Capacity of selected Illinois soils to remove lead from aqueous solution

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Abstract
Lead is being added to the environment in automotive exhausts and as an industrial pollutant. To understand its fate in the environment, it is necessary that factors affecting the capacity of soils to sorb Fb be determined. The capacity of soils to sorb Fb from aqueous solutions vas measured for selected Illinois soils via column leaching experiments and adsorption isotherms. A regression equation was determined that predicted the capacity of a soil to sorb Fb based on its C.E.C., pH and soluble F level. Results of the regression analysis indicated that soil properties associated with increasing C.E.C., i.e. higher organic matter content, higher surface area, and higher clay content have a greater effect on Fb sorption than soil pH, and that soil pH has a greater effect than soluble P.