Influence of Citrate on Adsorption of Zinc in Soils
Publication: Journal of Environmental Engineering
Volume 130, Issue 10
Abstract
Adsorption of zinc to two soils was quantified in the presence of citrate ranging in concentration from 0 to 10 mM/L. For both soils, Zn adsorption increased with increasing citrate up to a concentration of 2mM/L. With increasing citrate concentrations between 2 and 10 mM/L, Zn adsorption increased in one soil (pH 4.8) but decreased in the second (pH 5.8). Adsorption of a Zn-citrate complex is key to the Zn adsorption in both soils. The soil with the higher pH appears to have a significantly lower adsorption capacity for the complex than the soil with pH 4.8. Activity-based adsorption modeling supports these experimental observations.
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Information & Authors
Information
Published In
Journal of Environmental Engineering
Volume 130 • Issue 10 • October 2004
Pages: 1180 - 1187
Copyright
Copyright © 2004 ASCE.
History
Published online: Oct 1, 2004
Published in print: Oct 2004
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