Microwave and ultrasonic pretreatment methods for lignocellulose
From the composition and structure of lignocellulose, it can be known that the main factors affecting the saccharification and decomposition of cellulose are the protective effect of lignin and hemicellulose, the crystallinity, degree of polymerization, effective specific surface area, internal pore size and distribution of cellulose, etc. It is quite difficult to directly saccharify, hydrolyze or biotransform cellulose. Therefore, no matter what process is adopted to decompose and utilize cellulose, the cellulose raw material must be pretreated first, the purpose of which is to reduce the degree of polymerization and crystallinity of cellulose, destroy the bonding layer of lignin and hemicellulose, and remove lignin. element to increase the effective specific surface area. Now let's talk about the methods of microwave and ultrasonic pretreatment of lignocellulose.
Microwave is a new energy-saving heating technology without temperature gradient, which can be used in dyeing industry to improve the dyeing performance of lignocellulose. The application of ultrasound in the chemical industry is also developing rapidly. Under the condition of ultra-high pressure, in the process of pretreating biomass (such as crop waste) with organic acid, corn stover was irradiated with microwave (4.9W/g), and then hydrolyzed with enzyme at 400℃, pH value of 5.0 for 72h, and the saccharification rate was as high as 98%
Follow us on:
Founded in 2003, LVJIAN is a company that researches, develops and produces high quality natural organic fibers. With the mission of "create value-added products that are conducive to social development, economical and environmentally friendly",View More+
LVJIAN has developed the "green" function of plant materials with advanced fiber technology and applied it to construction chemicals, road construction, organic filter aid, animal nutrition, pet litter and other industries.