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| Study on Energy Saving and Improving the Strength Properties of Pulp by Biochemical-Mechanical Pulping of Poplar Wood |
| Received:June 20, 2025 Revised:July 02, 2025 |
| DOI：10.11980/j.issn.0254-508X.2026.02.002 |
| Key Words:poplar wood enzyme pretreatment pulping energy consumption fiber dissociation |
| Fund Project:国家重点研发计划“生物-原生浆”及功能化木质素制备关键技术产业示范”（2022YFC2105503）；中央财政林业科技推广示范资金项目（苏［2023］TG07）。 |
| Author Name | Affiliation | Postcode | | GENG Bo* | Jiangsu Key Lab of Biomass Energy and Material, Key Lab of Chemical Engineering of Forest Products, National Forestry and Grassland Administration, National Engineering Research Center of Low-Carbon Processing and Utilization of Forest Biomass, Institute of Chemical Industry of Forestry Products, CAF, Nanjing, Jiangsu Province,210042
Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing, Jiangsu Province, 210037 | 210037 | | LIANG Long | Jiangsu Key Lab of Biomass Energy and Material, Key Lab of Chemical Engineering of Forest Products, National Forestry and Grassland Administration, National Engineering Research Center of Low-Carbon Processing and Utilization of Forest Biomass, Institute of Chemical Industry of Forestry Products, CAF, Nanjing, Jiangsu Province,210042
Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing, Jiangsu Province, 210037 | 210037 | | SHEN Kuizhong* | Jiangsu Key Lab of Biomass Energy and Material, Key Lab of Chemical Engineering of Forest Products, National Forestry and Grassland Administration, National Engineering Research Center of Low-Carbon Processing and Utilization of Forest Biomass, Institute of Chemical Industry of Forestry Products, CAF, Nanjing, Jiangsu Province,210042
Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing, Jiangsu Province, 210037 | 210037 | | HAN Shanming | Jiangsu Key Lab of Biomass Energy and Material, Key Lab of Chemical Engineering of Forest Products, National Forestry and Grassland Administration, National Engineering Research Center of Low-Carbon Processing and Utilization of Forest Biomass, Institute of Chemical Industry of Forestry Products, CAF, Nanjing, Jiangsu Province,210042
Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing, Jiangsu Province, 210037 | 210037 | | WU Ting* | Jiangsu Key Lab of Biomass Energy and Material, Key Lab of Chemical Engineering of Forest Products, National Forestry and Grassland Administration, National Engineering Research Center of Low-Carbon Processing and Utilization of Forest Biomass, Institute of Chemical Industry of Forestry Products, CAF, Nanjing, Jiangsu Province,210042
Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing, Jiangsu Province, 210037 | 210037 | | SHAO Xinyi | Jiangsu Key Lab of Biomass Energy and Material, Key Lab of Chemical Engineering of Forest Products, National Forestry and Grassland Administration, National Engineering Research Center of Low-Carbon Processing and Utilization of Forest Biomass, Institute of Chemical Industry of Forestry Products, CAF, Nanjing, Jiangsu Province,210042
Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing, Jiangsu Province, 210037 | 210037 | | FANG Guigan | Jiangsu Key Lab of Biomass Energy and Material, Key Lab of Chemical Engineering of Forest Products, National Forestry and Grassland Administration, National Engineering Research Center of Low-Carbon Processing and Utilization of Forest Biomass, Institute of Chemical Industry of Forestry Products, CAF, Nanjing, Jiangsu Province,210042
Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing, Jiangsu Province, 210037 | 210037 |
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| Abstract:To explore more application routes of biological enzyme pretreatment in the chemical thermal grinding mechanical pulping process， three methods (xylanase， cellulase and composite enzyme agent) were used to pre-treat the poplar wood chips after extrusion. The effects of enzyme pretreatment on the energy consumption and pulp strength performance of chemical mechanical pulping were investigated. The results showed that treating the poplar wood chips after double helix extrusion with biological enzymes had a significant energy-saving effect. Compared with the samples without enzyme preparations， the composite enzyme agent pretreatment had the best energy-saving effect， with a 13.2% reduction in pulping energy consumption. The three pretreatment methods had different degrees of improvement on the strength performance of the pulp. At a free volume of 400 mL of CSF， the combined enzyme treatment could increase the burst strength index of the slurry from 0.840 kPa·m2/g to 1.02 kPa·m2/g， an increase of 21.4%； the xylanase treatment could raise the tensile strength index of the slurry from 19.3 N·m/g to 23.8 N·m/g， an increase of 23.3%. Field emission sacanning electron microscopy and transmission electron microscopy analysis indicated that after enzyme pretreatment， more fiber dissociation occurred between the S1 and S2 layer of the fiber cell wall during pulping， providing favorable conditions for subsequent pulping dissociation. During fine grinding of fibers， fiber swelling and external micro-fibering were more likely to occur. |
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