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| Effect of Enzyme Treatment on the Performance of Fiber Refining |
| Received:March 25, 2020 |
| DOI：10.11980/j.issn.0254-508X.2020.07.007 |
| Key Words:bleached hardwood pulp cellulase PFI refiner refining energy consumption fiber morphology |
| Fund Project:浙江省重点研发计划，项目名称“多功能新型艺术纸工艺技术开发与示范”（2019C03136）。 |
| Author Name | Affiliation | Postcode | | MA Chao | School of Environmental and Natural Resource,Zhejiang University of Science and Technology,Hangzhou,Zhejiang Province,310023 | 310023 | | QIU Supeng | School of Environmental and Natural Resource,Zhejiang University of Science and Technology,Hangzhou,Zhejiang Province,310023 | 310023 | | LI Yan | School of Environmental and Natural Resource,Zhejiang University of Science and Technology,Hangzhou,Zhejiang Province,310023 | 310023 | | ZHAO Huifang | School of Environmental and Natural Resource,Zhejiang University of Science and Technology,Hangzhou,Zhejiang Province,310023 | 310023 | | SHA Lizheng | School of Environmental and Natural Resource,Zhejiang University of Science and Technology,Hangzhou,Zhejiang Province,310023 | 310023 |
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| Abstract:Cellulase was used for the pretreatment of bleached hardwood pulp, and the effects of enzyme pretreatment on fiber morphology and refining energy consumption were studied, and the changes of fiber morphology after PFI refining were further analyzed, thus providing the guidance for the preparation of cellulose microfibril (CMF)via enzymatic beating pretreatment of hardwood pulp.The results showed that the enzyme pretreatment did not significantly change the fiber morphology, but the fibers were more easily cut and shredded after PFI refining, the degree of fiber swelling was increased, and when the dosage of enzyme was 8 U/g and the beating degree reached 50°SR and 68°SR, the content of kinked fibers of the pulp was decreased by 17.2 percentage points and 16.2 percentage points, the amount of fines was increased by 20.8 percentage points and 17.6 percentage points respectively compared with the control samples.In addition, enzyme pretreatment could significantly reduce the refining energy consumption of the pulp.When the dosage of enzyme was 8 U/g and the beating degree reached 50°SR and 68°SR, the refining energy consumption of the pulp was reduced by 50% and 33.3% respectively compared with the control samples. |
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