CA2032256A1 - Biological Method of Deinking Printed Wastepaper - Google Patents

Biological Method of Deinking Printed Wastepaper

Info

Publication number
CA2032256A1
CA2032256A1 CA2032256A CA2032256A CA2032256A1 CA 2032256 A1 CA2032256 A1 CA 2032256A1 CA 2032256 A CA2032256 A CA 2032256A CA 2032256 A CA2032256 A CA 2032256A CA 2032256 A1 CA2032256 A1 CA 2032256A1
Authority
CA
Canada
Prior art keywords
biological method
printed wastepaper
deinking printed
deinking
wastepaper
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CA2032256A
Other languages
French (fr)
Other versions
CA2032256C (en
Inventor
Tae J. Eom
Steven S. Ow
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Korea Research Institute of Chemical Technology KRICT
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to CA 2287602 priority Critical patent/CA2287602C/en
Priority to CA 2032256 priority patent/CA2032256C/en
Publication of CA2032256A1 publication Critical patent/CA2032256A1/en
Application granted granted Critical
Publication of CA2032256C publication Critical patent/CA2032256C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • D21C1/00—Pretreatment of the finely-divided materials before digesting
    • 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
    • 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

Landscapes

  • Paper (AREA)

Abstract

A biological method of deinking printed wastepaper consisting of the steps of disintegrating of printed wastepaper in hot water containing cellulase or pectase and removing ink particles from fibers by froth flotation or washing.
CA 2032256 1990-12-14 1990-12-14 Biological method of deinking printed wastepaper Expired - Lifetime CA2032256C (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CA 2287602 CA2287602C (en) 1990-12-14 1990-12-14 Biological method of deinking printed wastepaper
CA 2032256 CA2032256C (en) 1990-12-14 1990-12-14 Biological method of deinking printed wastepaper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA 2032256 CA2032256C (en) 1990-12-14 1990-12-14 Biological method of deinking printed wastepaper

Related Child Applications (1)

Application Number Title Priority Date Filing Date
CA 2287602 Division CA2287602C (en) 1990-12-14 1990-12-14 Biological method of deinking printed wastepaper

Publications (2)

Publication Number Publication Date
CA2032256A1 true CA2032256A1 (en) 1992-06-15
CA2032256C CA2032256C (en) 2000-02-22

Family

ID=4146648

Family Applications (2)

Application Number Title Priority Date Filing Date
CA 2032256 Expired - Lifetime CA2032256C (en) 1990-12-14 1990-12-14 Biological method of deinking printed wastepaper
CA 2287602 Expired - Lifetime CA2287602C (en) 1990-12-14 1990-12-14 Biological method of deinking printed wastepaper

Family Applications After (1)

Application Number Title Priority Date Filing Date
CA 2287602 Expired - Lifetime CA2287602C (en) 1990-12-14 1990-12-14 Biological method of deinking printed wastepaper

Country Status (1)

Country Link
CA (2) CA2032256C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6426200B1 (en) 1994-09-15 2002-07-30 University Of Georgia Research Foundation, Inc. Methods for enzymatic deinking of waste paper
US7282113B2 (en) 2004-11-17 2007-10-16 Tritexco, Inc. Method for enzymatic deinking of waste papers, the waste papers so treated and the treating composition
US8784613B2 (en) 2011-10-27 2014-07-22 Buckman Laboratories International, Inc. Method and composition for enzymatic treatment of fiber for papermaking, and paper products made therewith

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6426200B1 (en) 1994-09-15 2002-07-30 University Of Georgia Research Foundation, Inc. Methods for enzymatic deinking of waste paper
US6767728B2 (en) 1994-09-15 2004-07-27 University Of Georgia Research Foundation, Inc. Composition for enzymatic deinking of waste paper
US7282113B2 (en) 2004-11-17 2007-10-16 Tritexco, Inc. Method for enzymatic deinking of waste papers, the waste papers so treated and the treating composition
US8784613B2 (en) 2011-10-27 2014-07-22 Buckman Laboratories International, Inc. Method and composition for enzymatic treatment of fiber for papermaking, and paper products made therewith

Also Published As

Publication number Publication date
CA2032256C (en) 2000-02-22
CA2287602A1 (en) 1992-06-15
CA2287602C (en) 2007-07-03

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Legal Events

Date Code Title Description
EEER Examination request
MKEX Expiry