SE511229C2 - Förfarande för användning av enzymer vid framställning och blekning av pappersmassa - Google Patents
Förfarande för användning av enzymer vid framställning och blekning av pappersmassaInfo
- Publication number
- SE511229C2 SE511229C2 SE9201441A SE9201441A SE511229C2 SE 511229 C2 SE511229 C2 SE 511229C2 SE 9201441 A SE9201441 A SE 9201441A SE 9201441 A SE9201441 A SE 9201441A SE 511229 C2 SE511229 C2 SE 511229C2
- Authority
- SE
- Sweden
- Prior art keywords
- pulp
- enzyme
- mass
- xylanase
- process according
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 56
- 108090000790 Enzymes Proteins 0.000 title claims description 125
- 102000004190 Enzymes Human genes 0.000 title claims description 125
- 230000008569 process Effects 0.000 title claims description 36
- 238000004061 bleaching Methods 0.000 title description 46
- 238000004519 manufacturing process Methods 0.000 title description 9
- 108010059892 Cellulase Proteins 0.000 claims abstract description 27
- 229940106157 cellulase Drugs 0.000 claims abstract description 25
- 108010002430 hemicellulase Proteins 0.000 claims abstract description 19
- 238000002360 preparation method Methods 0.000 claims abstract description 19
- 229940088598 enzyme Drugs 0.000 claims description 124
- 230000000694 effects Effects 0.000 claims description 51
- 101710121765 Endo-1,4-beta-xylanase Proteins 0.000 claims description 43
- 239000002253 acid Substances 0.000 claims description 27
- 239000000725 suspension Substances 0.000 claims description 23
- 239000002023 wood Substances 0.000 claims description 16
- 239000007788 liquid Substances 0.000 claims description 11
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 229910052760 oxygen Inorganic materials 0.000 claims description 5
- 239000001301 oxygen Substances 0.000 claims description 5
- 108010055059 beta-Mannosidase Proteins 0.000 claims description 4
- 238000009835 boiling Methods 0.000 claims description 4
- 238000010411 cooking Methods 0.000 claims description 4
- 102100032487 Beta-mannosidase Human genes 0.000 claims description 3
- 108010001817 Endo-1,4-beta Xylanases Proteins 0.000 claims description 2
- 108010038658 exo-1,4-beta-D-xylosidase Proteins 0.000 claims description 2
- 229920001131 Pulp (paper) Polymers 0.000 abstract 2
- 238000011282 treatment Methods 0.000 description 36
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Inorganic materials [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 35
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 24
- 229920005610 lignin Polymers 0.000 description 23
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 description 22
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 20
- 150000004823 xylans Chemical class 0.000 description 19
- 239000000460 chlorine Substances 0.000 description 18
- 229910052801 chlorine Inorganic materials 0.000 description 18
- 229910021653 sulphate ion Inorganic materials 0.000 description 18
- 229920001221 xylan Polymers 0.000 description 18
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 17
- 239000000758 substrate Substances 0.000 description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 239000004155 Chlorine dioxide Substances 0.000 description 11
- 235000019398 chlorine dioxide Nutrition 0.000 description 11
- 239000000126 substance Substances 0.000 description 9
- 239000007853 buffer solution Substances 0.000 description 8
- 239000000523 sample Substances 0.000 description 8
- 239000000243 solution Substances 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 7
- 239000000835 fiber Substances 0.000 description 7
- 230000007062 hydrolysis Effects 0.000 description 7
- 238000006460 hydrolysis reaction Methods 0.000 description 7
- 230000001965 increasing effect Effects 0.000 description 7
- 102000004169 proteins and genes Human genes 0.000 description 7
