BR9106411A - ENZYMATIC CELLULOSIS WHITING PROCESS - Google Patents

ENZYMATIC CELLULOSIS WHITING PROCESS

Info

Publication number
BR9106411A
BR9106411A BR919106411A BR9106411A BR9106411A BR 9106411 A BR9106411 A BR 9106411A BR 919106411 A BR919106411 A BR 919106411A BR 9106411 A BR9106411 A BR 9106411A BR 9106411 A BR9106411 A BR 9106411A
Authority
BR
Brazil
Prior art keywords
enzymatic
addition
cellulosis
reaction
bleaching
Prior art date
Application number
BR919106411A
Other languages
Portuguese (pt)
Inventor
Hans-Peter Call
Original Assignee
Call Hans Peter
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Call Hans Peter filed Critical Call Hans Peter
Publication of BR9106411A publication Critical patent/BR9106411A/en

Links

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

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)
  • Immobilizing And Processing Of Enzymes And Microorganisms (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Breeding Of Plants And Reproduction By Means Of Culturing (AREA)
  • Detergent Compositions (AREA)
  • Medicinal Preparation (AREA)
  • Cosmetics (AREA)
  • Nitrogen Condensed Heterocyclic Rings (AREA)

Abstract

The present invention concerns a process for the enzymatic bleaching of celluloses in which a) a redox potential in the range between 200 and 500 mV is set with the simultaneous dosed addition of oxidation and reducing agents and the addition of salts and complex formers to provide an aqueous cellulose-containing solution; b) a bleaching reaction is initiated by the addition of lignolytic enzymes; and c) the reaction is maintained for 15 minutes to 12 hours under continuous agitation.
BR919106411A 1990-03-20 1991-03-19 ENZYMATIC CELLULOSIS WHITING PROCESS BR9106411A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4008893A DE4008893A1 (en) 1990-03-20 1990-03-20 METHOD FOR ENZYMATIC BLEACHING OF CELLULAS
PCT/EP1991/000540 WO1991014823A1 (en) 1990-03-20 1991-03-19 Process for the enzymatic bleaching of celluloses

Publications (1)

Publication Number Publication Date
BR9106411A true BR9106411A (en) 1993-05-04

Family

ID=6402620

Family Applications (1)

Application Number Title Priority Date Filing Date
BR919106411A BR9106411A (en) 1990-03-20 1991-03-19 ENZYMATIC CELLULOSIS WHITING PROCESS

Country Status (13)

Country Link
EP (1) EP0447673B1 (en)
JP (1) JPH05505857A (en)
AT (1) ATE119593T1 (en)
AU (1) AU641494B2 (en)
BR (1) BR9106411A (en)
CA (1) CA2078345A1 (en)
DE (2) DE4008893A1 (en)
DK (1) DK0447673T3 (en)
ES (1) ES2072965T3 (en)
FI (1) FI924169A0 (en)
HU (1) HUT64119A (en)
NO (1) NO180388C (en)
WO (1) WO1991014823A1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4137761A1 (en) * 1991-05-17 1992-11-19 Call Hans Peter METHOD FOR DELIGNIFYING LIGNOCELLULOSE-CONTAINING MATERIAL, BLEACHING AND TREATING WASTEWATER BY LACCASE WITH EXTENDED EFFECTIVENESS
FI914780A0 (en) * 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
CN1127523A (en) * 1993-06-16 1996-07-24 汉斯-彼得·考尔 Multicomponent bleaching system
BE1007272A3 (en) * 1993-07-15 1995-05-09 Solvay Method of a pulp bleach.
EP0652321B1 (en) * 1993-11-04 1998-01-21 Morton International, Inc. Chemical pulp bleaching
DE19820947B4 (en) * 1997-05-12 2005-12-01 Call, Krimhild Enzymatic bleaching system with novel enzyme action enhancing compounds for altering, degrading or bleaching lignin, lignin containing materials, or altering or degrading coal, and methods using the bleaching system
DE69726320T2 (en) * 1997-08-14 2004-10-21 Takashi Watanabe CHEMICAL METHOD FOR DEPOLYMERIZING LIGNIN
ID26087A (en) * 1998-04-16 2000-11-23 Pulp And Paper Res Institusi O OXIDATION PROCESS FOR OXIDATION OF WOOD AND DYE MATERIALS

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3110117C2 (en) * 1981-03-16 1983-09-29 Adolf 5340 St. Gilgen Basler Production of cellulose from wood or other lignocellulose-containing plants through microbial degradation of the lignocellulose
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
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
US4687741A (en) * 1985-07-15 1987-08-18 Repligen Corporation Novel enzymes which catalyze the degradation and modification of lignin
DE3636208A1 (en) * 1986-10-24 1988-05-05 Call Hans Peter METHOD FOR DELIGNIFYING AND WHICH BLEACHING LIGNICELLULOSE-CONTAINING OR LIGNINAL MATERIAL OR LIGNIN BY ENZYMATIC TREATMENT
ZA894239B (en) * 1988-06-08 1990-03-28 Int Paper Co Enzymatic delignification of lignocellulosic material

Also Published As

Publication number Publication date
FI924169A (en) 1992-09-17
HUT64119A (en) 1993-11-29
NO180388B (en) 1996-12-30
FI924169A0 (en) 1992-09-17
DE4008893C2 (en) 1992-09-03
JPH05505857A (en) 1993-08-26
DE4008893A1 (en) 1991-09-26
AU7543291A (en) 1991-10-21
DK0447673T3 (en) 1995-07-24
CA2078345A1 (en) 1991-09-21
AU641494B2 (en) 1993-09-23
EP0447673B1 (en) 1995-03-08
DE59008655D1 (en) 1995-04-13
EP0447673A1 (en) 1991-09-25
NO923601L (en) 1992-09-16
NO923601D0 (en) 1992-09-16
ATE119593T1 (en) 1995-03-15
NO180388C (en) 1997-04-09
ES2072965T3 (en) 1995-08-01
HU9202982D0 (en) 1993-01-28
WO1991014823A1 (en) 1991-10-03

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Legal Events

Date Code Title Description
FB36 Technical and formal requirements: requirement - article 36 of industrial property law
FA8 Dismissal: dismissal - article 36, par. 1 of industrial property law