Remediation Analysis of Azo and Anthraquinone Dye by Modified Low Sulphonated Lignin

Abstract

Industrial wastes mostly consist of dyes and pigments which are known to cause detrimental effects on environmental and human health. Various techniques can be used for the removal of dyes, among them adsorption is by far the simplest and inexpensive one. Lignocellulosic biomass which consists of the second most abundant lignin is now increasingly being explored as an adsorbent due to its structural properties. In this study, the commercial low sulfonated lignin was modified by Mannich reaction i.e. amination and was employed in the adsorption of Reactive Blue 19 and Acid orange 10. Structural characterization like FTIR, SEM, TGA substantiates the presence of the amine group. From batch adsorption studies, almost >80% removal efficiency was found for the azo dye. Docking analysis was done to understand the active site interactions. © 2022 World Research Association. All rights reserved.