- 108090000623 proteins and genes Proteins 0.000 description 7
- 238000003860 storage Methods 0.000 description 7
- 238000005406 washing Methods 0.000 description 7
- SRBFZHDQGSBBOR-IOVATXLUSA-N D-xylopyranose Chemical compound O[C@@H]1COC(O)[C@H](O)[C@H]1O SRBFZHDQGSBBOR-IOVATXLUSA-N 0.000 description 6
- 229920002488 Hemicellulose Polymers 0.000 description 6
- 230000009931 harmful effect Effects 0.000 description 6
- 239000000047 product Substances 0.000 description 6
- 241000499912 Trichoderma reesei Species 0.000 description 5
- 239000008367 deionised water Substances 0.000 description 5
- 229910021641 deionized water Inorganic materials 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 239000007844 bleaching agent Substances 0.000 description 4
- 229940079919 digestives enzyme preparation Drugs 0.000 description 4
- 238000006911 enzymatic reaction Methods 0.000 description 4
- 150000004045 organic chlorine compounds Chemical class 0.000 description 4
- 239000002351 wastewater Substances 0.000 description 4
- 241000196324 Embryophyta Species 0.000 description 3
- 150000007513 acids Chemical class 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- PYMYPHUHKUWMLA-UHFFFAOYSA-N arabinose Natural products OCC(O)C(O)C(O)C=O PYMYPHUHKUWMLA-UHFFFAOYSA-N 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- SRBFZHDQGSBBOR-UHFFFAOYSA-N beta-D-Pyranose-Lyxose Natural products OC1COC(O)C(O)C1O SRBFZHDQGSBBOR-UHFFFAOYSA-N 0.000 description 3
- 239000001913 cellulose Substances 0.000 description 3
- 229920002678 cellulose Polymers 0.000 description 3
- 238000005660 chlorination reaction Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 239000000499 gel Substances 0.000 description 3
- 239000011121 hardwood Substances 0.000 description 3
- 238000001155 isoelectric focusing Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000001603 reducing effect Effects 0.000 description 3
- 239000011122 softwood Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- LUEWUZLMQUOBSB-FSKGGBMCSA-N (2s,3s,4s,5s,6r)-2-[(2r,3s,4r,5r,6s)-6-[(2r,3s,4r,5s,6s)-4,5-dihydroxy-2-(hydroxymethyl)-6-[(2r,4r,5s,6r)-4,5,6-trihydroxy-2-(hydroxymethyl)oxan-3-yl]oxyoxan-3-yl]oxy-4,5-dihydroxy-2-(hydroxymethyl)oxan-3-yl]oxy-6-(hydroxymethyl)oxane-3,4,5-triol Chemical compound O[C@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1O[C@@H]1[C@@H](CO)O[C@@H](O[C@@H]2[C@H](O[C@@H](OC3[C@H](O[C@@H](O)[C@@H](O)[C@H]3O)CO)[C@@H](O)[C@H]2O)CO)[C@H](O)[C@H]1O LUEWUZLMQUOBSB-FSKGGBMCSA-N 0.000 description 2
- 241000228212 Aspergillus Species 0.000 description 2
- 241001513093 Aspergillus awamori Species 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 229920002581 Glucomannan Polymers 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 241000218652 Larix Species 0.000 description 2
- 235000005590 Larix decidua Nutrition 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 241000277331 Salmonidae Species 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 125000000089 arabinosyl group Chemical group C1([C@@H](O)[C@H](O)[C@H](O)CO1)* 0.000 description 2
- 125000003118 aryl group Chemical group 0.000 description 2
- 238000003556 assay Methods 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 239000000872 buffer Substances 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 2
- 239000007979 citrate buffer Substances 0.000 description 2
- 230000000593 degrading effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002255 enzymatic effect Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000012065 filter cake Substances 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 229940046240 glucomannan Drugs 0.000 description 2
- 150000004820 halides Chemical class 0.000 description 2
- 230000003301 hydrolyzing effect Effects 0.000 description 2
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical compound Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 description 2
