Adsorptive removal of Cu(II) and Ni(II) ions from aqueous media by chemical immobilization of three different aldehydes

► The isotherm parameters were found from the Langmuir and Freundlich equations. ► The characteristics of metal bindings were interpreted by using Scatchard plot graphs. ► The functionalized new organic groups on silica structure indicate a large potentiality of these materials as a support structure.