INVESTIGATION OF VARIOUS METHODS OF EXTRACTING LIGNIN FROM TREE BARK

Abstract

This study explores various methods for extracting lignin from tree bark, a significant byproduct of the forestry and paper industries. The research aims to identify efficient and sustainable techniques for lignin extraction, which has potential applications in biopolymers, energy production, and as a natural binder. We evaluated several extraction methods, including solvent extraction, steam explosion, and enzymatic hydrolysis, focusing on yield, purity, and environmental impact. The findings reveal substantial differences in efficacy and sustainability among the methods. Solvent extraction demonstrated high lignin purity but raised environmental concerns. Steam explosion offered a balance between yield and eco-friendliness, while enzymatic hydrolysis emerged as the most sustainable, albeit with lower yields. This study contributes to the growing body of knowledge on lignin extraction and its potential industrial applications, highlighting the need for further research in optimizing these methods for commercial use. Keywords: lignin, extraction, tree bark, Solvent, Steam explosion, biopolymers.