CN1296099A - Method for all chlorine free bleaching paper pulp by biological technology - Google Patents
Method for all chlorine free bleaching paper pulp by biological technology Download PDFInfo
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- CN1296099A CN1296099A CN 00130853 CN00130853A CN1296099A CN 1296099 A CN1296099 A CN 1296099A CN 00130853 CN00130853 CN 00130853 CN 00130853 A CN00130853 A CN 00130853A CN 1296099 A CN1296099 A CN 1296099A
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- 238000004061 bleaching Methods 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 21
- 229920001131 Pulp (paper) Polymers 0.000 title claims description 49
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 title claims description 10
- 239000000460 chlorine Substances 0.000 title claims description 10
- 229910052801 chlorine Inorganic materials 0.000 title claims description 9
- 238000009897 hydrogen peroxide bleaching Methods 0.000 claims abstract description 9
- 230000009920 chelation Effects 0.000 claims abstract description 8
- 230000001580 bacterial effect Effects 0.000 claims abstract description 5
- 229910021645 metal ion Inorganic materials 0.000 claims abstract description 4
- 239000002002 slurry Substances 0.000 claims description 22
- 241000233866 Fungi Species 0.000 claims description 13
- 241001093501 Rutaceae Species 0.000 claims description 9
- 241000207961 Sesamum Species 0.000 claims description 9
- 235000003434 Sesamum indicum Nutrition 0.000 claims description 9
- 241000222355 Trametes versicolor Species 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 8
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 6
- 239000003518 caustics Substances 0.000 claims description 6
- 244000158441 Pleurotus sajor caju Species 0.000 claims description 5
- 235000004116 Pleurotus sajor caju Nutrition 0.000 claims description 5
- 210000005069 ears Anatomy 0.000 claims description 5
- 239000002655 kraft paper Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 230000000813 microbial effect Effects 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 2
- 230000002906 microbiologic effect Effects 0.000 claims description 2
- 235000015097 nutrients Nutrition 0.000 claims description 2
- 239000011122 softwood Substances 0.000 claims description 2
- 229910021653 sulphate ion Inorganic materials 0.000 claims description 2
- 239000002023 wood Substances 0.000 claims description 2
- 239000002351 wastewater Substances 0.000 abstract description 5
- 241000894006 Bacteria Species 0.000 abstract description 4
- 244000005700 microbiome Species 0.000 abstract description 4
- 238000006386 neutralization reaction Methods 0.000 abstract 1
- 231100000167 toxic agent Toxicity 0.000 abstract 1
- 239000003440 toxic substance Substances 0.000 abstract 1
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 20
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 18
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 13
- 229960001484 edetic acid Drugs 0.000 description 13
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 6
- 239000008367 deionised water Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 6
- 235000019341 magnesium sulphate Nutrition 0.000 description 6
- 230000001954 sterilising effect Effects 0.000 description 6
- 238000004659 sterilization and disinfection Methods 0.000 description 6
- 108090000790 Enzymes Proteins 0.000 description 5
- 102000004190 Enzymes Human genes 0.000 description 5
- 108010029541 Laccase Proteins 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 229920005610 lignin Polymers 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 241000209140 Triticum Species 0.000 description 4
- 235000021307 Triticum Nutrition 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 4
- 238000006731 degradation reaction Methods 0.000 description 4
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 description 4
- 239000010902 straw Substances 0.000 description 4
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- 239000004155 Chlorine dioxide Substances 0.000 description 2
- 244000166124 Eucalyptus globulus Species 0.000 description 2
- 235000014676 Phragmites communis Nutrition 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 235000019398 chlorine dioxide Nutrition 0.000 description 2
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical compound Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 description 2
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 2
