[go: up one dir, main page]

SE9603029D0 - Method for lowering the level of oxalic acid - Google Patents

Method for lowering the level of oxalic acid

Info

Publication number
SE9603029D0
SE9603029D0 SE9603029A SE9603029A SE9603029D0 SE 9603029 D0 SE9603029 D0 SE 9603029D0 SE 9603029 A SE9603029 A SE 9603029A SE 9603029 A SE9603029 A SE 9603029A SE 9603029 D0 SE9603029 D0 SE 9603029D0
Authority
SE
Sweden
Prior art keywords
oxalic acid
lowering
level
oxalate
processes
Prior art date
Application number
SE9603029A
Other languages
Swedish (sv)
Inventor
Nils-Olof Nilvebrant
Anders Reimann
Filipe De Sousa
Original Assignee
Svenska Traeforskningsinst
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 Svenska Traeforskningsinst filed Critical Svenska Traeforskningsinst
Priority to SE9603029A priority Critical patent/SE9603029D0/en
Publication of SE9603029D0 publication Critical patent/SE9603029D0/en
Priority to EP97935959A priority patent/EP0920552A1/en
Priority to PCT/SE1997/001365 priority patent/WO1998007922A1/en

Links

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Paper (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Biochemistry (AREA)
  • Microbiology (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)

Abstract

One or several oxalic acid or oxalate decomposing enzymes are used to lower the concentration of oxalic acid and/or oxalate precipitates in the production of pulp and paper. The method is particularly useful in processes using oxidative bleaching and in particular in processes where the process liquids are recirculated within the plant. Thus the forming of incrusts and sediments, comprising sparingly soluble oxalate compounds, is reduced or prevented.
SE9603029A 1996-08-20 1996-08-20 Method for lowering the level of oxalic acid SE9603029D0 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SE9603029A SE9603029D0 (en) 1996-08-20 1996-08-20 Method for lowering the level of oxalic acid
EP97935959A EP0920552A1 (en) 1996-08-20 1997-08-20 Method for lowering the level of oxalic acid
PCT/SE1997/001365 WO1998007922A1 (en) 1996-08-20 1997-08-20 Method for lowering the level of oxalic acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9603029A SE9603029D0 (en) 1996-08-20 1996-08-20 Method for lowering the level of oxalic acid

Publications (1)

Publication Number Publication Date
SE9603029D0 true SE9603029D0 (en) 1996-08-20

Family

ID=20403605

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9603029A SE9603029D0 (en) 1996-08-20 1996-08-20 Method for lowering the level of oxalic acid

Country Status (3)

Country Link
EP (1) EP0920552A1 (en)
SE (1) SE9603029D0 (en)
WO (1) WO1998007922A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8486389B2 (en) 1997-05-23 2013-07-16 Oxthera, Inc. Compositions and methods for treating or preventing oxalate-related disease
SE518075C2 (en) * 2000-12-07 2002-08-20 Stora Kopparbergs Bergslags Ab Ways of Removing Hard Soluble Coatings
EP1446481B1 (en) * 2001-10-05 2008-05-21 OxThera, Inc., Materials and methods for reducing oxalate concentrations in fluids
AU2005339139A1 (en) 2005-12-14 2007-06-21 Oxthera, Inc. Pharmaceutical compositions and methods for treating or preventing oxalate-related disease
JP5558002B2 (en) 2005-12-16 2014-07-23 オクセラ インコーポレイテッド Compositions and methods for oxalate reduction

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE417114B (en) * 1977-07-25 1981-02-23 Mo Och Domsjoe Ab PROCEDURE FOR PREVENTION OF INSTRUCTIVE EDUCATION IN CELLULOS FACTORIES
US5320757A (en) * 1993-04-05 1994-06-14 Betz Laboratories, Inc. Method of inhibiting calcium oxalate scale deposition
ES2163427T3 (en) * 1993-06-14 2002-02-01 Solutia Europ Nv Sa PROCEDURE TO INHIBIT THE FORMATION OF OXALATE DEPOSITS.
US5554259A (en) * 1993-10-01 1996-09-10 Union Camp Patent Holdings, Inc. Reduction of salt scale precipitation by control of process stream Ph and salt concentration
SE504424C2 (en) * 1994-11-04 1997-02-10 Kvaerner Pulping Tech Ways to precipitate transition metals and alkaline earth metals from bleaching liquids by adding alkaline liquid

Also Published As

Publication number Publication date
EP0920552A1 (en) 1999-06-09
WO1998007922A1 (en) 1998-02-26

Similar Documents

Publication Publication Date Title
JPH0718108B2 (en) Method for producing cellulose from lignin-containing raw material
FI890700A0 (en) Process for bleaching cellulose pulp
DE3882078D1 (en) AMPEROMETRIC METHOD FOR TITRATION OF NADH (1,4-DIHYDRONICOTINAMIDE-ADENINE-DINUCLEOTIDE) IN SOLUTION.
ATE156462T1 (en) METHOD FOR THE WETOXIDATIVE TREATMENT OF ORGANIC POLLUTANTS IN WASTEWATER
SE9603029D0 (en) Method for lowering the level of oxalic acid
DE69113444D1 (en) METHOD FOR BLEACHING CHEMICAL PAPER FIBER.
ATE30407T1 (en) ENZYMATIC REMOVAL OF AROMATIC HYDROXY COMPOUNDS AND AROMATIC AMINES FROM WASTE WATER.
ES2056826T3 (en) IMPROVING THE QUALITY OF ALCOHOLIC LIQUIDS.
CA1335184C (en) Procedure for the bleaching of pulp involving the use of laccase, a lignin-modifying oxidation-reduction enzyme
ES478533A1 (en) A PROCEDURE FOR REMOVING MELAMINE FROM LIQUIDS CONTAINING MELAMINE.
KR960022277A (en) Waste treatment method
FI905954A0 (en) FOERFARANDE FOER BLEKNING AV CELLULOSAMASSA.
NO176485C (en) Method of treating fiber pulp with a chemical solution
ATE6418T1 (en) MEANS AND PROCESSES FOR THE TREATMENT OF RECYCLING WATER AND WASTEWATER FROM THE PAPERMAKING AND RELATED INDUSTRIES.
DK0738189T3 (en) Process for oxidative purification of contaminated sludge or slurry soil
FI956346A0 (en) Method for reducing the concentration of finely dispersed solids in papermaking process solutions
Ganczarczyk Fate of lignin in kraft effluent treatment
SU666137A1 (en) Method of purifying waste water containing phenol and sulphites
DE3674859D1 (en) METHOD FOR DELIGNIFYING CELLULOSE MATERIALS.
DE59001054D1 (en) METHOD AND SYSTEM FOR ANAEROBICLY DEGRADING HIGH-LOAD PROCESS WASTE.
ATE122745T1 (en) METHOD FOR TREATING RECOVERED WASTEWATER DESTINED FOR DILUTING PULP.
SE7705121L (en) SEWERAGE TREATMENT
CA1336079C (en) Process for removing or transforming lignin
JPS57194794A (en) Purification of lactic acid produced by fermentation
UA29320A (en) Method for well acid treatment