Preparation of hyperbranched polymers from oxidized lignin modified with triazine for removal of heavy metals

摘要: Abstract This work describes the development of hyperbranched polymer from eucalyptus Kraft lignin for removal heavy metals present in water. The versatile structure and reactive functional groups, such as phenolic hydroxyl groups have been explored. oxidation was prepared under acid conditions, triazine added order to incorporate nitrogen heteroatoms modify generating a polymer. Infrared spectroscopy, gel permeation chromatography, SEM-EDS Microscopy Physisorption N2 at 77 K were employed fot characterization adsorbents. It also made comparison amount metal using (KL), oxidized (OKL) cross-linked with (OKL-CC). These used adsorption nickel cadmium 20 ppm, pH 4 25 °C, an adsorbent 25 mg. By atomic absorption determined concentration metals. 96.1% OKL-CC, 92.48% OKL, while KL it 24.4%. OKL-CC 80.4%, OKL 68.8% 20.99%.