- 150000004045 organic chlorine compounds Chemical class 0.000 description 2
- 238000004076 pulp bleaching Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- ISPYQTSUDJAMAB-UHFFFAOYSA-N 2-chlorophenol Chemical class OC1=CC=CC=C1Cl ISPYQTSUDJAMAB-UHFFFAOYSA-N 0.000 description 1
- 108010059896 Manganese peroxidase Proteins 0.000 description 1
- WAEMQWOKJMHJLA-UHFFFAOYSA-N Manganese(2+) Chemical compound [Mn+2] WAEMQWOKJMHJLA-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 230000000680 avirulence Effects 0.000 description 1
- OHDRQQURAXLVGJ-HLVWOLMTSA-N azane;(2e)-3-ethyl-2-[(e)-(3-ethyl-6-sulfo-1,3-benzothiazol-2-ylidene)hydrazinylidene]-1,3-benzothiazole-6-sulfonic acid Chemical compound [NH4+].[NH4+].S/1C2=CC(S([O-])(=O)=O)=CC=C2N(CC)C\1=N/N=C1/SC2=CC(S([O-])(=O)=O)=CC=C2N1CC OHDRQQURAXLVGJ-HLVWOLMTSA-N 0.000 description 1
- 239000002738 chelating agent Substances 0.000 description 1
- JFBJUMZWZDHTIF-UHFFFAOYSA-N chlorine chlorite Inorganic materials ClOCl=O JFBJUMZWZDHTIF-UHFFFAOYSA-N 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 239000004310 lactic acid Substances 0.000 description 1
- 235000014655 lactic acid Nutrition 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 229910001437 manganese ion Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000033116 oxidation-reduction process Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229920001221 xylan Polymers 0.000 description 1
- 150000004823 xylans Chemical class 0.000 description 1
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- Paper (AREA)
Abstract
The chlorine-free bleaching method utilizing microorganism to pretreat pulp includes the following steps: 1. white rot bacteria is used as bacterial strain for pretreatment, hyphal liquor of white rot bacteria is added into sterilized pulp to make pretreatment, and its added quantity (by dry weight) is 0.01%-1% of dried pulp weight; 2. chelation treatment of pulp treated by microorganism under the condition of neutralization for removing metal ion; and 3. hydrogen peroxide bleaching. Said invention can obviously raise whiteness of pulp, can retain pulp performance, does not produce toxic compound and its waste water and pollution are small.
Description
The present invention relates to a kind of method for bleaching of paper pulp, particularly utilize biotechnology paper pulp to be carried out the method for total chlorine free bleaching.
Traditional dioxde pulp bleaching process makes and adopts the bleaching schedule (CEH) that contains chlorine and hypochlorite.Yet, contain a large amount of hypertoxic chlorophenol compounds in the waste water that this method produced, force people that this traditional method for bleaching is improved.In recent years, utilize chlorine dioxide to replace the method for bleaching of the element-free chlorine of chlorine to obtain significant progress.But this method still can produce organochlorine compound in waste water, along with the more and more concern of people to environment, and the technology of various chlorine-free bleachings, as oxygen delignification, hydrogen peroxide bleaching, ozone bleachings etc. obtain certain development.But the equipment investment that these methods have is expensive, and the poor selectivity that has have destruction to fiber.
At first biology enzyme is introduced association with pulp bleaching and is 1986 Wei Kaili (Viikari) utilize the zytase pulp treatment can improve the bleachability of paper pulp, reduce the consumption of chemicalss such as chlorine, chlorine dioxide, hydrogen peroxide, help developing element chlorine free bleaching (ECF).But because zytase can not the direct oxidation lignin, can only improve the bleachability of paper pulp by the hydrolysis xylan, removing of lignin is limited.
Utilize laccase to carry out delignified pulp lignin processing research many reports are arranged in the world.European patent (EP-A-408,803) discloses a kind of method and has utilized laccase and chloride compound bleached pulp, can reduce the consumption of chemicals, but the waste water that is produced still contains a spot of organochlorine compound; European patent (DE-A-3,636,208) discloses can delignification or bleached pulp with the lignin degradation enzyme; In addition, also have patent (EP-A-447,673, W092/20857) report utilizes laccase and oxidation-reduction potential in the presence of the chemical substance of 0.2-0.5V, has good delignification.
