EP0421843B1 - Procédé de traitement d'une pâte papetière par une préparation enzymatique pour la fabrication de papier ou de carton - Google Patents

Procédé de traitement d'une pâte papetière par une préparation enzymatique pour la fabrication de papier ou de carton Download PDF

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Publication number
EP0421843B1
EP0421843B1 EP90402657A EP90402657A EP0421843B1 EP 0421843 B1 EP0421843 B1 EP 0421843B1 EP 90402657 A EP90402657 A EP 90402657A EP 90402657 A EP90402657 A EP 90402657A EP 0421843 B1 EP0421843 B1 EP 0421843B1
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EP
European Patent Office
Prior art keywords
papermaking pulp
enzymatic preparation
pulp
treating
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.)
Expired - Lifetime
Application number
EP90402657A
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German (de)
English (en)
French (fr)
Other versions
EP0421843A1 (fr
Inventor
Jean-Luc Fuentes
Christian Rousset
Gérard Goma
Jean-Claude Pommier
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.)
Smurfit Kappa Cellulose du Pin SAS
Original Assignee
Cellulose du Pin SA
Smurfit Cellulose du Pin SAS
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Publication date
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Application filed by Cellulose du Pin SA, Smurfit Cellulose du Pin SAS filed Critical Cellulose du Pin SA
Publication of EP0421843A1 publication Critical patent/EP0421843A1/fr
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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
    • 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

