SE546698C2 - A method for producing microfibrillated cellulose - Google Patents
A method for producing microfibrillated celluloseInfo
- Publication number
- SE546698C2 SE546698C2 SE2330252A SE2330252A SE546698C2 SE 546698 C2 SE546698 C2 SE 546698C2 SE 2330252 A SE2330252 A SE 2330252A SE 2330252 A SE2330252 A SE 2330252A SE 546698 C2 SE546698 C2 SE 546698C2
- Authority
- SE
- Sweden
- Prior art keywords
- pulp suspension
- pulp
- enzyme
- refined
- treated
- Prior art date
Links
- 229920002678 cellulose Polymers 0.000 title claims abstract 3
- 239000001913 cellulose Substances 0.000 title claims abstract 3
- 238000004519 manufacturing process Methods 0.000 title claims abstract 3
- 239000000725 suspension Substances 0.000 claims abstract 14
- 108090000790 Enzymes Proteins 0.000 claims abstract 7
- 102000004190 Enzymes Human genes 0.000 claims abstract 7
- 238000002156 mixing Methods 0.000 claims abstract 4
- 239000007800 oxidant agent Substances 0.000 claims abstract 3
- 230000001590 oxidative effect Effects 0.000 claims abstract 3
- 230000003647 oxidation Effects 0.000 claims abstract 2
- 238000007254 oxidation reaction Methods 0.000 claims abstract 2
- 238000000034 method Methods 0.000 claims 13
- KFSLWBXXFJQRDL-UHFFFAOYSA-N Peracetic acid Chemical compound CC(=O)OO KFSLWBXXFJQRDL-UHFFFAOYSA-N 0.000 claims 4
- 229940088598 enzyme Drugs 0.000 claims 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims 3
- 239000000835 fiber Substances 0.000 claims 2
- 108010059892 Cellulase Proteins 0.000 claims 1
- 229920002488 Hemicellulose Polymers 0.000 claims 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims 1
- 239000005708 Sodium hypochlorite Substances 0.000 claims 1
- 229920002472 Starch Polymers 0.000 claims 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims 1
- 229940106157 cellulase Drugs 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 238000000265 homogenisation Methods 0.000 claims 1
- 230000003301 hydrolyzing effect Effects 0.000 claims 1
- 239000002655 kraft paper Substances 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- 229910052760 oxygen Inorganic materials 0.000 claims 1
- 239000001301 oxygen Substances 0.000 claims 1
- 239000010817 post-consumer waste Substances 0.000 claims 1
- 239000012286 potassium permanganate Substances 0.000 claims 1
- 239000010864 pre-consumer waste Substances 0.000 claims 1
- 238000007670 refining Methods 0.000 claims 1
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 claims 1
- 239000008107 starch Substances 0.000 claims 1
- 235000019698 starch Nutrition 0.000 claims 1
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
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/001—Modification of pulp properties
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L1/00—Compositions of cellulose, modified cellulose or cellulose derivatives
- C08L1/02—Cellulose; Modified cellulose
-
- 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
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
-
- 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
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/001—Modification of pulp properties
- D21C9/002—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives
-
- 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
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/001—Modification of pulp properties
- D21C9/007—Modification of pulp properties by mechanical or physical means
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
- D21H11/16—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only modified by a particular after-treatment
- D21H11/18—Highly hydrated, swollen or fibrillatable fibres
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N9/00—Enzymes; Proenzymes; Compositions thereof; Processes for preparing, activating, inhibiting, separating or purifying enzymes
- C12N9/14—Hydrolases (3)
- C12N9/24—Hydrolases (3) acting on glycosyl compounds (3.2)
- C12N9/2402—Hydrolases (3) acting on glycosyl compounds (3.2) hydrolysing O- and S- glycosyl compounds (3.2.1)
- C12N9/2405—Glucanases
- C12N9/2434—Glucanases acting on beta-1,4-glucosidic bonds
- C12N9/2437—Cellulases (3.2.1.4; 3.2.1.74; 3.2.1.91; 3.2.1.150)
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N9/00—Enzymes; Proenzymes; Compositions thereof; Processes for preparing, activating, inhibiting, separating or purifying enzymes
- C12N9/99—Enzyme inactivation by chemical treatment
-
- 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
- C12P2201/00—Pretreatment of cellulosic or lignocellulosic material for subsequent enzymatic treatment or hydrolysis
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/005—Microorganisms or enzymes
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Biochemistry (AREA)
- Microbiology (AREA)
- Paper (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
Abstract
The present document discloses a method for producing microfibrillated cellulose (MFC) comprising the steps of:a) provide a refined pulp suspension (P) mixed with an enzyme to a reactor tank (2);b) treat the refined pulp suspension with said enzyme in the reactor tank at a temperature between 40-80°C under controlled mixing by means of an agitating member (7) thus forming a pre-treated pulp suspension;c) adding at least one oxidant (4) to said pre-treated pulp suspension simultaneous to mixing;d) perform oxidation of said pre-treated pulp suspension under elevated temperatures >80°C in said reactor tank for deactivating said enzyme; and e) discharge the pre-treated, pre-refined pulp suspension and subjecting it to further mechanical treatment (6) to obtain MFC.