Recently, (US 5 for United States Patent (USP), 691,193) disclose and utilized biology enzyme and hydrogen peroxide total chlorine free bleaching, enzyme is handled and is comprised laccase/amboceptor (ABTS or other laccase substrate) in its report, or rely on chelating agents such as manganese peroxidase/manganese ion/lactic acid or oxalic acid and add a spot of hydrogen peroxide, remove metal ion through chelation treatment then, and alkaline hydrogen peroxide bleaching.
Purpose of the present invention provides a kind of new biotechnology of utilizing that paper pulp is carried out fully chlorine-free bleaching method, can keep the intensity of paper pulp, can improve the fully chlorine-free bleaching method of the whiteness of paper pulp again.
The fully chlorine-free bleaching method that utilizes microbial pretreatment paper pulp of the present invention utilizes a kind of microorganism-whiterot fungi pulp treatment that can xylogen degradation, and the control appropriate condition can keep the intensity of paper pulp, can improve the fully chlorine-free bleaching method of the whiteness of paper pulp again.An off-white color wood-decaying fungus of Basidiomycotina in the fungi (white-rot fungus is called for short whiterot fungi) can produce the lignin degradation enzyme, and xylogen degradation, therefore can be used for the bleaching preliminary treatment of paper pulp.The microbial pretreatment, chelation treatment, the hydrogen peroxide bleaching that comprise paper pulp.Comprise the following steps successively and process conditions:
(1) whiterot fungi is the preliminary treatment bacterial classification, with dry weight basis, the whiterot fungi mycelia liquid that adding accounts for paper pulp oven dry weight 0.01%-1% is in sterilized paper pulp, and the weight percentage of water is 50%-80% in the paper pulp, washes with water after 3～6 days temperature 25-30 ℃ of following preliminary treatment;
(2) chelation treatment: through the paper pulp of microbiological treatment, chelation treatment is removed metal ion under neutrallty condition;
(3) hydrogen peroxide bleaching: alkaline hydrogen peroxide bleaching.
The microorganism of pretreating paper pulp of the present invention is a whiterot fungi, as the variegated sesame that rues (Polystictus versicolor), the funnel-form bacterial classifications such as (Pleurotus sajor-caju) of picking up the ears, can be before pulp treatment pre-the cultivation 3-5 days in the fluid nutrient medium.The preferred variegated sesame that rues (Polystictus versicolor).Whiterot fungi is common edible bacterium mostly, can obtain from the edible bacterium unit of providing.The variegated sesame that rues (Polystictus versicolor), funnel-form pick up the ears (Pleurotus sajor-caju) be commonly used, commercially available bacterial classification, can ask for to China Committee for Culture Collection of Microorganisms agricultural microorganism center.
The present invention is applicable to various paper pulp, as the oxygen-delignified pulp of broad-leaved wood sulphate pulp, softwood kraft pulp, non-timber sulfate pulp, non-timber caustic soda-anthraquinone slurry and above-mentioned paper pulp etc.
Outstanding advantage of the present invention is: (a) whiteness of paper pulp improves significantly, and after hydrogen peroxide floated eventually, pulp brightness can reach 83%ISO; (b) property retention of paper pulp is constant; (c) the avirulence compound produces, and waste water is few, pollutes for a short time, and social benefit is big.
All percentage compositions are weight percentage in following examples.
Embodiment 1
Reed reed caustic soda-anthraquinone slurry bleaching:
Reed reed caustic soda-anthraquinone slurry (Kappa number 11.92) is after sterilization, and moisture is 80%, sesame (Polystictusversicolor) the mycelia liquid that rues that adds Noise, and wherein the weight mycelia dry weight of absolute dried paper pulp is 0.1% relatively; At 28 ℃; Fermented 3 days.Clean then.
