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

这项工作描述了从桉木硫酸盐木质素中开发超支化聚合物，以去除水中的重金属。已经研究了木质素的通用结构和反应性官能团，例如酚羟基。在酸性条件下制备卡夫木质素的氧化反应，添加三嗪以结合氮杂原子并修饰木质素结构，从而生成超支化聚合物。红外光谱，凝胶渗透色谱，SEM-EDS显微镜和N _2的物理吸附在77 K下使用吸附剂进行表征。还比较了使用硫酸盐木质素（KL），氧化的硫酸盐木质素（OKL）和氧化的硫酸盐木质素与三嗪交联的去除量（OKL-CC）。将它们用于以20 ppm，pH 4和25°C吸附镍和镉，吸附量为25 mg。通过原子吸收确定金属的浓度。OKL-CC的镉去除率为96.1％，OKL的去除率为92.48％，而KL的去除率为24.4％。OKL-CC的镍去除率为80.4％，OKL为68.8％，而KL为20.99％。