CN103254443B - Preparation method of textile waste cellulose based sewage flocculant - Google Patents
Preparation method of textile waste cellulose based sewage flocculant Download PDFInfo
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- 229920002678 cellulose Polymers 0.000 title claims abstract description 47
- 239000001913 cellulose Substances 0.000 title claims abstract description 47
- 239000010865 sewage Substances 0.000 title claims abstract description 33
- 239000010784 textile waste Substances 0.000 title claims abstract description 29
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 239000003999 initiator Substances 0.000 claims abstract description 13
- 229920002401 polyacrylamide Polymers 0.000 claims abstract description 13
- 238000010559 graft polymerization reaction Methods 0.000 claims abstract description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 30
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 20
- 238000006243 chemical reaction Methods 0.000 claims description 11
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 claims description 10
- 229960001760 dimethyl sulfoxide Drugs 0.000 claims description 10
- 230000007935 neutral effect Effects 0.000 claims description 10
- 229910052757 nitrogen Inorganic materials 0.000 claims description 10
- LFTLOKWAGJYHHR-UHFFFAOYSA-N N-methylmorpholine N-oxide Chemical compound CN1(=O)CCOCC1 LFTLOKWAGJYHHR-UHFFFAOYSA-N 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000004160 Ammonium persulphate Substances 0.000 claims description 5
- 238000013019 agitation Methods 0.000 claims description 5
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical group [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 5
- 235000019395 ammonium persulphate Nutrition 0.000 claims description 5
- 239000012153 distilled water Substances 0.000 claims description 5
- 230000008595 infiltration Effects 0.000 claims description 5
- 238000001764 infiltration Methods 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 235000019353 potassium silicate Nutrition 0.000 claims description 5
- 235000019830 sodium polyphosphate Nutrition 0.000 claims description 5
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 229920000742 Cotton Polymers 0.000 claims description 3
- 241000208202 Linaceae Species 0.000 claims description 3
- 235000004431 Linum usitatissimum Nutrition 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 6
- 239000002994 raw material Substances 0.000 abstract description 6
- 239000002351 wastewater Substances 0.000 abstract description 5
- 239000003208 petroleum Substances 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract description 4
- 239000004753 textile Substances 0.000 abstract description 3
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 abstract description 2
- 238000009835 boiling Methods 0.000 abstract description 2
- 238000004043 dyeing Methods 0.000 abstract description 2
- 238000005189 flocculation Methods 0.000 description 16
- 230000016615 flocculation Effects 0.000 description 13
- 239000003795 chemical substances by application Substances 0.000 description 7
- 239000008394 flocculating agent Substances 0.000 description 7
- 239000007900 aqueous suspension Substances 0.000 description 5
- 229920000642 polymer Polymers 0.000 description 5
- WFDIJRYMOXRFFG-UHFFFAOYSA-N Acetic anhydride Chemical compound CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229920002521 macromolecule Polymers 0.000 description 3
- 239000000178 monomer Substances 0.000 description 3
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- ROSDSFDQCJNGOL-UHFFFAOYSA-N Dimethylamine Chemical compound CNC ROSDSFDQCJNGOL-UHFFFAOYSA-N 0.000 description 2
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 125000002091 cationic group Chemical group 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000003311 flocculating effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 230000002194 synthesizing effect Effects 0.000 description 2
- LRWZZZWJMFNZIK-UHFFFAOYSA-N 2-chloro-3-methyloxirane Chemical compound CC1OC1Cl LRWZZZWJMFNZIK-UHFFFAOYSA-N 0.000 description 1
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 description 1
- 229920002752 Konjac Polymers 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001588 bifunctional effect Effects 0.000 description 1
