGoogle Scholar
Pundsack, F.L. (1955) The properties of asbestos. I. The colloidal and surface chemistry of chrysotile. The Journal of Physical Chemistry, 59, 892–895.Google Scholar
Rozalen, M. & Huertas, F.J. (2013) Comparative effect of chrysotile leaching in nitric, sulfuric and oxalic acids at room temperature. Chemical Geology, 352, 134–142.CrossRefGoogle Scholar
Sugama, T., Sabatini, R. & Petrakis, L. (1998) Decomposition of chrysotile asbestos by fluorosulfonic acid. Industrial & Engineering Chemistry Research, 37, 79–88.Google Scholar
Valentim, I.B., Martins, M.H. & Joekes, I. (2008) Influence of dipalmitoylphosphatidylcholine on the dissolution of Brazilian chrysotile. Colloids and Surfaces B, 66, 96–102.Google Scholar
Van Der Marel, H.W. & Beutelspacher, H. (1976) Atlas of Infrared Spectroscopy of Clay Minerals and their Admixtures. Elsevier Science, Amsterdam.Google Scholar
Vansant, E.F., Van Der Voort, P. & Vrancken, K.C. (1995) Characterization and Chemical Modification of the Silica Surface. Elsevier Science, Amsterdam.Google Scholar
Viti, C. (2010) Serpentine minerals discrimination by the thermal analysis. American Mineralogist, 95, 631–638.Google Scholar