Paper pulp after Biological Pretreatment, dense 10% at slurry, pH6.5, under 50 ℃ of conditions with ethylenediamine tetra-acetic acid (EDTA) (1.0%) effect 30min.Spend deionised water then, it is dense 10% to regulate slurry again, and at 90 ℃, with hydroperoxidation 2 hours, sodium hydroxide concentration 2.0% in the reaction system, and hydrogen peroxide consumption 2.0% also adds 0.5% magnesium sulfate and 0.2%EDTA in addition.The whiteness of final paper pulp reaches 75%ISO.
Embodiment 2
Wheat straw soda-anthraquinone slurry bleaching:
Wheat straw soda-anthraquinone slurry (Kappa number 10.52) is after sterilization, and moisture is 70%, adds funnel-form (Pleurotussajor-caju) mycelia liquid of picking up the ears, and wherein the weight mycelia dry weight of absolute dried paper pulp is 0.05% relatively; At 28 ℃; Fermented 6 days.Clean then.
Paper pulp after Biological Pretreatment, dense 10% at slurry, pH6.5, under 50 ℃ of conditions with EDTA (1.0%) effect 30min.Spend deionised water then, it is dense 10% to regulate slurry again, and at 90 ℃, with hydroperoxidation 2 hours, sodium hydroxide concentration 2.0% in the reaction system, and hydrogen peroxide consumption 2.0% also adds 0.5% magnesium sulfate and 0.2%EDTA in addition.The whiteness of final paper pulp reaches 79%ISO.
Embodiment 3
Oxygen delignification wheat straw soda-anthraquinone slurry bleaching:
The oxygen delignification wheat straw soda-anthraquinone slurry (Kappa number 5.62) is after sterilization, and moisture is 80%, sesame (Polystictus versicolor) the mycelia liquid that rues that adds Noise, and wherein the weight mycelia dry weight of absolute dried paper pulp is 0.01% relatively; At 28 ℃; Fermented 6 days.Clean then.
Paper pulp after Biological Pretreatment, dense 10% at slurry, pH6.5, under 50 ℃ of conditions with EDTA (1.0%) effect 30min.Spend deionised water then, it is dense 10% to regulate slurry again, and at 90 ℃, with hydroperoxidation 2 hours, sodium hydroxide concentration 2.0% in the reaction system, and hydrogen peroxide consumption 2.0% also adds 0.5% magnesium sulfate and 0.2%EDTA in addition.The whiteness of final paper pulp reaches 83.7%ISO.
Embodiment 4
Oxygen delignification reed reed caustic soda-anthraquinone slurry bleaching:
Oxygen delignification reed reed caustic soda-anthraquinone slurry (Kappa number 6.18) is after sterilization, and moisture is 80%, sesame (Polystictus versicolor) the mycelia liquid that rues that adds Noise, and wherein the weight mycelia dry weight of absolute dried paper pulp is 0.05% relatively; At 28 ℃; Fermented 3 days.Clean then.
Paper pulp after Biological Pretreatment, dense 10% at slurry, pH6.5, under 50 ℃ of conditions with EDTA (1.0%) effect 30min.Spend deionised water then, it is dense 10% to regulate slurry again, and at 90 ℃, with hydroperoxidation 2 hours, sodium hydroxide concentration 2.0% in the reaction system, and hydrogen peroxide consumption 2.0% also adds 0.5% magnesium sulfate and 0.2%EDTA in addition.The whiteness of final paper pulp reaches 84.1%ISO.
Embodiment 5
The reed kraft bleaching:
Reed sulfate pulp (Kappa number 15.52) is after sterilization, and moisture is 60%, adds funnel-form (Pleurotussajor-caju) mycelia liquid of picking up the ears, and wherein the weight mycelia dry weight of absolute dried paper pulp is 1% relatively; At 28 ℃; Fermented 6 days.Clean then.
Paper pulp after Biological Pretreatment, dense 10% at slurry, pH6.5, under 50 ℃ of conditions with EDTA (1.0%) effect 30min.Spend deionised water then, it is dense 10% to regulate slurry again, and at 90 ℃, with hydroperoxidation 2 hours, sodium hydroxide concentration 2.0% in the reaction system, and hydrogen peroxide consumption 2.0% also adds 0.5% magnesium sulfate and 0.2%EDTA in addition.The whiteness of final paper pulp reaches 74%ISO.
