CA2177254A1 - Deinking of waste paper by treatment with starch degrading enzyme e.g. amylase - Google Patents

Deinking of waste paper by treatment with starch degrading enzyme e.g. amylase

Info

Publication number
CA2177254A1
CA2177254A1 CA002177254A CA2177254A CA2177254A1 CA 2177254 A1 CA2177254 A1 CA 2177254A1 CA 002177254 A CA002177254 A CA 002177254A CA 2177254 A CA2177254 A CA 2177254A CA 2177254 A1 CA2177254 A1 CA 2177254A1
Authority
CA
Canada
Prior art keywords
treatment
amylase
deinking
degrading enzyme
waste paper
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
CA002177254A
Other languages
French (fr)
Other versions
CA2177254C (en
Inventor
Masaki Sharyo
Hidesato Shimoto
Hiromichi Sakaguchi
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.)
Novozymes AS
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
Priority claimed from DK131193A external-priority patent/DK131193D0/da
Application filed by Individual filed Critical Individual
Publication of CA2177254A1 publication Critical patent/CA2177254A1/en
Application granted granted Critical
Publication of CA2177254C publication Critical patent/CA2177254C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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

In the production of pulp and paper from starch-coated paper, the deinking effect can be improved by including a treatment a starch-degrading enzyme e.g. amylase or a debranching enzyme. The process comprises enzyme treatment before, during or after disintegration of the paper to produce pulp, followed by separation of ink particles.
CA 2177254 1993-11-23 1994-11-23 Deinking of waste paper by treatment with starch degrading enzyme e.g. amylase Expired - Lifetime CA2177254C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DK131193A DK131193D0 (en) 1993-11-23 1993-11-23
DK1311/93 1993-11-23
PCT/DK1994/000437 WO1995014807A1 (en) 1993-11-23 1994-11-23 Deinking of waste paper by treatment with starch degrading enzyme e.g. amylase

Publications (2)

Publication Number Publication Date
CA2177254A1 true CA2177254A1 (en) 1995-06-01
CA2177254C CA2177254C (en) 2005-10-25

Family

ID=35311635

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2177254 Expired - Lifetime CA2177254C (en) 1993-11-23 1994-11-23 Deinking of waste paper by treatment with starch degrading enzyme e.g. amylase

Country Status (1)

Country Link
CA (1) CA2177254C (en)

Also Published As

Publication number Publication date
CA2177254C (en) 2005-10-25

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Legal Events

Date Code Title Description
EEER Examination request
MKEX Expiry

Effective date: 20141124

MKEX Expiry

Effective date: 20141124