Cellulose Cleavage
Hydrolysis reactions break long molecular chains down into shorter monomeric units by applying targeted biological catalysts to secondary paper feedstocks. Enzymatic depolymerization targets specific chemical bonds within the carbohydrate matrix of recovered corrugated containers during repulping operations. Commercial enzyme preparations accelerate this molecular reduction without requiring extreme thermal input or harsh alkaline reagents.
Paper manufacturers employ these protein catalysts to lower slurry viscosity during high consistency stock preparation. Lowering the viscosity allows mills to increase machine speeds while reducing specific electrical energy consumption at the refiner.
Fiber Recovery
Slurry treatment restores mechanical strength properties to secondary fibers that suffered degradation during previous recycling loops. Shortened carbohydrate fragments recombine selectively during sheet formation to improve inter fiber bonding across the paper web. Papermakers monitor tensile strength retention and bursting resistance to verify that biological cleavage preserves structural integrity.
Excessive reaction times damage the cellulose backbone and reduce the tear strength required for heavy duty packaging grades. Coaters adjust drying cylinder temperatures immediately after the press section to arrest residual catalytic activity within the damp web.
Reagent Economy
Biological treatment cycles require precise control over process temperature and hydrogen ion concentration to maintain optimal enzyme kinetics. Dosing pumps deliver concentrated liquid formulations directly into the hydrapulper based on incoming raw material tonnage rates. Mill operators track chemical oxygen demand levels in white water loops to quantify soluble carbohydrate losses during the depolymerization stage.
Residual enzyme residues deactivate permanently during the high temperature drying phase without creating wastewater compliance burdens for the facility. Accurate cost accounting balances the expenditure on biological reagents against the measurable savings achieved through reduced refining energy.
