How to use enzymes correctly in pulping and papermaking
Amylase and cellulase are used for fiber modification and deinking, which can promote ink removal and increase the whiteness of deinked pulp; improve water drainage and increase the softness of toilet paper.
Lignin modification/wastewater treatment
Laccase is used for lignin modification and wastewater treatment, which can increase the wet strength of mechanical pulp slurry and reduce the chromaticity and BOD/COD value of wastewater.
Hydrogen peroxide control
Catalase can monitor and optimize the amount of hydrogen peroxide in bleaching. After bleaching, adding catalase can degrade residual hydrogen peroxide.
Resin barrier control
In the process of papermaking with mechanical pulp, lipase is used for resin barrier control to increase paper strength, reduce paper defects, shorten downtime and reduce the number of cleanings of paper blankets and rollers, thereby improving paper quality and increasing production economic efficiency.
starch modification
Amylase enables paper mills to modify the original starch for surface coating and sizing on the spot, which is more economical and practical than buying commercial modified starch directly.
Using xylanase to promote ECF and TCF bleaching of kraft pulp can save bleaching agent and/or improve the whiteness of pulp after bleaching.
Fiber modification and deinking
