WO1991014823A1 - Verfahren zum enzymatischen bleichen von zellstoffen - Google Patents
Verfahren zum enzymatischen bleichen von zellstoffen Download PDFInfo
- Publication number
- WO1991014823A1 WO1991014823A1 PCT/EP1991/000540 EP9100540W WO9114823A1 WO 1991014823 A1 WO1991014823 A1 WO 1991014823A1 EP 9100540 W EP9100540 W EP 9100540W WO 9114823 A1 WO9114823 A1 WO 9114823A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- nnz
- cellulose
- bleaching
- added
- aqueous
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 51
- 229920002678 cellulose Polymers 0.000 title claims abstract description 26
- 238000004061 bleaching Methods 0.000 title claims abstract description 22
- 230000002255 enzymatic effect Effects 0.000 title claims abstract description 7
- 235000010980 cellulose Nutrition 0.000 title abstract 3
- 239000001913 cellulose Substances 0.000 claims abstract description 24
- 108090000790 Enzymes Proteins 0.000 claims abstract description 15
- 102000004190 Enzymes Human genes 0.000 claims abstract description 15
- 238000006243 chemical reaction Methods 0.000 claims abstract description 11
- 230000002479 lignolytic effect Effects 0.000 claims abstract description 10
- 150000003839 salts Chemical class 0.000 claims abstract description 10
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 7
- 239000000243 solution Substances 0.000 claims description 13
- OEGPRYNGFWGMMV-UHFFFAOYSA-N (3,4-dimethoxyphenyl)methanol Chemical compound COC1=CC=C(CO)C=C1OC OEGPRYNGFWGMMV-UHFFFAOYSA-N 0.000 claims description 8
- 239000007844 bleaching agent Substances 0.000 claims description 6
- 239000007800 oxidant agent Substances 0.000 claims description 6
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 claims description 5
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 5
- 230000001590 oxidative effect Effects 0.000 claims description 5
- 150000002989 phenols Chemical class 0.000 claims description 5
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 claims description 4
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 4
- 239000005708 Sodium hypochlorite Substances 0.000 claims description 4
- 239000008139 complexing agent Substances 0.000 claims description 4
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 claims description 4
- 229910000366 copper(II) sulfate Inorganic materials 0.000 claims description 4
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 claims description 4
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 claims description 4
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 3
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 claims description 3
- 239000000460 chlorine Substances 0.000 claims description 3
- 229910052801 chlorine Inorganic materials 0.000 claims description 3
- -1 haem compounds Chemical class 0.000 claims description 3
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 claims description 3
- 229960001922 sodium perborate Drugs 0.000 claims description 3
- YKLJGMBLPUQQOI-UHFFFAOYSA-M sodium;oxidooxy(oxo)borane Chemical compound [Na+].[O-]OB=O YKLJGMBLPUQQOI-UHFFFAOYSA-M 0.000 claims description 3
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 claims description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 claims description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 2
- 239000004155 Chlorine dioxide Substances 0.000 claims description 2
- 229920001503 Glucan Polymers 0.000 claims description 2
- 229910002651 NO3 Inorganic materials 0.000 claims description 2
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims description 2
- 108010059820 Polygalacturonase Proteins 0.000 claims description 2
- 239000007864 aqueous solution Substances 0.000 claims description 2
- 235000010323 ascorbic acid Nutrition 0.000 claims description 2
- 229960005070 ascorbic acid Drugs 0.000 claims description 2
- 239000011668 ascorbic acid Substances 0.000 claims description 2
- 239000003153 chemical reaction reagent Substances 0.000 claims description 2
- 235000019398 chlorine dioxide Nutrition 0.000 claims description 2
- 239000003599 detergent Substances 0.000 claims description 2
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 2
- GRWZHXKQBITJKP-UHFFFAOYSA-L dithionite(2-) Chemical compound [O-]S(=O)S([O-])=O GRWZHXKQBITJKP-UHFFFAOYSA-L 0.000 claims description 2
- 108010093305 exopolygalacturonase Proteins 0.000 claims description 2
