Synthesis and characterization of a new series of cross-linked (phenol, formaldehyde, alkyldiamine) terpolymers for the removal of toxic metal ions from wastewater

摘要

Cross-linked terpolymers made up of phenol, diaminoalkane and formaldehyde monomeric units. The cross-linked terpolymers are synthesized via a Mannich mechanism in n-heptane, characterized with multiple spectroscopic techniques, scanning electron microscopy and powder X-ray diffraction, and are also investigated for their Pb²⁺ adsorption capacity and thermodynamic properties. A method of removing Pb²⁺ ions from an aqueous solution or a wastewater sample with these cross-linked terpolymers is also described.