中性纤维素酶预处理改善针叶木打浆
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摘要
中性纤维素酶预处理被用来改善针叶木浆打浆性能。结果显示:中性纤维素酶预处理是一种有效的提高纸浆滤水性能和节省打浆能耗的方法,中性纤维素酶预处理是通过改善纤维的吸水润胀来实现酶促打浆的,在低酶用量的情况下,经过酶预处理后打浆,相对于空白样,纸浆的打浆度有了大幅的提升;在酶用量2.5 IU·g~(-1),目标打浆度40°SR时,可节约约47%的能耗,并且在低酶用量下,纸浆的物理性能也得到了改善。
Neutral cellulase pretreatment to improve refining performance of bleached softwood pulp is investigated in this paper. The cellulase pretreatment is proved to be an efficient method to develop the drainability of the pulp and reduce the energy consumption in the refining process. The result shows that cellulase treatment improves the swelling of fiber and is beneficial to the refining process. At low cellulsae dosage,pulp freeness increases soon after pretreatment with cellulsae. When the cellulase dosage using is 2.5IU/g,about 47% of energy are saved compared with the control. And at low dosage of cellulsae can develop the mechanical properties of the pulp.
Neutral cellulase pretreatment to improve refining performance of bleached softwood pulp is investigated in this paper. The cellulase pretreatment is proved to be an efficient method to develop the drainability of the pulp and reduce the energy consumption in the refining process. The result shows that cellulase treatment improves the swelling of fiber and is beneficial to the refining process. At low cellulsae dosage,pulp freeness increases soon after pretreatment with cellulsae. When the cellulase dosage using is 2.5IU/g,about 47% of energy are saved compared with the control. And at low dosage of cellulsae can develop the mechanical properties of the pulp.
引文
[1]Bajpai P,Mishra S P,Mishra O P,et al.Use of enzymes for reduction in refining energy-laboratory studies[J].Tappi J,2006,5(11):25-32.
[2]Tomme P,Warren RAJ,Gilkes N R.Cellulose hydrolysis by bacteria and fungi[J].Adv.Microbial Physiol.,1995,37:1-81.
[3]Stork G,Pereira H,Wood T M,et al.Upgrading recycled pulps using enzymatic treatment[J].Tappi J,1995,78:79-88.
[4]Du M,Li X-P,Li W-G.Influences of Bleached Softwood Pulp Pretreated with Endo-Cellulase on Fiber Surface Properties and Aggregation Structure[J].,Advanced Materials Research,2011,391-392:692-696.
[5]Sarkar J M,Cosper D R,Harting E J.Applying enzymes and polymers to enhance the freeness of recycled fiber[J].Tappi Journal,1995,78(2):89-95.
[6]Kim H-J,Jo B-M,Lee S-H.Potential for energy saving in refining of cellulasetreated kraft pulp[J].Journal of Industrial and Engineering Chemistry,2006,12(4):578-583.
[7]Zhang Z-J,Hu H-R.Enzymatic treatment for improving refinability of bleached Simao pine kraft pulp[J].China Pulp and Paper,2008,27(12):1-5.
[8]Gil N,Gil C,Amaral M E,et al.Use of enzymes to improve the refining of a bleached Eucalyptus globulus kraft pulp[J].Biochemical Engineering Journal,2009,46(2):89-95.
[9]Bhardwaj N K,Bajpai P,Bajpai P K.Use of enzymes in modification of fibres for improved beatability[J].Journal of Biotechnology,1996,51(1):21-26.
[10]Kenealy W R,Jeffries T W.Enzyme processes for pulp and paper:A review of recent developments[M/OL].Wood Deterioration and Preservation,US,2003:210-239.http://www.fpl.fs.fed.us/documnts/pdf2003/kenea03a.pdf.
[11]Kasushi,Kamaya.Role of endoglucanase in enzymatic modification of bleached kraft pulp[J].Journal of Fermentation and Bioengineering,1996,82(6):549-553.
[12]Pala H,Mota M,Gama F M.Enzymatic modification of paper fibers[J].Biocatalysts and Biotransformation,2002,20(5):
[13]李武光,李新平,杜敏.木聚糖酶对漂白针叶木浆改性的研究[J].造纸科学与技术,2009,28(4):20-22.
[2]Tomme P,Warren RAJ,Gilkes N R.Cellulose hydrolysis by bacteria and fungi[J].Adv.Microbial Physiol.,1995,37:1-81.
[3]Stork G,Pereira H,Wood T M,et al.Upgrading recycled pulps using enzymatic treatment[J].Tappi J,1995,78:79-88.
[4]Du M,Li X-P,Li W-G.Influences of Bleached Softwood Pulp Pretreated with Endo-Cellulase on Fiber Surface Properties and Aggregation Structure[J].,Advanced Materials Research,2011,391-392:692-696.
[5]Sarkar J M,Cosper D R,Harting E J.Applying enzymes and polymers to enhance the freeness of recycled fiber[J].Tappi Journal,1995,78(2):89-95.
[6]Kim H-J,Jo B-M,Lee S-H.Potential for energy saving in refining of cellulasetreated kraft pulp[J].Journal of Industrial and Engineering Chemistry,2006,12(4):578-583.
[7]Zhang Z-J,Hu H-R.Enzymatic treatment for improving refinability of bleached Simao pine kraft pulp[J].China Pulp and Paper,2008,27(12):1-5.
[8]Gil N,Gil C,Amaral M E,et al.Use of enzymes to improve the refining of a bleached Eucalyptus globulus kraft pulp[J].Biochemical Engineering Journal,2009,46(2):89-95.
[9]Bhardwaj N K,Bajpai P,Bajpai P K.Use of enzymes in modification of fibres for improved beatability[J].Journal of Biotechnology,1996,51(1):21-26.
[10]Kenealy W R,Jeffries T W.Enzyme processes for pulp and paper:A review of recent developments[M/OL].Wood Deterioration and Preservation,US,2003:210-239.http://www.fpl.fs.fed.us/documnts/pdf2003/kenea03a.pdf.
[11]Kasushi,Kamaya.Role of endoglucanase in enzymatic modification of bleached kraft pulp[J].Journal of Fermentation and Bioengineering,1996,82(6):549-553.
[12]Pala H,Mota M,Gama F M.Enzymatic modification of paper fibers[J].Biocatalysts and Biotransformation,2002,20(5):
[13]李武光,李新平,杜敏.木聚糖酶对漂白针叶木浆改性的研究[J].造纸科学与技术,2009,28(4):20-22.