- 230000002779 inactivation Effects 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 238000009533 lab test Methods 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000001139 pH measurement Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 231100000167 toxic agent Toxicity 0.000 description 2
- JNIQBPHJIAOMQU-FSIIMWSLSA-N (2s,3s,4s,5r)-2,3,4,5-tetrahydroxy-6-oxoheptanoic acid Chemical group CC(=O)[C@H](O)[C@@H](O)[C@H](O)[C@H](O)C(O)=O JNIQBPHJIAOMQU-FSIIMWSLSA-N 0.000 description 1
- UHPMCKVQTMMPCG-UHFFFAOYSA-N 5,8-dihydroxy-2-methoxy-6-methyl-7-(2-oxopropyl)naphthalene-1,4-dione Chemical compound CC1=C(CC(C)=O)C(O)=C2C(=O)C(OC)=CC(=O)C2=C1O UHPMCKVQTMMPCG-UHFFFAOYSA-N 0.000 description 1
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- 244000075850 Avena orientalis Species 0.000 description 1
- 235000007319 Avena orientalis Nutrition 0.000 description 1
- 241000193830 Bacillus <bacterium> Species 0.000 description 1
- 235000018185 Betula X alpestris Nutrition 0.000 description 1
- 235000018212 Betula X uliginosa Nutrition 0.000 description 1
- 101100283604 Caenorhabditis elegans pigk-1 gene Proteins 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- 240000000731 Fagus sylvatica Species 0.000 description 1
- 235000010099 Fagus sylvatica Nutrition 0.000 description 1
- 241000223218 Fusarium Species 0.000 description 1
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 1
- NGWKGSCSHDHHAJ-YPFQVHCOSA-N Liquoric acid Chemical compound C1C[C@H](O)C(C)(C)C2CC[C@@]3(C)[C@]4(C)C[C@H]5O[C@@H]([C@](C6)(C)C(O)=O)C[C@@]5(C)[C@@H]6C4=CC(=O)C3[C@]21C NGWKGSCSHDHHAJ-YPFQVHCOSA-N 0.000 description 1
- 229920000057 Mannan Polymers 0.000 description 1
- 241001508691 Martes zibellina Species 0.000 description 1
- 241001085205 Prenanthella exigua Species 0.000 description 1
- 241000220317 Rosa Species 0.000 description 1
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 description 1
- 239000005708 Sodium hypochlorite Substances 0.000 description 1
- 241000187134 Streptomyces olivochromogenes Species 0.000 description 1
- 241000223259 Trichoderma Species 0.000 description 1
- FRYDSOYOHWGSMD-UHFFFAOYSA-N [C].O Chemical class [C].O FRYDSOYOHWGSMD-UHFFFAOYSA-N 0.000 description 1
- 125000000218 acetic acid group Chemical group C(C)(=O)* 0.000 description 1
- 238000007259 addition reaction Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 239000012736 aqueous medium Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000007900 aqueous suspension Substances 0.000 description 1
- 235000020054 awamori Nutrition 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005282 brightening Methods 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 150000001804 chlorine Chemical class 0.000 description 1
- 229910001902 chlorine oxide Inorganic materials 0.000 description 1
- MAYPHUUCLRDEAZ-UHFFFAOYSA-N chlorine peroxide Chemical compound ClOOCl MAYPHUUCLRDEAZ-UHFFFAOYSA-N 0.000 description 1
- 125000001309 chloro group Chemical group Cl* 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000001010 compromised effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000013068 control sample Substances 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000009088 enzymatic function Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000008103 glucose Substances 0.000 description 1
- 229940059442 hemicellulase Drugs 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 125000003010 ionic group Chemical group 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- 239000002609 medium Substances 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 239000006225 natural substrate Substances 0.000 description 1
- 230000018791 negative regulation of catalytic activity Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000010979 pH adjustment Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229920001282 polysaccharide Polymers 0.000 description 1