- 239000000194 fatty acid Substances 0.000 claims description 2
- 229930195729 fatty acid Natural products 0.000 claims description 2
- 150000004665 fatty acids Chemical class 0.000 claims description 2
- 150000004676 glycans Chemical class 0.000 claims description 2
- 108010002430 hemicellulase Proteins 0.000 claims description 2
- 229920001282 polysaccharide Polymers 0.000 claims description 2
- 239000005017 polysaccharide Substances 0.000 claims description 2
- 238000003756 stirring Methods 0.000 claims description 2
- 239000004094 surface-active agent Substances 0.000 claims description 2
- 229920001285 xanthan gum Polymers 0.000 claims description 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims 3
- QPCDCPDFJACHGM-UHFFFAOYSA-N N,N-bis{2-[bis(carboxymethyl)amino]ethyl}glycine Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(=O)O)CCN(CC(O)=O)CC(O)=O QPCDCPDFJACHGM-UHFFFAOYSA-N 0.000 claims 2
- 229960001484 edetic acid Drugs 0.000 claims 2
- 229960003330 pentetic acid Drugs 0.000 claims 2
- GJCOSYZMQJWQCA-UHFFFAOYSA-N 9H-xanthene Chemical compound C1=CC=C2CC3=CC=CC=C3OC2=C1 GJCOSYZMQJWQCA-UHFFFAOYSA-N 0.000 claims 1
- 108010029541 Laccase Proteins 0.000 claims 1
- 108010054320 Lignin peroxidase Proteins 0.000 claims 1
- 101100240595 Mus musculus Nipal4 gene Proteins 0.000 claims 1
- 150000001720 carbohydrates Chemical class 0.000 claims 1
- JVBXVOWTABLYPX-UHFFFAOYSA-L sodium dithionite Chemical compound [Na+].[Na+].[O-]S(=O)S([O-])=O JVBXVOWTABLYPX-UHFFFAOYSA-L 0.000 claims 1
- 238000013019 agitation Methods 0.000 abstract 1
- 230000003647 oxidation Effects 0.000 abstract 1
- 238000007254 oxidation reaction Methods 0.000 abstract 1
- 239000000126 substance Substances 0.000 description 10
- 229920005610 lignin Polymers 0.000 description 9
- 241000222393 Phanerochaete chrysosporium Species 0.000 description 4
- 244000005700 microbiome Species 0.000 description 4
- 241000233866 Fungi Species 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 3
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- 210000004671 cell-free system Anatomy 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 102000001554 Hemoglobins Human genes 0.000 description 1
- 108010054147 Hemoglobins Proteins 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 108700020962 Peroxidase Proteins 0.000 description 1
- 102000003992 Peroxidases Human genes 0.000 description 1
- 102000003425 Tyrosinase Human genes 0.000 description 1
- 108060008724 Tyrosinase Proteins 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000031018 biological processes and functions Effects 0.000 description 1
- 239000007859 condensation product Substances 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 230000002538 fungal effect Effects 0.000 description 1
- 150000003278 haem Chemical class 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 235000021313 oleic acid Nutrition 0.000 description 1
- 150000002889 oleic acids Chemical class 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000002516 radical scavenger Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- WJUFSDZVCOTFON-UHFFFAOYSA-N veratraldehyde Chemical compound COC1=CC=C(C=O)C=C1OC WJUFSDZVCOTFON-UHFFFAOYSA-N 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 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
- 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
- D21C9/1084—Bleaching ; Apparatus therefor with reducing compounds
-
- 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
- D21C9/1084—Bleaching ; Apparatus therefor with reducing compounds
- D21C9/1089—Bleaching ; Apparatus therefor with reducing compounds with dithionites
-
- 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
- D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
-
- 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
- D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
- D21C9/153—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications with ozone
-
- 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
- D21C9/16—Bleaching ; Apparatus therefor with per compounds
- D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides
Definitions
- the present invention relates to a process for the enzymatic * bleaching of cellulose.
- DE-PS 31 10 117 discloses a process for the production of cellulose from wood or other plant fiber materials, in which the lignocellulose is broken down with the help of white rot fungi.
