Advances in lignin valorization towards bio-based chemicals and fuels: Lignin biorefinery
Journal
Bioresource Technology
Journal Volume
291
Pages
121878
Date Issued
2019
Author(s)
Abstract
Lignin is one of the most promising renewable sources for aromatic hydrocarbons, while effective depolymerization towards its constituent monomers is a particular challenge because of the structural complexity and stability. Intensive research efforts have been directed towards exploiting effective valorization of lignin for the production of bio-based platform chemicals and fuels. The present contribution aims to provide a critical review of key advances in the identification of exact lignin structure subjected to various fractionation technologies and demonstrate the key roles of lignin structures in depolymerization for unique functionalized products. Various technologies (e.g., thermocatalytic approaches, photocatalytic conversion, and mechanochemical depolymerization) are reviewed and evaluated in terms of feasibility and potential for further upgrading. Overall, advances in pristine lignin structure analysis and conversion technologies can facilitate recovery and subsequent utilization of lignin towards tailored commodity chemicals and fungible fuels. ? 2019 Elsevier Ltd
Subjects
Aromatic hydrocarbons; Chemicals; Fuels; Sustainable development; Waste management; Bio-based chemicals; Circular bioeconomy; Commodity chemicals; Conversion technology; Intensive research; Platform chemicals; Structural complexity; Various technologies; Lignin; fuel; lignin; lignin; aromatic hydrocarbon; catalysis; catalyst; chemical reaction; commodity; lignin; recycling; sustainable development; waste management; depolymerization; feasibility study; fractionation; gasification; hydrothermal liquefaction; liquefaction; microwave radiation; photocatalysis; priority journal; pyrolysis; structure activity relation; structure analysis; chemistry; polymerization; Chemicals; Conversion; Depolymerization; Fractionation; Fuels; Stability; Waste Management; Lignin; Polymerization
SDGs
Other Subjects
Aromatic hydrocarbons; Chemicals; Fuels; Sustainable development; Waste management; Bio-based chemicals; Circular bioeconomy; Commodity chemicals; Conversion technology; Intensive research; Platform chemicals; Structural complexity; Various technologies; Lignin; fuel; lignin; lignin; aromatic hydrocarbon; catalysis; catalyst; chemical reaction; commodity; lignin; recycling; sustainable development; waste management; depolymerization; feasibility study; fractionation; gasification; hydrothermal liquefaction; liquefaction; microwave radiation; photocatalysis; priority journal; pyrolysis; structure activity relation; structure analysis; chemistry; polymerization; Chemicals; Conversion; Depolymerization; Fractionation; Fuels; Stability; Waste Management; Lignin; Polymerization
Type
review