Embodiment 6
The Eucalyptus kraft bleaching:
Eucalyptus sulfate pulp (Kappa number 13.50) is after sterilization, and moisture is 50%, sesame (Polystictusversicolor) the mycelia liquid that rues that adds Noise, and wherein the weight mycelia dry weight of absolute dried paper pulp is 0.5% relatively; At 28 ℃; Fermented 6 days.Clean then.
Paper pulp after Biological Pretreatment, dense 10% at slurry, pH6.5, under 50 ℃ of conditions with EDTA (1.0%) effect 30min.Spend deionised water then, it is dense 10% to regulate slurry again, and at 90 ℃, with hydroperoxidation 2 hours, sodium hydroxide concentration 2.0% in the reaction system, and hydrogen peroxide consumption 2.0% also adds 0.5% magnesium sulfate and 0.2%EDTA in addition.The whiteness of final paper pulp reaches 84%ISO.
Claims (4)
1, a kind of biotechnology of utilizing is carried out the method for total chlorine free bleaching to paper pulp, comprises microbial pretreatment, chelation treatment, the hydrogen peroxide bleaching of paper pulp, it is characterized in that comprising the following steps: successively
(1) whiterot fungi is the preliminary treatment bacterial classification, with dry weight basis, the whiterot fungi mycelia liquid that adding accounts for paper pulp oven dry weight 0.01%-1% is in sterilized paper pulp, and the weight percentage of water is 50%-80% in the paper pulp, washes with water after 3～6 days temperature 25-30 ℃ of following preliminary treatment;
(2) chelation treatment: through the paper pulp of microbiological treatment, chelation treatment is removed metal ion under neutrallty condition;
(3) hydrogen peroxide bleaching: alkaline hydrogen peroxide bleaching.
2,, it is characterized in that described whiterot fungi is variegated sesame that rues (Polystictusversicolor) or funnel-form pick up the ears (Pleurotus sajor-caju), the pre-cultivation 3-5 days in the fluid nutrient medium before pulp treatment according to the method described in the claim 1.
3,, it is characterized in that described whiterot fungi is the variegated sesame that rues (Polystictusversicolor) according to the method described in claim 1 or 2.
4,, it is characterized in that described paper pulp is the oxygen-delignified pulp of broad-leaved wood sulphate pulp, softwood kraft pulp, non-timber sulfate pulp, non-timber caustic soda-anthraquinone slurry or above-mentioned paper pulp according to the method described in claim 1 or 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00130853A CN1115437C (en) | 2000-12-14 | 2000-12-14 | Method for all chlorine free bleaching paper pulp by biological technology |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00130853A CN1115437C (en) | 2000-12-14 | 2000-12-14 | Method for all chlorine free bleaching paper pulp by biological technology |
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| Publication Number | Publication Date |
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| CN1296099A true CN1296099A (en) | 2001-05-23 |
| CN1115437C CN1115437C (en) | 2003-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN00130853A Expired - Fee Related CN1115437C (en) | 2000-12-14 | 2000-12-14 | Method for all chlorine free bleaching paper pulp by biological technology |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1804209B (en) * | 2004-09-13 | 2010-05-05 | 葛文宇 | Zero-discharge non-pollution combined production process for ecological paper pulp |
| CN101105011B (en) * | 2004-01-17 | 2010-05-12 | 梅秀泉 | Oxygen delignification and bleaching integration paste preparing method and device for realizing the same method |
| CN102877346A (en) * | 2012-10-23 | 2013-01-16 | 山东轻工业学院 | Totally chlorine-free bleaching process using coniferous and broadleaf mixed sulfate chemical pulp |