- the processes using microorganisms have considerable disadvantages. So far it has not been possible to achieve degradation and detachment of the lignin from its companion polymers (cellulose) without simultaneous growth of the microorganisms and without loss of celulose. The simultaneous growth of the fungus leads to very long breakdown times, which can take up to several weeks.
- the object of the present invention is to provide a process for the enzymatic bleaching of cellulose which no longer has the disadvantages of the biological and chemical bleaching processes.
- This object is achieved in that a) with the simultaneous addition of oxidizing and reducing agents and addition of salts and complexing agents to an aqueous cellulose-containing solution, a redox potential in the range between 200 and 500 mV is set, b) a bleaching reaction by adding lignolytic enzymes started and c) the reaction is maintained with constant stirring for 15 minutes to 12 hours. This procedure prevents repolymerization of the lignin and makes depolymerization possible.
- the redox potential is preferably between 250 and 450 mV.
- it can be determined by means of a redox electrode and kept constant by means of a regulator and an actuator during the entire reaction time by adding oxidizing and reducing agents, salts and phenolic compounds.
- Hydrogen peroxide, oxygen and ozone are preferably used as the oxidizing agent.
- Ascorbic acid, dithionite and sodium bisulfite are suitable as reducing agents.
- Copper (II) sulfate is added to the cellulose-containing aqueous solution as the salt.
- MndD sulfate, Mn (IID acetate, Fe (II) sulfate, THIID chloride, CedID nitrate and Ce (IV) ammonium nitrate can also be used as salts, and salts with the elements zinc, antimony and lead are also suitable. Possibly.
- phenolic compounds can be added to the aqueous cellulose-containing solution. Veratryl alcohols have proven particularly useful as such.
- the aqueous cellulose-containing solution can also contain fatty acids, for example oleic acids. Hem compounds such as hemoglobin and bleaching reagents such as sodium perborate can be added. In addition, post-bleaching with common bleaching agents, such as sodium hypochlorite, O 2 , chlorine dioxide. Ozone. H 2 O 2 and sodium ionite are carried out.
- fatty acids for example oleic acids. Hem compounds such as hemoglobin and bleaching reagents such as sodium perborate can be added.
- bleaching reagents such as sodium perborate
- post-bleaching with common bleaching agents such as sodium hypochlorite, O 2 , chlorine dioxide. Ozone. H 2 O 2 and sodium ionite are carried out.
- EDTA ethylenediaminetetraacetic acid
- DTPA Diethylenetriaminepentraacetic acid
- aqueous cellulose-containing solution Sodium hypochlorite, sodium perborate, detergents, surfactants and polysaccharides such as glucans and xanthans are suitable as such.
- Lignolytic enzymes are preferably used as enzymes in the method according to the invention. These include phenol oxidases, laocases and peroxidases. The effectiveness of the method can be increased by using pectinase and / or hemicellulases. Particularly suitable lignolytic enzymes are those which are obtained from the white rot fungus Phanerochaete chrysosporium. The use of such enzymes is already known from US Pat. Nos.
- the pH is usually between 2 and 5.
- a pH of 3 is particularly preferred.
- the temperature is 20 to 60 ° C., preferably 40 ° C. If the conditions are observed, the substances mentioned are added Redox potential set from 200 to 500 mV. This is determined by the ratio of the various substances added in the reaction vessel.
- Redox potential set from 200 to 500 mV. This is determined by the ratio of the various substances added in the reaction vessel.
- the bleaching process is started by simultaneous dosing of H 2 O 2 and sodium bisulfite solution.
- the redox potential of approx. 400 mV is maintained. After the process is started, it continues for 2 hours.
