Computer Science
Scientific paper
Jul 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982gecoa..46.1253b&link_type=abstract
Geochimica et Cosmochimica Acta, vol. 46, Issue 7, pp.1253-1265
Computer Science
16
Scientific paper
The adsorption of Cu, Pb, Zn, and Cd on goethite ( FeOOH) from NaNO 3 solutions and from major ion seawater was compared to assess the effect of the major ions of seawater (Na, Mg, Ca, K, Cl, and SO 4 ) on the adsorption behavior of the metals. Magnesium and sulphate are the principal seawater ions which enhance or inhibit adsorption relative to the inert system. Their effect, as determined from the site-binding model of Davis et al . (1978), was a combination of changing the electrostatic conditions at the interface and decreasing the available binding sites. The basic differences between the experimental system of major ion seawater and natural seawater were examined. It was concluded that: 1) although the experimental metal concentrations in major ion seawater were higher than those found in natural seawater, estimates of the binding energy of Cu, Zn, and Cd with FeOOH for natural seawater concentrations could be made from the data, 2) Cu, Pb, Zn, and Cd showed little or no competition for surface sites on goethite, and 3) the presence of carbonate, phosphate, and silicate had little or no effect on the adsorption of Zn and Cd on goethite.
Balistrieri Laurie S.
Murray James W.
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