Hostname: page-component-586b7cd67f-t8hqh Total loading time: 0 Render date: 2024-12-02T19:51:03.539Z Has data issue: false hasContentIssue false
  • English
  • Français

Flocculation of Na-montmorillonite by electrolytes

Published online by Cambridge University Press:  09 July 2018

E. A. Ferreiro  and
A. K. Helmy
E. A. Ferreiro
Affiliation:
Instituto de Edafologia e Hidrologia, Universidad Nacional del Sur, Bahia Blanca, Argentina
A. K. Helmy
Affiliation:
Instituto de Edafologia e Hidrologia, Universidad Nacional del Sur, Bahia Blanca, Argentina
Get access Rights & Permissions [Opens in a new window]

Abstract

The flocculation of a Na-montmorillonite suspension by Na, Ca, and Al chlorides was investigated using the optical absorbance method. The flocculation of the clay was found to be irreversible with a degree of irreversibility that increases with electrolyte concentration. The flocculation values of Na, Ca and Al chlorides were found to be equal to 8, 0·25 and 0·032 mmol/l respectively. The ratio of the flocculation values of the different salts is in reasonable agreement with the ratio predicted by current theories of colloid stability.

Type
Research Article
Information
Clay Minerals , Volume 10 , Issue 3 , July 1974 , pp. 203 - 213
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1974

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

Benitez, R. & Macritchie, F. (1972) J. Colloid Interface Sci. 40, 310.Google Scholar
Derjaguin, B.V. & Landau, L. (1941) Acta Physicochim. U.R.S.S. 14, 633.Google Scholar
Hiemenz, P.C. & Vold, R.D. (1966) J. Colloid Interface Sci. 21, 479.CrossRefGoogle Scholar
Jenny, H. & Reitemeier, R.F. (1935) J. Phys. Chem. 39, 593.Google Scholar
Kahn, A. (1958) J. Colloid Sci. 13, 51.Google Scholar
Kahn, A. (1959) Clays Clay Miner. 6, 220.Google Scholar
Kruyt, H. (editor) (1952) Colloid Science, Vol. I, p. 300. Elsevier, Amsterdam.Google Scholar
Laffer, B.G., Posner, A.M. & Quirk, J.P. (1969) J. Colloid Interface Sci. 30, 335.Google Scholar
Lawrence, S.G. & Parfitt, G.D. (1971) J. Colloid Interface Sci. 35, 675.CrossRefGoogle Scholar
Oster, G. (1947) J. Colloid Sci. 2, 291.Google Scholar
Ottewill, R.H. & Watanabe, A. (1960) Kolloidzeit, 170, 38.CrossRefGoogle Scholar
Overbeek, J.T.H.G. (1952) In Kruyt H. (Ed.) Colloid Science, Vol. I. pp. 306-8, Elsevier, Amsterdam.Google Scholar
Reerink, H. & Overbeek, J.T.H.G. (1954) Discuss. Faraday Soc. 18, 74.Google Scholar
Schofield, R.K. & Taylor, A.W. (1954) J. Chem. Soc. 4445.Google Scholar
Timasheff, S.N. (1966) J. Colloid Interface Sci. 21, 489.Google Scholar
Verwey, E.J.W. & Overbeek, J.T.H.G. (1948) Theory of the Stability of Lyophobic Colloids. Elsevier, Amsterdam.Google Scholar