It can produce about 6x1014t per year. As a filling and bonding material, it can strengthen the phase between plant cellulose
Interaction is also a component that must be removed for large-scale extraction and utilization of plant cellulose. Relative to other days
However, macromolecules such as cellulose, hemicellulose and lignin lack regularity and order between repeating units,
With more complex composition and chemical structure, it is the most difficult to understand and use natural polymer. woodiness
It mainly comes from paper industry wastewater and agricultural and forestry waste. It is affected by fiber raw materials, pulping technology and extraction methods
Due to the influence of factors such as method, the physical and chemical properties vary greatly, which limits its high-value profit in industry
Use.
Since the 20th century, with the gradual deepening of lignin research, people have a new recognition of its importance Knowledge. Lignin is an environment-friendly renewable biomass resource, which is synthesized by physical blending or sulfonation and hydroxymethylWood can be improved by chemical reaction modification such as chemical reaction, phenolization, hydrogenolysis, propoxylation, esterification, amination and graft copolymerization
Quality is widely used in industry, agriculture, construction, mining and other fields.
The adsorption and slow release properties of lignin can better maintain the effectiveness of chemical fertilizer and make it release slowly
It is a good slow-release material for organic compound fertilizer. The development and utilization of lignin in papermaking black liquor
The utilization of resources not only controls the pollution to the environment, but also solves the loss and pollution of chemical fertilizer, and can reduce the pollution Low agricultural production costs provide a new product.