- 239000012620 biological material Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- OZECDDHOAMNMQI-UHFFFAOYSA-H cerium(3+);trisulfate Chemical compound [Ce+3].[Ce+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O OZECDDHOAMNMQI-UHFFFAOYSA-H 0.000 description 1
- 229910000333 cerium(III) sulfate Inorganic materials 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 125000004386 diacrylate group Chemical group 0.000 description 1
- -1 dimethyl diallyl ammonium halide Chemical class 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- ZOOODBUHSVUZEM-UHFFFAOYSA-N ethoxymethanedithioic acid Chemical compound CCOC(S)=S ZOOODBUHSVUZEM-UHFFFAOYSA-N 0.000 description 1
- 125000004494 ethyl ester group Chemical group 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000001530 fumaric acid Substances 0.000 description 1
- 235000003642 hunger Nutrition 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 150000002736 metal compounds Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010841 municipal wastewater Substances 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 239000010893 paper waste Substances 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000012966 redox initiator Substances 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- 239000012991 xanthate Substances 0.000 description 1
Landscapes
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Graft Or Block Polymers (AREA)
Abstract
The invention discloses a preparation method of a textile waste cellulose based sewage flocculant. The key points of the method are as follows: the textile waste is subjected to soda boiling for degumming so that high-purity cellulose is obtained; and the high-purity cellulose is thoroughly dissolved, an initiator is added, and graft polymerization between the solution and polyacrylamide is performed to prepare the textile waste cellulose base sewage flocculant. The method is simple, rapid and efficient, and especially suitable for the preparation of the biodegradable textile waste cellulose base sewage flocculant. The preparation method has the characteristics that the textile waste cellulose is introduced into the raw materials for preparing the sewage flocculant, serves as a molecular basic skeleton and partially substitutes for the previous high molecular material, and therefore, the wastes in textile industry are rationally utilized, dependency of the traditional high molecular sewage flocculant on the petroleum resources is reduced and the biodegradability of the traditional flocculant is improved; besides, the preparation method is suitable for the treatment processes of papermaking wastewater, printing and dyeing waste water, municipal sewage and the like, and has important environment benefit and application value.
Description
Technical field
The present invention relates to a kind of preparation method of waste cellulose base sewage flocculant, particularly a kind of preparation method of textile waste cellulose base sewage flocculant, belong to biological material preparing technical field.
Background technology
In sewage disposal and feedwater field, the use of flocculation agent is used widely as the comparatively effective pretreatment process of one.Flocculation agent is mainly divided into inorganic flocculating agent and the large class of organic floculant two, although inorganic flocculating agent usage is simple economical and practical again, its lower flocculating effect and severe corrosive constrain the development of inorganic flocculating agent, and then develop organic floculant.But at present, flocculating agent used in water processing major part is organic synthesis high score subclass flocculation agent, there is the problem of degraded difficulty, also can cause environmental pollution.Meanwhile, Polymer Synthesizing raw material obtains mainly through petroleum fractions cracking.Oil is Nonrenewable resources, if can not find suitable oil replacement thing, synthesis family macromolecule will be difficult to due to starving continue.
Natural macromolecule flocculating agent is cheap, wide material sources, excellent performance, and renewable, biodegradable, has good environmental acceptability, and be called as " green flocculation agent ", application prospect is comparatively wide.Carry out the theory of flocculation research of natural macromolecule flocculating agent, development of new efficient flocculant in a deep going way, optimize the research and development focus that flocculation process control is Flocculants field.
