Mercury adsorption on soil was investigated at different ionic strengths using Ca(NO3)2 as a background electrolyte. Results fitted the Langmuir equation and the adsorption isotherms reached a plateau at higher equilibrium concentrations. Increasingionic strength decreased the sorption of mercury, due to the competition of Ca ions for the sorption sites in the soils. Theinfluence of ionic strength was related to the mechanisms of heavy metal sorption by the soil. These results can be of practical importance both in the agriculture and contaminated soils since the solubility of mercury in soils are strictly dependent on the adsorption and release process.
Effect of ionic strength on mercury adsorption on contaminated soil
Gianniantonio Petruzzelli;Francesca Pedron;Irene Rosellini;Eliana Tassi;Francesca Gorini;Beatrice Pezzarossa;Meri Barbafieri
2013
Abstract
Mercury adsorption on soil was investigated at different ionic strengths using Ca(NO3)2 as a background electrolyte. Results fitted the Langmuir equation and the adsorption isotherms reached a plateau at higher equilibrium concentrations. Increasingionic strength decreased the sorption of mercury, due to the competition of Ca ions for the sorption sites in the soils. Theinfluence of ionic strength was related to the mechanisms of heavy metal sorption by the soil. These results can be of practical importance both in the agriculture and contaminated soils since the solubility of mercury in soils are strictly dependent on the adsorption and release process.| File | Dimensione | Formato | |
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