Refining Energy Reduction and Pulp Characteristic Modification of Alkaline Peroxide Mechanical Pulp (APMP) through Enzyme Application, 2008 Engineering, Pulping and Environmental Conference

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Eucalyptus wood chips were subjected to impregnation with various blends of novel fiber modifying enzymes prior to chemical pretreatment and two stages of refining using the PRC-APMP process. All of the wood chip impregnation and pulp processing was conducted at the Andritz Pilot Plant in Springfield, Ohio. When compared under constant chemical application and at a constant 350 mL CSF, an enzyme treatment was found to reduce specific refining energy by at least 25%. Several physical properties including bulk, tensile, and tear were monitored for the enzyme and the non-enzyme runs. Brightness of each of these pulps was also measured.