In flocculation agent preparation field, Chinese patent (ZL201210188365.2) " a kind of organic amphiprotic polymeric flocculant and preparation method " is by dimethyl diallyl ammonium halide, vinylformic acid-N, the multipolymer of N dimethylamine base ethyl ester and fumaric acid (salt) three kinds of monomers and bifunctional monomer's diacrylate copolymerization formation, use redox initiator, inorganic peroxide initiator and reagent and additive in polymerization, obtain polymeric flocculant; Chinese patent (ZL200710055247.3) " natural organic high-molecular flocculant and preparation method thereof " take W-Gum as main raw material, and adopting cerous sulfate to make initiator, is that cationic monomer carry out modification system with ammonium chloride and acetic anhydride multipolymer; Chinese patent (ZL201110242033.3) " a kind of preparation method of polymeric flocculant and application " take Rhizoma amorphophalli powder as raw material, use epoxy chloropropane crosslinked-acrylamide graft-xanthation three-step approach obtains finished product konjaku graft type xanthate, be mainly used in sewage treatment area, product first time regeneration desorption efficiency can reach 96%, can reach more than 80% to the clearance of cupric ion; United States Patent (USP) (US8388832) " Process for flocculation of a tailings stream ", by polysilicate, polyacrylamide are generated a kind of novel high polymer flocculation agent in conjunction with polyvalent metal compounds or low molecular weight cationic organic polymer, is suitable for the flocculation processes such as drift sand purification.So far, yet there are no and adopt textile waste cellulosic sections to substitute macromolecular material, occur in order to the related process technologies preparing flocculation agent.
Textile waste cellulose base sewage flocculant, is waste textile industry produced, comes unstuck, extracts comparatively pure Mierocrystalline cellulose through soda boiling, then by the fully dissolving of degumming element, add initiator, is polymerized to be prepared from Polyacrylamide Grafted.Textile waste Mierocrystalline cellulose is introduced in the raw material preparing sewage flocculant, as molecule basic framework, the original macromolecular material of Some substitute, the biodegradable performance of conventional polymer sewage flocculant can be improved, be applicable to the treating processess such as paper waste, dyeing waste water and municipal wastewater, there is important environmental benefit and using value.
Summary of the invention
In order to the source overcoming traditional flocculant relies on petroleum resources, exists and natural degradation, production cost can not cross high practical problems, simultaneously recycling wide material sources and cheap textile industry waste material, preparation high added value, eco-friendly sewage flocculant, the object of this invention is to provide a kind of preparation method of textile waste cellulose base sewage flocculant.
For achieving the above object, technical scheme of the present invention adopts following steps:
1) textile waste is pressed bath raio 1:30, be placed in the sodium hydroxide solution that concentration is 10g/L, 0.5 ~ 1h is boiled under 100 DEG C of conditions, hot wash is to neutral, be placed in the mixing solutions that concentration is the water glass composition of the sodium hydroxide of 15g/L, the sodium polyphosphate of 2g/L and 1g/L again, under 100 DEG C of conditions, boil 0.5 ~ 2h, hot wash is to neutral, dry, obtain coming unstuck Mierocrystalline cellulose completely;
2) step 1) is obtained come unstuck after Mierocrystalline cellulose add in certain density dimethyl sulphoxide solution, abundant infiltration, nitrogen 20min is passed under 165 DEG C of conditions, then 100 DEG C are cooled to, add a certain amount of N-methyl morpholine oxide, continuously stirring 20 ~ 40min under 80 DEG C of conditions, obtains even, transparent cellulose solution;
3) by step 2) cellulose solution that obtains is under mechanical agitation, pass into nitrogen 40min, under 40 ~ 80 DEG C of conditions, add initiator cause 10 ~ 20min, add polyacrylamide and carry out graft polymerization, adding the mass ratio that distilled water controls whole reaction soln and degumming element is 80 ~ 100:1, reaction 60 ~ 120min, obtains uniform milky white solution, i.e. textile waste cellulose base sewage flocculant.
The massfraction of described dimethyl sulphoxide solution is 6 ~ 10wt%, with come unstuck after cellulosic mass ratio be 80 ~ 100:1; The concentration of N-methyl morpholine oxide in system is 6 ~ 10wt%; Initiator is ammonium persulphate, initiator with come unstuck after cellulosic mass ratio be 0.1 ~ 0.5:1; Polyacrylamide with come unstuck after cellulosic mass ratio be 1 ~ 3:1.
Described textile waste is the one in discarded cotton yarn, linters and flax refuse yarn.