Definitions

  • the present invention relates to the paper industry and in particular the recycled paper industry and it relates more specifically to a new process for treating paper pulp by means of an enzymatic preparation, allowing in particular good machinability of said pulp during the paper making.
  • Pasta in aqueous suspension ready to be placed work on a paper machine can be characterized by various parameters, one of which is particularly significant for predicting the suitability of the pulp for draining.
  • the Schopper-Riegler degree (SR) of a pulp is thus defined as being an element of appreciation of the quality of a pulp for the manufacture of paper. It expresses the ability of water to separate from the suspension under the conditions defined by standard NFQ 50 003. On a scale ranging from 0 to 100, a high value of SR translates a low speed of drainage of the suspension while a low value indicates a faster drip speed. It has been observed, for example, that a dough which has undergone a refining operation has its SR more or less increased according to the degree of refining undergone, compared to a dough which has had little or no such operation.
  • This parameter plays a particularly important role in the productivity of the paper machine.
  • the draining phase must take as little time as possible.
  • the enzymatic preparations containing cellulases and / or hemicellulases described are preferably those which have a C1 activity, a C x activity and a xylanasic activity. These three activities are defined by the international nomenclature of enzymes and they can be qualified and expressed in units of the international system per milligram of powder of the enzyme preparation considered.
  • the C1 activity is the action of cellobiohydrolase which can be measured on very organized pure cellulose. This activity is manifested by the production of cellobiose and the international system has retained the AVICEL substrate as the reference substrate.
  • the activity C x is assayed on modified cellulose, carboxymethylcellulose and it is quantified by a drop in the viscosity of the carboxymethylcellulose or an increase in the reducing ends.
  • the xylanasic activity allows hydrolysis of the binding xylans.
  • the reaction medium can be more or less suitable for the action of enzymes. Temperature and pH conditions are more particularly suitable for avoiding any risk of denaturation of the enzymes by the medium.
  • the pH is thus advantageously between 3 and 7, and the temperature between 20 ° C and 60 ° C. Above 60 ° C, the medium tends to denature the enzyme, and below 20 ° C, the action of the enzymes manifests itself particularly slowly.
  • Certain papermaking compositions of recycled fibers may have a high pH and greater than 7. In this case, it may be necessary to lower the pH in order to be in the optimal conditions of action of the enzymatic preparations.
  • the reduction in pH is generally effected by the addition of acid such as sulfuric acid.
  • acid such as sulfuric acid.
  • the addition of an acid can cause disturbances in the formation of the sheet on the paper machine, for example reducing the effectiveness of certain agents such as retention agents. .
  • Publication EP-A-0 334 739 also describes a process for treating a paper composition with an enzymatic preparation having an action on cellulosic fibers in order to improve the drainability of the paper composition.
  • the invention overcomes the disadvantages mentioned.
  • the method according to the invention consists in using, with a view to lowering the SR and improving the drainability of the paper compositions, in particular based on recycled fibers, having an SR greater than 25, enzymatic preparations containing so-called alkaline cellulases, chosen from those produced by the fermentation of the Humicola insolens fungus and those produced by the Cellulomonas bacteria, and in that the treated paper compositions have a pH greater than 6.
  • alkaline cellulases preferably used are those obtained from strains deposited with an international depositary authority for microorganisms and referenced CBS 39 269, CBS 14 764, ATCC 16 454, ATCC 26 908, ATCC 34 627 for the fungus Humicola insolens and UDA 8,200, FIMI 11,341 , UDA 11,494 for the bacterium Cellulomonas .
  • All these cellulases have a higher CMC activity (C x ) and filter paper activity at pH 7 or 9 than pH 5.
  • the filter paper activity corresponds to the measurement of the reducing sugars released by the action of the enzymatic preparation from the filter paper (WHATMAN filter paper).
  • a paper pulp in particular a paper pulp based on recycled fibers, is treated with an enzymatic preparation having a maximum activity expressed in relation to lowering the SR degree for pH values greater than 6.
  • the enzymatic preparations according to the invention can be used at concentrations of between 0.01% to 2% by weight of the paper pulp expressed dry.
  • the paper compositions in aqueous suspensions are used on a conventional paper machine which comprises - a manufacturing table provided with a box providing a jet of pulp in aqueous suspension for the forming a sheet of paper, the manufacturing table being covered with a canvas for draining the dough, - a press section, - a drying section.
  • An aqueous suspension of a paper pulp based on recycled fibers is prepared in the following manner: Weigh 1 kg dry of a pulp made entirely of fibers from recycled cardboard boxes. It is made into an aqueous suspension at 3% by weight by adding water to a total weight of 33.333 kg. The pH is adjusted to obtain a pH of 5, 6, 7, 8, 9 according to the examples, then the fibrous suspension is brought to the desired temperature of 50, 40 or 30 ° C according to the examples. Once this temperature has been reached, 3 g of a cellulase-based powder designated under the name Celluzyme® 1500T by the company NOVO are introduced. The enzymes are allowed to react under stirring for 1/2 hour. The aqueous suspension is diluted by adding water to obtain a suspension at 7 g / l and the SR degree is measured. The values obtained are shown in the table below. 15 different examples are thus produced by temperature and pH.
  • the procedure is as in the previous examples except that the enzyme preparation is changed, here using a powder based on cellulases designated under the name Celluzyme® 0.7 T by the company NOVO.
  • the procedure is as in Examples 6, 8 and 10 respectively, using an enzymatic preparation based on cellulases derived from the strain CBS 14 764 of the fungus Humicola insolens .
  • the enzyme preparation is obtained as follows: The strain as supplied by the international depositary authority Centraalbureau Voor Schimmelculturen (CBS) is transferred into a sterile medium containing cellulose, at pH 6. After 7 days of culture at 40 ° C, the mycelium is separated from the medium fermentation by filtration. The filtrate obtained is lyophilized so as to obtain a powder which can be used in an amount of 0.01 to 2% by weight, of the dry weight of the paper pulp to be treated.
  • CBS Centraalbureau Voor Schimmelculturen
  • the procedure is as in Examples 6, 8 and 10 respectively, using an enzymatic preparation based on cellulases derived from the strain UDA 11 494 of the bacteria Cellulomonas .
  • the enzyme preparation is obtained as follows: The strain as supplied by the international depositary authority is transferred to a sterile medium containing cellulose, at pH 7. After 7 days of culture at 25 ° C., the cells are separated from the fermentation medium by filtration. The filtrate is lyophilized so as to obtain a powder which can be used in an amount of 0.01 to 2% by weight of the dry weight of the paper pulp to treat.
  • the figures in the appendix show the variations in the degree SR as a function of the pH for the three temperatures according to examples 1 to 30 and 37 to 51.
  • ⁇ SR is the difference in the Shopper degrees of pulp measured before and after the enzymatic treatment.
  • the graphs show the good reactivity of the enzymes used according to the invention for pH values greater than 6 whereas, for the enzyme preparations used in the prior art, this reactivity decreases sharply for pH values greater than 6. It may also be noted the unexpected effectiveness of the enzyme preparations according to the invention when the treatment is carried out at 30 ° C.
  • the action of the enzymes will translate on the paper machine by an improvement of the drainability and an increase in the speed of the machine. It allows a greater dilution of the paper composition in the headbox.

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  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Biochemistry (AREA)
  • Microbiology (AREA)
  • Paper (AREA)
  • Electron Beam Exposure (AREA)
  • Steroid Compounds (AREA)
  • Materials For Medical Uses (AREA)
  • Enzymes And Modification Thereof (AREA)
EP90402657A 1989-10-02 1990-09-27 Procédé de traitement d'une pâte papetière par une préparation enzymatique pour la fabrication de papier ou de carton Expired - Lifetime EP0421843B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8912823 1989-10-02
FR8912823A FR2652595B1 (fr) 1989-10-02 1989-10-02 Procede de traitement d'une pate papetiere par une preparation enzymatique pour la fabrication de papier ou carton.

