Abstract
The demand for sustainable polymers from biomass for various applications is increasing day by day. Because of wide availability of biopolymers in nature and its application, Bio-based material gained significant attention in the research community. Biomass consists of various biopolymers such as cellulose, lignin, hemicellulose, pectin, waxes, etc. Lignin is the most abundantly available aromatic biopolymer on the earth. Lignin is having a large and complex aromatic structure. Because of the presence of various functional groups and linkages, lignin gained significant attention in bio-refineries. Recently many intriguing strategies came into the picture that gives various aromatic and alkene products from the large structure of lignin. There are various routes like pyrolysis, hydrothermal liquefaction, catalytic conversion, and microwave-assisted thermal treatments which are used to get various value-added chemicals from lignin by breaking down the large structure of lignin. With the increasing attention in lignin breakdown, various challenges are also there which significantly affect the lignin defragmentation or breakdown. This chapter elaborately discusses the structural chemistry of lignin for a better understanding of lignin depolymerization, various treatment routes and reaction conditions for various products that can be harvested from lignin, and various challenges encountered in the depolymerization of lignin.
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Marakana, P.G., Dey, A., Saini, B. (2022). De-polymerization/De-fragmentation Aided Extraction of Value-Added Chemicals from Lignin. In: Nandabalan, Y.K., Garg, V.K., Labhsetwar, N.K., Singh, A. (eds) Zero Waste Biorefinery. Energy, Environment, and Sustainability. Springer, Singapore. https://doi.org/10.1007/978-981-16-8682-5_5
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