- 239000005017 polysaccharide Substances 0.000 description 1
- 150000004804 polysaccharides Chemical class 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000004076 pulp bleaching Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 description 1
- 239000004289 sodium hydrogen sulphite Substances 0.000 description 1
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 1
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
- D21C5/005—Treatment of cellulose-containing material with microorganisms or enzymes
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/10—Bleaching ; Apparatus therefor
- D21C9/1005—Pretreatment of the pulp, e.g. degassing the pulp
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/10—Bleaching ; Apparatus therefor
- D21C9/1026—Other features in bleaching processes
- D21C9/1036—Use of compounds accelerating or improving the efficiency of the processes
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Chemical & Material Sciences (AREA)
- Biochemistry (AREA)
- Microbiology (AREA)
- Paper (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US69671491A | 1991-05-07 | 1991-05-07 |
Publications (3)
Publication Number | Publication Date |
---|---|
SE9201441D0 SE9201441D0 (sv) | 1992-05-07 |
SE9201441L SE9201441L (sv) | 1992-11-08 |
SE511229C2 true SE511229C2 (sv) | 1999-08-30 |
Family
ID=24798242
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE9201441A SE511229C2 (sv) | 1991-05-07 | 1992-05-07 | Förfarande för användning av enzymer vid framställning och blekning av pappersmassa |
Country Status (5)
Country | Link |
---|---|
US (1) | US5591304A (fi) |
JP (1) | JP3261661B2 (fi) |
CA (1) | CA2079000C (fi) |
FI (1) | FI108800B (fi) |
SE (1) | SE511229C2 (fi) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6273994B1 (en) | 1998-01-30 | 2001-08-14 | Iogen Corporation | Method and device for measuring bleach requirement, bleachability, and effectivenss of hemicellulase enzyme treatment of pulp |
US7368036B2 (en) * | 2002-03-06 | 2008-05-06 | Iogen Bio-Products Corporation | Xylanase treatment of chemical pulp |
EP1516053B1 (en) * | 2002-06-14 | 2012-10-17 | Verenium Corporation | Xylanases, nucleic adics encoding them and methods for making and using them |
AU2004254640B2 (en) | 2003-07-02 | 2010-08-26 | Bp Corporation North America Inc. | Glucanases, nucleic acids encoding them and methods for making and using them |
US7741089B2 (en) | 2003-08-11 | 2010-06-22 | Verenium Corporation | Laccases, nucleic acids encoding them and methods for making and using them |
US8945347B2 (en) * | 2004-05-03 | 2015-02-03 | Centre Technique De L'industrie Des Papiers, Cartons Et Celluloses | Method for mechanical pulp production |
US8138106B2 (en) | 2005-09-30 | 2012-03-20 | Rayonier Trs Holdings Inc. | Cellulosic fibers with odor control characteristics |
EP3406621A1 (en) | 2006-02-14 | 2018-11-28 | BP Corporation North America Inc. | Xylanases, nucleic acids encoding them and methods for making and using them |
JP4958097B2 (ja) | 2006-07-19 | 2012-06-20 | 国立大学法人京都大学 | ナノファイバーシート及びその製造方法並びに繊維強化複合材料 |
AU2007356171B8 (en) | 2006-08-04 | 2014-01-16 | Bp Corporation North America Inc. | Glucanases, nucleic acids encoding them, and methods for making and using them |
DK2205744T3 (en) | 2007-10-03 | 2015-04-27 | Bp Corp North America Inc | Xylanases, nucleic acids encoding them, and methods of making and an-facing presence thereof |
CN104195859B (zh) * | 2014-09-23 | 2016-06-29 | 广西大学 | 一种生物酶辅助二氧化氯漂白蔗渣浆的方法 |
CN114045695B (zh) * | 2021-11-05 | 2023-02-07 | 苏州埃斯腾特生物科技有限公司 | 复配生物酶制剂及其制备方法和应用 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE406944B (sv) * | 1976-04-14 | 1979-03-05 | Mo Och Domsjoe Ab | Forfarande for att reglera tillsatsen av suspensinsvetska vid kontinuerlig tvettning av suspensioner |