Compared with background technology, the beneficial effect that the present invention has is:
The present invention breaks traditions and prepares the pure Polymer Synthesizing pattern of sewage flocculant, textile waste Mierocrystalline cellulose is introduced in the raw material preparing sewage flocculant, as molecule basic framework, the original macromolecular material of Some substitute, the dependence of conventional polymer waste water flocculant for petroleum resources can be reduced, improve the biodegradable performance of traditional flocculant, reduce the production cost of waste water flocculant, there is important environment, Social and economic benef@.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described.
Embodiment 1:
1) cotton yarn will be discarded by bath raio 1:30, be placed in the sodium hydroxide solution that concentration is 10g/L, 0.5h is boiled under 100 DEG C of conditions, hot wash to neutral, then is placed in the mixing solutions that concentration is the water glass composition of the sodium hydroxide of 15g/L, the sodium polyphosphate of 2g/L and 1g/L, under 100 DEG C of conditions, boil 0.5h, hot wash is to neutral, dry, obtain coming unstuck Mierocrystalline cellulose completely, and its alpha-cellulose content is 98.0wt%;
2) step 1) is obtained come unstuck after Mierocrystalline cellulose add in the dimethyl sulphoxide solution of massfraction 10wt%, dimethyl sulphoxide solution with come unstuck after cellulosic mass ratio be 80:1, abundant infiltration, nitrogen 20min is passed under 165 DEG C of conditions, then 100 DEG C are cooled to, add the N-methyl morpholine oxide of massfraction 6wt%, continuously stirring 20min under 80 DEG C of conditions, obtain even, transparent cellulose solution;
3) by step 2) cellulose solution that obtains is under mechanical agitation, pass into nitrogen 40min, under 60 DEG C of conditions, add initiator cause 15min, ammonium persulphate with come unstuck after cellulosic mass ratio be 0.1:1, add polyacrylamide and carry out graft polymerization, polyacrylamide with come unstuck after cellulosic mass ratio be 1:1, add distilled water control whole reaction soln with come unstuck after cellulosic mass ratio be 80:1, reaction 60min, obtain uniform milky white solution, i.e. textile waste cellulose base sewage flocculant (a).
Embodiment 2:
1) linters is pressed bath raio 1:30, be placed in the sodium hydroxide solution that concentration is 10g/L, 0.5h is boiled under 100 DEG C of conditions, hot wash to neutral, then is placed in the mixing solutions that concentration is the water glass composition of the sodium hydroxide of 15g/L, the sodium polyphosphate of 2g/L and 1g/L, under 100 DEG C of conditions, boil 1h, hot wash is to neutral, dry, obtain coming unstuck Mierocrystalline cellulose completely, and its alpha-cellulose content is 97.5wt%;
2) step 1) is obtained come unstuck after Mierocrystalline cellulose add in the dimethyl sulphoxide solution of massfraction 8wt%, dimethyl sulphoxide solution with come unstuck after cellulosic mass ratio be 90:1, abundant infiltration, nitrogen 20min is passed under 165 DEG C of conditions, then 100 DEG C are cooled to, add the N-methyl morpholine oxide of massfraction 8wt%, continuously stirring 30min under 80 DEG C of conditions, obtain even, transparent cellulose solution;
3) by step 2) cellulose solution that obtains is under mechanical agitation, pass into nitrogen 40min, under 80 DEG C of conditions, add initiator cause 15min, ammonium persulphate with come unstuck after cellulosic mass ratio be 0.3:1, add polyacrylamide and carry out graft polymerization, polyacrylamide with come unstuck after cellulosic mass ratio be 3:1, add distilled water control whole reaction soln with come unstuck after cellulosic mass ratio be 90:1, reaction 90min, obtain uniform milky white solution, i.e. textile waste cellulose base sewage flocculant (b).
