Determination of Chelating Capacity of Sugarcane Straw Lignin

W.F. Marcondes & A.R. Gonçalves
In recent years, the chelating agents have been extensively investigated because of their behavior as sequestering agents of metal ions present in aqueous solutions. One of the organic compounds that presents chelating capacity is lignin, which is found in large quantities in cell walls of plants. The aim of this work was to study the interaction between the sugarcane straw lignin and ions Cu2+ in ammonia hydroxide medium. The lignin used was obtained by Soda/AQ...