- the process is controlled and regulated by means of a redox electrode and a pump control.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Chemical & Material Sciences (AREA)
- Biochemistry (AREA)
- Microbiology (AREA)
- Paper (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Immobilizing And Processing Of Enzymes And Microorganisms (AREA)
- Breeding Of Plants And Reproduction By Means Of Culturing (AREA)
- Detergent Compositions (AREA)
- Medicinal Preparation (AREA)
- Cosmetics (AREA)
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP91506306A JPH05505857A (ja) | 1990-03-20 | 1991-03-19 | セルロースの酵素的漂白方法 |
| BR919106411A BR9106411A (pt) | 1990-03-20 | 1991-03-19 | Processo para branqueamento enzimatico de celuloses |
| FI924169A FI924169A0 (fi) | 1990-03-20 | 1991-03-19 | Foerfarande foer enzymatisk blekning av cellulosa. |
| NO923601A NO180388C (no) | 1990-03-20 | 1992-09-16 | Fremgangsmåte for enzymatisk bleking av cellulose |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP4008893.6 | 1990-03-20 | ||
| DE4008893A DE4008893A1 (de) | 1990-03-20 | 1990-03-20 | Verfahren zum enzymatischen bleichen von zellstoffen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1991014823A1 true WO1991014823A1 (de) | 1991-10-03 |
Family
ID=6402620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP1991/000540 WO1991014823A1 (de) | 1990-03-20 | 1991-03-19 | Verfahren zum enzymatischen bleichen von zellstoffen |
Country Status (13)
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0652321A1 (en) * | 1993-11-04 | 1995-05-10 | Morton International, Inc. | Chemical pulp bleaching |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4137761A1 (de) * | 1991-05-17 | 1992-11-19 | Call Hans Peter | Verfahren zur delignifizierung von lignocellulosehaltigem material, bleiche und behandlung von abwaessern mittels laccasen mit erweiteter wirksamkeit |
| FI914780A0 (fi) * | 1991-10-10 | 1991-10-10 | Valtion Teknillinen | Foerfarande foer entsymatisk behandling av lignocellulosahaltiga material, i synnerhet cellulosamassor. |
| CA2115881C (en) * | 1993-02-25 | 2000-05-23 | Michael G. Paice | Non-chlorine bleaching of kraft pulp |
| HU222280B1 (hu) * | 1993-06-16 | 2003-05-28 | Hans-Peter Call | Többkomponensű fehérítőrendszer és alkalmazása |
| BE1007272A3 (fr) * | 1993-07-15 | 1995-05-09 | Solvay | Procede pour le blanchiment d'une pate a papier. |
| DE19632623A1 (de) * | 1996-08-13 | 1998-02-19 | Consortium Elektrochem Ind | Mehrkomponentensystem zum Verändern, Abbau oder Bleichen von Lignin, ligninhaltigen Materialien oder ähnlichen Stoffen sowie Verfahren zu seiner Anwendung |
| PT925401E (pt) * | 1996-09-11 | 2002-07-31 | Solvay Interox Sa | Processo para o branqueamento de pasta de papel |
| DE19651099A1 (de) * | 1996-12-09 | 1998-06-10 | Consortium Elektrochem Ind | Mehrkomponentensystem zum Verändern, Abbau oder Bleichen von Lignin, ligninhaltigen Materialien oder ähnlichen Stoffen sowie Verfahren zu seiner Anwendung |
| DE19820947B4 (de) * | 1997-05-12 | 2005-12-01 | Call, Krimhild | Enzymatisches Bleichsystem mit neuen enzymwirkungsverstärkenden Verbindungen zum Verändern, Abbau oder Bleichen von Lignin, ligninhaltigen Materialien oder Verändern oder Abbau von Kohle sowie Verfahren unter Verwendung des Bleichsystems |
| DE69726320T2 (de) | 1997-08-14 | 2004-10-21 | Takashi Watanabe | Chemisches verfahren zur depolymerisation von lignin |
| JP2002512318A (ja) | 1998-04-16 | 2002-04-23 | パルプ アンド ペーパー リサーチ インスチチュート オブ カナダ | パルプ及び染料酸化のためのオキシダーゼ法 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1988003190A1 (en) * | 1986-10-24 | 1988-05-05 | Call Hans Peter | Process for producing cellulose from lignin-containing raw materials |
