The addition of urban waste compost to the soil
increased the Cu adsorption capacity. The cu retained by
the soils cannot be removed passing an electrolyte solution
through the soil column, but it is removed to a great extent
by passing a glyphosate solution. This is probably due to
the formation of very strong Cu-glyphosate complexes in
solution that have lower tendency to be adsorbed on the
soils than free cu. It indicates the high extracting power of
this herbicide showing its potential in remediation of metal
contaminated soils