FR2604198B1 (fr) * | 1986-09-22 | 1989-07-07 | Du Pin Cellulose | Procede de traitement d'une pate papetiere par une solution enzymatique. |
FI81395B (fi) * | 1988-03-14 | 1990-06-29 | Cultor Oy | Foerfarande foer blekning av cellulosamassa. |
DE68914112T2 (de) * | 1988-11-23 | 1994-08-04 | Sandoz Ag | Benutzung von Enzymen von Aureobasidium Pullulans für das Bleichen von Zellstoff. |
US5179021A (en) * | 1989-02-10 | 1993-01-12 | Gil Inc. (Now Ici Canada Inc.) | Pulp bleaching process comprising oxygen delignification and xylanase enzyme treatment |
FI90888B (fi) * | 1989-02-14 | 1993-12-31 | Enso Gutzeit Oy | Menetelmä selluloosamassan valkaisemiseksi |
FI86896B (fi) * | 1989-05-04 | 1992-07-15 | Enso Gutzeit Oy | Foerfarande foer blekning av cellulosamassa. |
ZA904441B (en) * | 1989-06-22 | 1991-03-27 | Int Paper Co | Enzymatic delignification of lignocellulosic material |
FI88316C (fi) * | 1989-07-10 | 1993-04-26 | Enso Gutzeit Oy | Foerfarande foer blekning av cellulosamassa |
DE69025405T2 (de) * | 1989-08-14 | 1996-09-05 | Genencor Int Europ | Verbesserung beim bleichen von pulpe |
DK420289D0 (da) * | 1989-08-25 | 1989-08-25 | Novo Nordisk As | Fremgangsmaade til behandling af lignocellulosepulp |
-
1992
- 1992-05-06 FI FI922051A patent/FI108800B/fi active
- 1992-05-07 CA CA002079000A patent/CA2079000C/en not_active Expired - Lifetime
- 1992-05-07 SE SE9201441A patent/SE511229C2/sv unknown
- 1992-05-07 JP JP14105392A patent/JP3261661B2/ja not_active Expired - Fee Related
-
1994
- 1994-10-04 US US08/317,828 patent/US5591304A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
FI922051A0 (fi) | 1992-05-06 |
US5591304A (en) | 1997-01-07 |
FI108800B (fi) | 2002-03-28 |
CA2079000C (en) | 1996-06-18 |
JP3261661B2 (ja) | 2002-03-04 |
SE9201441D0 (sv) | 1992-05-07 |
SE9201441L (sv) | 1992-11-08 |
FI922051A (fi) | 1992-11-08 |
JPH06166977A (ja) | 1994-06-14 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0473545B1 (en) | Thermostable endoxylanases | |
FI94265B (fi) | Menetelmä lignoselluloosamateriaalin valkaisemiseksi happi- ja entsyymikäsittelyllä | |
EP0926234B1 (en) | Thermostable xylanases | |
EP0489104B1 (en) | Process for treatment of lignocellulosic pulp | |
EP0351655B1 (en) | A method for the treatment of pulp | |
AU624279B2 (en) | Method for bleaching with reduced organic chlorides | |
Zhao et al. | Xylanase pretreatment leads to enhanced soda pulping of wheat straw | |
SE511229C2 (sv) | Förfarande för användning av enzymer vid framställning och blekning av pappersmassa | |
CA2064045C (en) | Oxygen bleaching of pulp | |
US7320741B2 (en) | Method of xylanase treatment in a chlorine dioxide bleaching sequence | |
US5004523A (en) | Delignification of lignocellulosic materials with monoperoxysulfuric acid | |
DE68914112T2 (de) | Benutzung von Enzymen von Aureobasidium Pullulans für das Bleichen von Zellstoff. | |
CA2432788C (en) | Alkaline extraction stages comprising xylanase | |
FI89613B (fi) | Foerfarande foer enzymatisk behandling av cellulosamassor | |
CA2541229A1 (en) | Modified method for mechanical pulp production | |
AU660966B2 (en) | A method for reducing pitch trouble in mechanical pulp | |
BUCHERT et al. | A. SUURNÄKKI and L. VIIKARI VTT Biotechnology and Food Research, Espoo, Finland | |
VIIKARI | J. BUCHERT, T. OKSANEN, J. PERE, M. SIIKA-AHO, A. SUURNÄKKI and | |
Bissoon | Evaluation of the Bleach-enhancing Effects of Xylanases on Bagasse-soda Pulp | |
CA2167946A1 (en) | Method for the use of enzymes in processing and bleaching of paper pulp, and apparatus for the use thereof | |
NO173516B (no) | Fremgangsmaate for bleking av celluloseholdig masse ved behandling med en kultur av aureobasidium pullulans, eller et enzymatisk system inneholdende minst en hemicellulose ava. pullulans | |
NO180019B (no) | Fremgangsmåte hvor det anvendes cellulase for forbedring av avvanningsegenskaper for masse |