| EP0345715A1 (en) * | 1988-06-08 | 1989-12-13 | International Paper Company | Enzymatic delignification of lignocellulosic material |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3110117C2 (de) * | 1981-03-16 | 1983-09-29 | Adolf 5340 St. Gilgen Basler | Herstellung von Cellulose aus Holz oder anderen lignocellulosehaltigen Pflanzen durch mikrobiellen Abbau der Lignocellulose |
| US4690895A (en) * | 1985-07-15 | 1987-09-01 | Repligen Corporation | Use of rLDM™ 1-6 and other ligninolytic enzymes in the bleaching of kraft pulp |
| US4692413A (en) * | 1985-07-15 | 1987-09-08 | Repligen Corporation | Use of rLDM™ 1-6 and other ligninolytic enzymes for the decolorization of E1 effluent |
| US4687741A (en) * | 1985-07-15 | 1987-08-18 | Repligen Corporation | Novel enzymes which catalyze the degradation and modification of lignin |
-
1990
- 1990-03-20 DE DE4008893A patent/DE4008893A1/de active Granted
- 1990-12-22 DK DK90125380.7T patent/DK0447673T3/da active
- 1990-12-22 DE DE59008655T patent/DE59008655D1/de not_active Expired - Fee Related
- 1990-12-22 ES ES90125380T patent/ES2072965T3/es not_active Expired - Lifetime
- 1990-12-22 EP EP90125380A patent/EP0447673B1/de not_active Expired - Lifetime
- 1990-12-22 AT AT90125380T patent/ATE119593T1/de active
-
1991
- 1991-03-19 HU HU922982A patent/HUT64119A/hu unknown
- 1991-03-19 WO PCT/EP1991/000540 patent/WO1991014823A1/de active Application Filing
- 1991-03-19 CA CA002078345A patent/CA2078345A1/en not_active Abandoned
- 1991-03-19 FI FI924169A patent/FI924169A0/fi not_active Application Discontinuation
- 1991-03-19 BR BR919106411A patent/BR9106411A/pt not_active Application Discontinuation
- 1991-03-19 JP JP91506306A patent/JPH05505857A/ja active Pending
- 1991-03-19 AU AU75432/91A patent/AU641494B2/en not_active Ceased
-
1992
- 1992-09-16 NO NO923601A patent/NO180388C/no unknown
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1988003190A1 (en) * | 1986-10-24 | 1988-05-05 | Call Hans Peter | Process for producing cellulose from lignin-containing raw materials |
| EP0345715A1 (en) * | 1988-06-08 | 1989-12-13 | International Paper Company | Enzymatic delignification of lignocellulosic material |
Non-Patent Citations (1)
| Title |
|---|
| PAPIER, DAS. vol. 44, no. 10A, Oktober 1990, DARMSTADT DE Seiten V33 - V41; Call,H.P. et al.: "Einsatz von lignolytischen Enzymen bei der Zellstoff- und Papierherstellung (Biopulping, Biobleaching)." siehe Seite V39 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0652321A1 (en) * | 1993-11-04 | 1995-05-10 | Morton International, Inc. | Chemical pulp bleaching |
Also Published As
| Publication number | Publication date |
|---|---|
| NO180388B (no) | 1996-12-30 |
| NO180388C (no) | 1997-04-09 |
| DK0447673T3 (da) | 1995-07-24 |
| CA2078345A1 (en) | 1991-09-21 |
| ES2072965T3 (es) | 1995-08-01 |
| HU9202982D0 (en) | 1993-01-28 |
| DE59008655D1 (de) | 1995-04-13 |
| AU641494B2 (en) | 1993-09-23 |
| JPH05505857A (ja) | 1993-08-26 |
| DE4008893C2 (enrdf_load_stackoverflow) | 1992-09-03 |
| NO923601L (no) | 1992-09-16 |
| FI924169L (fi) | 1992-09-17 |
| FI924169A7 (fi) | 1992-09-17 |
| ATE119593T1 (de) | 1995-03-15 |
| AU7543291A (en) | 1991-10-21 |
| NO923601D0 (no) | 1992-09-16 |
| HUT64119A (en) | 1993-11-29 |
| EP0447673A1 (de) | 1991-09-25 |
| BR9106411A (pt) | 1993-05-04 |
| FI924169A0 (fi) | 1992-09-17 |
| EP0447673B1 (de) | 1995-03-08 |
| DE4008893A1 (de) | 1991-09-26 |
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