A Suggested Mechanism for Sulfate Adsorption by Soils
- 1 May 1963
- journal article
- research article
- Published by Wiley in Soil Science Society of America Journal
- Vol. 27 (3) , 281-283
- https://doi.org/10.2136/sssaj1963.03615995002700030020x
Abstract
Equilibrium experiments with SO4‐Cl mixtures suggested that the quantity of anions held by a Cecil subsoil increases with time. Further experiments with K2SO4 confirmed the “time” effect on two Cecil subsoils and on Fe‐treated Georgia kaolinite. On the basis of the time effect and other observations made on SO42‐ adsorption a suggested mechanism is proposed. The mechanism envisions the replacement of OH‐ ions by SO42‐ and the hydrolysis of Al (in the presence of salt) to form H+ ions. Thus, the OH‐ ions are neutralized by H+ ions and anion adsorption proceeds apace.Keywords
Funding Information
- National Science Foundation
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