Publications (2)

Publication Number Publication Date
EP0421843A1 EP0421843A1 (fr) 1991-04-10
EP0421843B1 true EP0421843B1 (fr) 1994-12-14

Family

ID=9385984

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90402657A Expired - Lifetime EP0421843B1 (fr) 1989-10-02 1990-09-27 Procédé de traitement d'une pâte papetière par une préparation enzymatique pour la fabrication de papier ou de carton

Country Status (11)

Country Link
US (1) US5116474A (es)
EP (1) EP0421843B1 (es)
JP (1) JPH03124891A (es)
AT (1) ATE115661T1 (es)
CA (1) CA2026652A1 (es)
DE (1) DE69015095T2 (es)
ES (1) ES2068360T3 (es)
FI (1) FI101722B1 (es)
FR (1) FR2652595B1 (es)
GR (1) GR3015285T3 (es)
NO (1) NO176617C (es)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR960016598B1 (ko) * 1989-05-16 1996-12-16 재단법인 한국화학연구소 고지의 생물학적 탈묵에 의한 재생방법
US5370999A (en) * 1992-12-17 1994-12-06 Colorado State University Research Foundation Treatment of fibrous lignocellulosic biomass by high shear forces in a turbulent couette flow to make the biomass more susceptible to hydrolysis
FI92500C (fi) * 1993-03-03 1994-11-25 Valtion Teknillinen Menetelmä mekaanisen massan valmistamiseksi
US5843764A (en) * 1993-05-21 1998-12-01 Martin Marietta Energy Systems, Inc. Method for separating the non-inked cellulose fibers from the inked cellulose fibers in cellulosic materials
US6001218A (en) * 1994-06-29 1999-12-14 Kimberly-Clark Worldwide, Inc. Production of soft paper products from old newspaper
US6074527A (en) * 1994-06-29 2000-06-13 Kimberly-Clark Worldwide, Inc. Production of soft paper products from coarse cellulosic fibers
US5582681A (en) * 1994-06-29 1996-12-10 Kimberly-Clark Corporation Production of soft paper products from old newspaper
JPH0849187A (ja) * 1994-08-05 1996-02-20 New Oji Paper Co Ltd オフセット印刷用塗工紙
EP1995303A3 (en) * 1994-10-06 2008-12-31 Novozymes A/S Enzyme preparation with endoglucanase activity
US5725732A (en) * 1994-11-18 1998-03-10 P. H. Glatfelter Company Process for treating hardwood pulp with an enzyme mixture to reduce vessel element picking
GB2296513B (en) * 1994-12-24 1998-07-29 Ciba Geigy Ag Paper treatment
US5961735A (en) * 1995-06-21 1999-10-05 North Carolina State University Method of cleaning papermaking felts with enzymes
AU4067297A (en) * 1996-08-16 1998-03-06 International Paper Company Enzymatic freeness enhancement
US6296736B1 (en) 1997-10-30 2001-10-02 Kimberly-Clark Worldwide, Inc. Process for modifying pulp from recycled newspapers
US6146494A (en) * 1997-06-12 2000-11-14 The Procter & Gamble Company Modified cellulosic fibers and fibrous webs containing these fibers
US6387210B1 (en) 1998-09-30 2002-05-14 Kimberly-Clark Worldwide, Inc. Method of making sanitary paper product from coarse fibers
US20030051836A1 (en) * 2001-05-21 2003-03-20 Novozymes A/S Enzymatic hydrolysis of a polymer comprising vinyl acetate monomer
US7922705B2 (en) * 2005-10-03 2011-04-12 The Procter & Gamble Company Densified fibrous structures and methods for making same
CA2666100A1 (en) * 2005-10-11 2007-04-19 Earnest Stuart Device and method for treating biomass
US20110108222A1 (en) * 2009-11-11 2011-05-12 International Paper Company Effect of low dose xylanase on pulp in prebleach treatment process
CN107881825B (zh) * 2017-11-17 2019-10-18 苏州博进生物技术有限公司 以烟花爆竹燃放产生垃圾为主的废屑的微生物处理方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2604190B1 (fr) * 1986-09-19 1988-12-30 Carre Remy Machine de recristallisation d'une couche mince par zone fondue
FR2604198B1 (fr) * 1986-09-22 1989-07-07 Du Pin Cellulose Procede de traitement d'une pate papetiere par une solution enzymatique.
FR2629108A1 (fr) * 1988-03-22 1989-09-29 Du Pin Cellulose Procede de fabrication de papiers ou cartons a partir de fibres recyclees, traitees avec des enzymes

Also Published As

Publication number Publication date
CA2026652A1 (fr) 1991-04-03
FR2652595A1 (fr) 1991-04-05
FI101722B (fi) 1998-08-14
DE69015095T2 (de) 1995-07-27
NO904266D0 (no) 1990-10-01
GR3015285T3 (en) 1995-06-30
ES2068360T3 (es) 1995-04-16
FR2652595B1 (fr) 1995-03-31
US5116474A (en) 1992-05-26
NO176617B (no) 1995-01-23
ATE115661T1 (de) 1994-12-15
FI101722B1 (fi) 1998-08-14
JPH03124891A (ja) 1991-05-28
NO904266L (no) 1991-04-03
DE69015095D1 (de) 1995-01-26
FI904843A0 (fi) 1990-10-01
EP0421843A1 (fr) 1991-04-10
NO176617C (no) 1995-05-03

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