HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Lou, G. Q. J. Articles by Huang, P. M. Search for Related Content PubMed Articles by Lou, G. Q. J. Articles by Huang, P. M. Agricola Articles by Lou, G. Q. J. Articles by Huang, P. M.

Interlayer Adsorption of Polymeric Hydroxy-Aluminosilicate Ions by Montmorillonite

Dep. of Soil Science, Univ. of Saskatchewan, Saskatoon, SK, S7N 0W0, Canada

*Corresponding author.

ABSTRACT

Adsorption of polymeric hydroxy-aluminosilicate (HAS) ions by montmorillonite and the formation of siliceous Al interlayers were studied. The interaction of HAS ions with Ca-montmorillonite exhibited a linear C-type adsorption isotherm within the range of solution Al and Si levels commonly found in acidic soils (10^–5 to 10^–4 M), suggesting a high capacity of Ca-montmorillonite to adsorb HAS ions from solution. A soluble Si concentration of >6.6 x 10^–5 M was required for the formation of HAS species and their adsorption by montmorillonite. The interlayer spacing (12.2–16.8 Å at 25°C and air dried) and the intensity of the major infrared bands of the adsorbed HAS ions (940 and 3500 cm^–1) in the HAS-montmorillonite complexes were found to increase with the increasing amount of HAS ions adsorbed, which further substantiated the interlayer adsorption mechanism for HAS-smectite interactions. The partial interlayering of HAS ions in Ca-montmorillonite resulted in the formation of HAS-clay complexes with basal spacings of 12Å (at 25°C, air dried). The data suggest that the partial hydroxy-interlayers of natural clays in acidic environments in temperate and subtropical regions may be siliceous in nature, depending on the Si level in soil solutions and other natural waters.

Contribution no. R737, from Saskatchewan Inst. of Pedology, Univ. of Saskatchewan. Research supported by the Natural Sciences and Engineering Research Council of Canada, Grant GP2383-Huang.

Received for publication April 29, 1993.

This article has been cited by other articles:

				U. K. Saha, C. Liu, L. M. Kozak, and P. M. Huang Kinetics of Selenite Adsorption on Hydroxyaluminum- and Hydroxyaluminosilicate-Montmorillonite Complexes Soil Sci. Soc. Am. J., July 1, 2004; 68(4): 1197 - 1209. [Abstract] [Full Text] [PDF]

				U. K. Saha, S. Taniguchi, and K. Sakurai Simultaneous Adsorption of Cadmium, Zinc, and Lead on Hydroxyaluminum- and Hydroxyaluminosilicate-Montmorillonite Complexes Soil Sci. Soc. Am. J., January 1, 2002; 66(1): 117 - 128. [Abstract] [Full Text] [PDF]

				U.K. Saha, S. Taniguchi, and K. Sakurai Adsorption Behavior of Cadmium, Zinc, and Lead on Hydroxyaluminum- and Hydroxyaluminosilicate-Montmorillonite Complexes Soil Sci. Soc. Am. J., May 1, 2001; 65(3): 694 - 703. [Abstract] [Full Text] [PDF]