Synthesis of Carbon Material from Ureaformaldehyde Resin and Its Adsorption to Heavy Metal Ions

A novel adsorption carbon material ACUF was prepared using ureaformaldehye resin as the precursor carbonized in nitrogen atmosphere, its structure, morphology and surface properties were characterized, the adsorption properties of ACUF700 carbonized at 700℃ to metal ions were studied by a static method. The results show that ACUF retains a large number of active amine groups and has a developed microporous structure. The specific surface area of ACUF700 is 702.3 m2/g and pore size 2.044 nm, it has good adsorption property to Pb2+, Cu2+, Fe3+ and La3+, and the adsorption capacity reaches 39.7, 37.0, 13.0, and 10.5 mg/g, respectively. It is regenerated easily and possesses better reusability, and its recycled adsorption capacity has changed little after 5 times. The dynamics equation conforms to pseudo-second order model, and adsorption behavior can be described by Langmuir adsorption isotherm equation.