DK0447672T3 - Process for reprocessing used paper with enzymatic ink removal - Google Patents

Process for reprocessing used paper with enzymatic ink removal

Info

Publication number
DK0447672T3
DK0447672T3 DK90125379T DK90125379T DK0447672T3 DK 0447672 T3 DK0447672 T3 DK 0447672T3 DK 90125379 T DK90125379 T DK 90125379T DK 90125379 T DK90125379 T DK 90125379T DK 0447672 T3 DK0447672 T3 DK 0447672T3
Authority
DK
Denmark
Prior art keywords
reaction
litres
minutes
used paper
waste paper
Prior art date
Application number
DK90125379T
Other languages
Danish (da)
Inventor
Hans-Peter Dr Call
Original Assignee
Lignozym Gmbh
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 Lignozym Gmbh filed Critical Lignozym Gmbh
Application granted granted Critical
Publication of DK0447672T3 publication Critical patent/DK0447672T3/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
    • C12P19/00—Preparation of compounds containing saccharide radicals
    • C12P19/14—Preparation of compounds containing saccharide radicals produced by the action of a carbohydrase (EC 3.2.x), e.g. by alpha-amylase, e.g. by cellulase, hemicellulase
    • 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
    • D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
    • D21C5/02—Working-up waste paper
    • D21C5/025—De-inking
    • D21C5/027—Chemicals therefor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/64—Paper recycling

Abstract

Process for processing waste paper with enzymatic removal of printing ink, in which a) the redox potential of a solution containing waste paper is adjusted to a value in the range of 200 to 500 mV by simultaneous dosing of oxidizing and reducing agents, b) a lignin-decomposing reaction is initiated by addition of lignolytic enzymes, c) the reaction is continued for approximately 10 minutes by adding 60 to 80 litres/hour of air per 1.5 litres of reaction volume at 40 DEG C, 0.8 to 2.5 % substance density and a stirrer speed of 1200 to 1600 rpm in a standard commercial flotation installation, and d) the reaction continues for 60 to 90 minutes with a reduced supply of air and at reduced stirrer speed.
DK90125379T 1990-03-20 1990-12-22 Process for reprocessing used paper with enzymatic ink removal DK0447672T3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19904008894 DE4008894A1 (en) 1990-03-20 1990-03-20 METHOD FOR RECYCLING PAPER WITH ENZYMATIC PRINT INK REMOVAL

Publications (1)

Publication Number Publication Date
DK0447672T3 true DK0447672T3 (en) 1995-07-24

Family

ID=6402621

Family Applications (1)

Application Number Title Priority Date Filing Date
DK90125379T DK0447672T3 (en) 1990-03-20 1990-12-22 Process for reprocessing used paper with enzymatic ink removal

Country Status (14)

Country Link
EP (1) EP0447672B1 (en)
JP (1) JPH05506275A (en)
AT (1) ATE119592T1 (en)
AU (1) AU652358B2 (en)
BR (1) BR9106253A (en)
CA (1) CA2078346A1 (en)
DE (2) DE4008894A1 (en)
DK (1) DK0447672T3 (en)
ES (1) ES2072964T3 (en)
FI (1) FI924168A0 (en)
HU (1) HUT64118A (en)
NO (1) NO180725C (en)
RU (1) RU2066720C1 (en)
WO (1) WO1991014820A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5370770A (en) * 1992-11-09 1994-12-06 The Mead Corporation Method for deinking printed waste paper using soybean peroxidase
JP2958269B2 (en) * 1996-06-03 1999-10-06 花王株式会社 Deinking method
US6228128B1 (en) 1997-11-10 2001-05-08 Charlotte Johansen Antimicrobial activity of laccases
DE59910199D1 (en) * 1999-03-22 2004-09-16 Kalkfabrik Netstal Ag Netstal Process for removing ink from waste paper
DE502004004871D1 (en) * 2004-02-18 2007-10-18 Sappi Austria Produktions Gmbh Process for the stabilization of germinatable liquid media
KR20160088301A (en) * 2013-11-18 2016-07-25 엔지매틱 데인킹 테크놀로지즈, 엘엘씨 Enzymatic treatment of virgin fiber and recycled paper to reduce residual mineral oil levels for paper production

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2243340C2 (en) * 1972-04-26 1983-08-25 Great Eastern Packing & Paper Stock Corp., Richmond, Va. Use of an ethoxylated aliphatic mono-oil or diol for the environmentally friendly bleaching of printed waste paper
SE406482B (en) * 1975-03-11 1979-02-12 Ytkemiska Inst PROCEDURE FOR CLEANING AN AQUATIC DISPERSION OR MASS SLUB
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
US4687745A (en) * 1985-07-15 1987-08-18 Repligen Corporation Use of rLDM™ 1-6 and other ligninolytic enzymes in the treatment of mechanical pulps
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
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

Also Published As

Publication number Publication date
DE4008894C2 (en) 1992-09-03
WO1991014820A1 (en) 1991-10-03
NO180725C (en) 1997-06-04
FI924168A (en) 1992-09-17
AU652358B2 (en) 1994-08-25
ATE119592T1 (en) 1995-03-15
CA2078346A1 (en) 1991-09-21
NO923623D0 (en) 1992-09-17
EP0447672B1 (en) 1995-03-08
ES2072964T3 (en) 1995-08-01
JPH05506275A (en) 1993-09-16
RU2066720C1 (en) 1996-09-20
FI924168A0 (en) 1992-09-17
NO923623L (en) 1992-09-17
DE59008654D1 (en) 1995-04-13
HUT64118A (en) 1993-11-29
NO180725B (en) 1997-02-24
DE4008894A1 (en) 1991-09-26
EP0447672A1 (en) 1991-09-25
HU9202981D0 (en) 1993-01-28
AU7543091A (en) 1991-10-21
BR9106253A (en) 1993-04-06

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