Claims (14)
1. A method for producing microfibrillated cellulose (MFC) comprising the steps of: a) provide a refined pulp suspension_,;§,§§§_§=_ mixed with an enzyme a reacto r ta n b) treat§;;j=,gj¿_ the refined pulp suspension with said enzyme in the reactor tank at a temperature between 40-80°C under controlled mixing by means of an agitating memberglšfiljg thus forming a pre-treated pulp suspension; c) adding at least one oxidant said pre-treated pulp suspension simultaneous to mixing; d) perform oxidation of said pre-treated pulp suspension under elevated temperatures >80°C in said reactor tank\¿§§¿ïj_i;_ for deactivating said enzyme; and e) discharge the pre-treated, pre-refined pulp suspension and subjecting it to further mechanical treatment___sj¿§§_}_ to obtain MFC.
2. A method according to claim 1, wherein the consistency of the pulp suspension step a) is between 3.5-8wt %.
3. A method according to claim 1, wherein said refined pulp suspension in step a) is bleached kraft pulp with Kappa <25 and hemicellulose content >5%.
4. A method according to claim 1, wherein said refined pulp is recycled material including post-consumer waste or pre-consumer waste.
5. A method according to claim 1, wherein said refined pulp suspension in step a) has a Schopper-Riegler (SR) value between 15-40, preferably between 15-
6. A method according to claim 1, wherein said enzyme is a hydrolysing agent, preferably cellulase.
7. A method according to claim 1, comprising addition of starch between steps b) and c).
8. A method according to claim 1, wherein said oxidant is selected from the group comprising H2O2, peracetic acid (PAA), oxygen (Oz), ozone (Os), NaOH, sodium hypochlorite, potassium permanganate and combinations thereof.
9. A method according to claim 1, wherein the temperature of the content in the reactor tank__;:§;§§g in step c) is between 45-100°C, such as between 70- 90°C.
10. A method according to claim 1, wherein the further mechanical treatment step e) is homogenization and / or refining.
11. A method according to claim 1, where the agitating membergjig-flš is a spiral mixer.
12. A method according to claim 1, where the fiber length LC (l) of the pulp after the step d) is 0.2-2 mm, preferably 0.3-1.7 mm measured with FS5 fiber analyzer.
13. A method according to claim 1, wherein the amount of Fe in the pulp after treatment is less than 20 mg/kg and more preferably less than 15 mg/kg based on dry pulp.
14. A method according to claim 1, wherein the amount of cupper in the pulp after treatment is less than 0.15 mg/kg based on dry pulp.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE2330252A SE546698C2 (en) | 2023-06-02 | 2023-06-02 | A method for producing microfibrillated cellulose |
| PCT/IB2024/055203 WO2024246763A1 (en) | 2023-06-02 | 2024-05-29 | A method and a system for producing microfibrillated cellulose |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE2330252A SE546698C2 (en) | 2023-06-02 | 2023-06-02 | A method for producing microfibrillated cellulose |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| SE2330252A1 SE2330252A1 (en) | 2024-12-03 |
| SE546698C2 true SE546698C2 (en) | 2025-02-11 |
Family
ID=93656854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE2330252A SE546698C2 (en) | 2023-06-02 | 2023-06-02 | A method for producing microfibrillated cellulose |
Country Status (2)
| Country | Link |
|---|---|
| SE (1) | SE546698C2 (en) |
| WO (1) | WO2024246763A1 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015177548A1 (en) * | 2014-05-21 | 2015-11-26 | Cellucomp Ltd | Cellulose microfibrils |
| JP2018048237A (en) * | 2016-09-20 | 2018-03-29 | 大王製紙株式会社 | Cellulose nanofiber production device and method for producing cellulose nanofiber |
| JP2018071015A (en) * | 2016-10-27 | 2018-05-10 | 大王製紙株式会社 | Pulp fiber pretreatment device, cellulose nanofiber production device, and cellulose nanofiber production method |
| CN112376305A (en) * | 2020-10-12 | 2021-02-19 | 华南理工大学 | Plant cellulose nano-fibril and green preparation method thereof |
-
2023
- 2023-06-02 SE SE2330252A patent/SE546698C2/en unknown
-
2024
- 2024-05-29 WO PCT/IB2024/055203 patent/WO2024246763A1/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015177548A1 (en) * | 2014-05-21 | 2015-11-26 | Cellucomp Ltd | Cellulose microfibrils |
| JP2018048237A (en) * | 2016-09-20 | 2018-03-29 | 大王製紙株式会社 | Cellulose nanofiber production device and method for producing cellulose nanofiber |
| JP2018071015A (en) * | 2016-10-27 | 2018-05-10 | 大王製紙株式会社 | Pulp fiber pretreatment device, cellulose nanofiber production device, and cellulose nanofiber production method |
| CN112376305A (en) * | 2020-10-12 | 2021-02-19 | 华南理工大学 | Plant cellulose nano-fibril and green preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| HENRIKSSON, M., HENRIKSSON, G., BERGLUND, L.A., LINDSTRÖM, T. "An environmentally friendly method for enzyme-assisted preparation of microfibrillated cellulose (MFC) nanofibers" In: European Polymer Journal, 2007, Vol. 43, pp. 3434-3441, DOI: 10.1016/j.eurpolymj.2007.05.038 * |
| PÄÄKKÖ, M. et al. "Enzymatic hydrolysis combined with mechanical shearing and high-pressure homogenization for nanoscale cellulose fibrils and strong gels" In: Biomacromolecules, 2007, Vol. 8, pp. 1934-1941, DOI: 10.1021/BM061215P * |
Also Published As
| Publication number | Publication date |
|---|---|
| SE2330252A1 (en) | 2024-12-03 |
| WO2024246763A1 (en) | 2024-12-05 |
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