Influence of Citrate on Adsorption of Zinc in Soils

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. ASCE.

published proceedings

• Journal of Environmental Engineering

author list (cited authors)

• Schwab, A. P., He, Y., & Banks, M. K.

citation count

• 9

complete list of authors

• Schwab, Arthur Paul||He, Yinghong||Banks, Margaret Katherine

publication date

• October 2004

publisher

• American Society of Civil Engineers (ASCE)  Publisher

published in

• Journal of Environmental Engineering, ASCE  Journal

Digital Object Identifier (DOI)

• 10.1061/(asce)0733-9372(2004)130:10(1180)

start page

• 1180

end page

• 1187

volume

• 130

issue

• 10

URL

• http://dx.doi.org/10.1061/(ASCE)0733-9372(2004)130:10(1180)