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 Google Scholar Google Scholar Articles by Mortensen, J. L. Search for Related Content PubMed Articles by Mortensen, J. L. Agricola Articles by Mortensen, J. L.

Adsorption of Hydrolyzed Polyacrylonitrile on Kaolinite: II. Effect of Solution Electrolytes¹

ABSTRACT

Adsorption experiments were conducted by mixing NaCl-kaolinite and C¹⁴-labelled hydrolyzed polyacrylonitrile (HPAN) in water solutions of various electrolytes. An increase in the concentration of electrolyte caused an increase in extent of HPAN adsorption, the effect apparently being due to reduction of electrostatic repulsion between HPAN and kaolinite and reduction in size of the HPAN coil. Divalent cations, especially the transition metals capable of being complexed, were more effective than univalent cations. Maximum adsorption took place in the presence of H⁺ ions.

Anions capable of complexing lattice aluminum and/or decomposing the clay crystal reduced adsorption of HPAN. There was some evidence of competition for adsorption sites.

¹ Journal Paper No. 88-58 of the Ohio Agr. Exp. Sta., published with permission of the Director as a collaborator under North Central Region cooperative project (NC-17) entitled, "Value of Organic Matter and Soil and Crop Management Practices in Improving Soil Structure and Productivity." Presented before Div. II, Soil Science Society of America, Aug. 6, 1958, at Lafayette, Ind.

² Associate Professor, Ohio Agr. Exp. Sta. and the Ohio State Univ.

Received for publication September 5, 1958. Accepted for publication October 23, 1958.