Copper adsorption by decomposed granite soil and its effect on the breakthrough curve

摘要

This study is to examine the influence of the degree of weathering on the breakthrough curve of a copper contaminant plume when passing through decomposed granite soil. The copper concentration is measured in real time in soils by means of a fibre-optic sensor buried in the soil, operating in reflective- mode with yellow light, and the resulting breakthrough curve is compared with FEM analysis using the advection-dispersion equation. From the result, it is shown that the curve of severely weathered sample is characterized by the parameters such as R_d, α_L and D_L, which is dependent on the degree of weathering.