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| Study on the Bleaching Performance of Kraft Softwood Pulp Using Active Electrolyzed Water at Room-temperature |
| Received:February 02, 2026 Revised:March 31, 2026 |
| DOI：10.11980/j.issn.0254-508X.2026.06.012 |
| Key Words:active electrolyzed water kraft softwood pulp room temperature bleaching |
| Author Name | Affiliation | Postcode | | XU Mengya* | 1National Key Lab of Bio-based Fiber Materials, Tianjin Key Lab of Pulp and Paper, China Light Industry Key Lab of Paper & Biorefining, China Textile Industry Key Lab of High-performance Fiber Wet-process Nonwoven Materials, Tianjin University of Science and Technology, Tianjin, 300457 | 300457 | | CHAI Xiaosa | 1National Key Lab of Bio-based Fiber Materials, Tianjin Key Lab of Pulp and Paper, China Light Industry Key Lab of Paper & Biorefining, China Textile Industry Key Lab of High-performance Fiber Wet-process Nonwoven Materials, Tianjin University of Science and Technology, Tianjin, 300457 | 300457 | | ZHANG Cuiqian | 1National Key Lab of Bio-based Fiber Materials, Tianjin Key Lab of Pulp and Paper, China Light Industry Key Lab of Paper & Biorefining, China Textile Industry Key Lab of High-performance Fiber Wet-process Nonwoven Materials, Tianjin University of Science and Technology, Tianjin, 300457 | 300457 | | ZHAO Jin | 2School of Textile Science and Engineering, Tiangong University, Tianjin, 300387 | 300387 | | WANG Gaosheng | 1National Key Lab of Bio-based Fiber Materials, Tianjin Key Lab of Pulp and Paper, China Light Industry Key Lab of Paper & Biorefining, China Textile Industry Key Lab of High-performance Fiber Wet-process Nonwoven Materials, Tianjin University of Science and Technology, Tianjin, 300457 | 300457 | | LIU Zehua* | 1National Key Lab of Bio-based Fiber Materials, Tianjin Key Lab of Pulp and Paper, China Light Industry Key Lab of Paper & Biorefining, China Textile Industry Key Lab of High-performance Fiber Wet-process Nonwoven Materials, Tianjin University of Science and Technology, Tianjin, 300457 | 300457 |
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Abstract:In this study， the bleaching performance of kraft softwood pulp with active electrolyzed water at room temperature was investigated， and the effects of process parameters such as pulp-to-liquid ratio and bleaching time on pulp properties including CIE whiteness， Kappa value， polymerization degree of cellulose， and mechanical strength of pulp were analyzed. The results showed that the whiteness of kraft softwood pulp could be increased from 22.7% to 71.3%， with a Kappa value of 2.95， polymerization degree of cellulose of 918， and good mechanical properties under static conditions at room temperature for 12 h. Activated electrolyzed water was colorless， odorless， mild， and non-irritating， with a neutral pH maintained both before and after use. Comprehensive test results indicated that active electrolyzed water contained active oxygen species such as superoxide radicals（·O2-![]() ![]() ）， which could react with the lignin in the pulp effectively， reduced the lignin content of pulp， disrupt the chromophore structure， and improved the whiteness of pulp. |
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