| CN102926261A (en) * | 2012-10-23 | 2013-02-13 | 山东轻工业学院 | Total-chlorine-free bleaching process of coniferous wood and broadleaf wood mixed sodium hydroxide anthraquinone chemical pulp |
| CN104611964A (en) * | 2015-01-15 | 2015-05-13 | 陕西科技大学 | Acacia mangium sulfite method based high-brightness semi-chemical pulp producing method |
| CN106192517A (en) * | 2016-07-08 | 2016-12-07 | 华南理工大学 | A kind of reduce the method that oxalate is formed during oxygen delignification |
| CN106283800A (en) * | 2016-09-29 | 2017-01-04 | 金华盛纸业（苏州工业园区）有限公司 | A kind of method of biological pretreatment slurry before defibrination |
| CN113025497A (en) * | 2021-01-28 | 2021-06-25 | 南京中医药大学 | Bacterial strain for efficiently degrading anthraquinone dyes and method for improving decoloring efficiency by using traditional Chinese medicine waste residues |
| CN115369690A (en) * | 2022-08-05 | 2022-11-22 | 浙江唐丰特种纸有限公司 | Production process of low-heavy-metal-content yellow tipping base paper for cigarettes |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5427945A (en) * | 1988-11-23 | 1995-06-27 | Sandoz Ltd. | White-rot fungus and uses thereof |
| US5460697A (en) * | 1992-10-09 | 1995-10-24 | Wisconsin Alumni Research Foundation | Method of pulping wood chips with a fungi using sulfite salt-treated wood chips |
-
2000
- 2000-12-14 CN CN00130853A patent/CN1115437C/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101105011B (en) * | 2004-01-17 | 2010-05-12 | 梅秀泉 | Oxygen delignification and bleaching integration paste preparing method and device for realizing the same method |
| CN1804209B (en) * | 2004-09-13 | 2010-05-05 | 葛文宇 | Zero-discharge non-pollution combined production process for ecological paper pulp |
| CN102877346A (en) * | 2012-10-23 | 2013-01-16 | 山东轻工业学院 | Totally chlorine-free bleaching process using coniferous and broadleaf mixed sulfate chemical pulp |
| CN102926261A (en) * | 2012-10-23 | 2013-02-13 | 山东轻工业学院 | Total-chlorine-free bleaching process of coniferous wood and broadleaf wood mixed sodium hydroxide anthraquinone chemical pulp |
| CN102877346B (en) * | 2012-10-23 | 2014-03-12 | 山东轻工业学院 | Totally chlorine-free bleaching process using coniferous and broadleaf mixed sulfate chemical pulp |
| CN102926261B (en) * | 2012-10-23 | 2014-05-07 | 山东轻工业学院 | Total-chlorine-free bleaching process of coniferous wood and broadleaf wood mixed sodium hydroxide anthraquinone chemical pulp |
| CN104611964A (en) * | 2015-01-15 | 2015-05-13 | 陕西科技大学 | Acacia mangium sulfite method based high-brightness semi-chemical pulp producing method |
| CN104611964B (en) * | 2015-01-15 | 2016-04-20 | 陕西科技大学 | A kind of pulping process of Acacia sulphite process high whiteness semi-chemical pulp |
| CN106192517A (en) * | 2016-07-08 | 2016-12-07 | 华南理工大学 | A kind of reduce the method that oxalate is formed during oxygen delignification |
| CN106283800A (en) * | 2016-09-29 | 2017-01-04 | 金华盛纸业（苏州工业园区）有限公司 | A kind of method of biological pretreatment slurry before defibrination |
| CN113025497A (en) * | 2021-01-28 | 2021-06-25 | 南京中医药大学 | Bacterial strain for efficiently degrading anthraquinone dyes and method for improving decoloring efficiency by using traditional Chinese medicine waste residues |
| CN113025497B (en) * | 2021-01-28 | 2022-02-15 | 南京中医药大学 | Bacterial strain for efficiently degrading anthraquinone dyes and method for improving decoloring efficiency by using traditional Chinese medicine waste residues |
| CN115369690A (en) * | 2022-08-05 | 2022-11-22 | 浙江唐丰特种纸有限公司 | Production process of low-heavy-metal-content yellow tipping base paper for cigarettes |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1115437C (en) | 2003-07-23 |
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