Читать книгу Handbook of Biomass Valorization for Industrial Applications - Группа авторов - Страница 41

By pulping process, the paper manufacturing industries produce about fifty million tons of lignocellulosic biomass. Cracker states that pulping typically extracts lignin from wood pulp to leave only cellulose for paper processing. Just 2% of the remaining lignin, however, is processed into useful materials, with the remainder being burned or going to landfill as low-grade fuels. A breakthrough in the heterogeneous catalytic oxidative depolymerization of lignin using gold nanoparticles aided by lithium aluminum layered double hydrolysis has been documented by Crocke’s team. The group obtained aromatic monomers such as vanillin, vanillic acid and syringaldehyde of low molecular weight by targeting rich β-O-4 linkage within lignin. In the food and fragrance industry, these monomers are usually used [89].

Opportunities for development of lignocellulose to bio-aromatics

 New environmental innovations (towards bioeconomy)

 Reduction of manufacturing process transportation footprint

 Chemicals and materials innovation (safer, performance-based products and through disruptive enabling process technologies)

 The transition to bioeconomy is driven by economics and culture.

 For lignin-based goods, physicochemical variables promise a future.

 Presence of rings of aromas (stability, good mechanical properties)

 Strong viscoelastic and rheological properties

 Strong capability for film-forming

 Compatibility for a broad variety of synthetic chemical goods

 The scale of small objects.