Embodiment 3:
1) flax refuse yarn is pressed bath raio 1:30, be placed in the sodium hydroxide solution that concentration is 10g/L, 1h is boiled under 100 DEG C of conditions, hot wash to neutral, then is placed in the mixing solutions that concentration is the water glass composition of the sodium hydroxide of 15g/L, the sodium polyphosphate of 2g/L and 1g/L, under 100 DEG C of conditions, boil 2h, hot wash is to neutral, dry, obtain coming unstuck Mierocrystalline cellulose completely, and its alpha-cellulose content is 94.5wt%;
2) step 1) is obtained come unstuck after Mierocrystalline cellulose add in the dimethyl sulphoxide solution of massfraction 6wt%, dimethyl sulphoxide solution with come unstuck after cellulosic mass ratio be 100:1, abundant infiltration, nitrogen 20min is passed under 165 DEG C of conditions, then 100 DEG C are cooled to, add the N-methyl morpholine oxide of massfraction 10wt%, continuously stirring 40min under 80 DEG C of conditions, obtain even, transparent cellulose solution;
3) by step 2) cellulose solution that obtains is under mechanical agitation, pass into nitrogen 40min, under 40 DEG C of conditions, add initiator cause 20min, ammonium persulphate with come unstuck after cellulosic mass ratio be 0.5:1, add polyacrylamide and carry out graft polymerization, polyacrylamide with come unstuck after cellulosic mass ratio be 2:1, add distilled water control whole reaction soln with come unstuck after cellulosic mass ratio be 100:1, reaction 120min, obtain uniform milky white solution, i.e. textile waste cellulose base sewage flocculant (c).
Measure the percentage of grafting of textile waste cellulose base sewage flocculant prepared by embodiment 1,2,3, be applied to the flocculation treatment process of aqueous suspension ofkaolin simultaneously.The percentage of grafting measurement result of three kinds of textile waste cellulose base sewage flocculant that table 1 is prepared for embodiment 1,2,3 and be applied to the treatment effect of aqueous suspension ofkaolin flocculation process.From data in table 1, the textile waste cellulose base sewage flocculant (a) adopting preparation method of the present invention to obtain, (b), (c) percentage of grafting are 36.7 ~ 48.1%, and graft polymerization is more satisfactory.Be applied to the flocculation treatment of aqueous suspension ofkaolin, turbidity of sewage clearance is at 76.6 ~ 86.3%, COD
crclearance, 38.9 ~ 57.2%, illustrates that the textile waste cellulose base sewage flocculant of preparation has good flocculation sediment effect to aqueous suspension ofkaolin.
The product of textile waste cellulose base sewage flocculant prepared by above embodiment is uniformly dispersed in aqueous, solvability is good, does not occur the phenomenons such as self wadding is poly-, be cross-linked, is suitable for being diluted to desired concn, is added in target sewage and carries out flocculation treatment.Textile waste cellulose base sewage flocculant cleanup standard aqueous suspension ofkaolin prepared by embodiment 1, flocculating effect is remarkable, and treatment effect is good, and reaction is fast, and the settling time is short, simple to operate.
Table 1
What more than enumerate is only specific embodiments of the invention.The invention is not restricted to above embodiment, many distortion can also be had.All distortion that those of ordinary skill in the art can directly derive from content disclosed by the invention or associate, all should think protection scope of the present invention.
Claims (1)
1. a preparation method for textile waste cellulose base sewage flocculant, is characterized in that, comprises the following steps:
1) textile waste is pressed bath raio 1:30, be placed in the sodium hydroxide solution that concentration is 10g/L, 0.5 ~ 1h is boiled under 100 DEG C of conditions, hot wash is to neutral, be placed in the mixing solutions that concentration is the water glass composition of the sodium hydroxide of 15g/L, the sodium polyphosphate of 2g/L and 1g/L again, under 100 DEG C of conditions, boil 0.5 ~ 2h, hot wash is to neutral, dry, obtain coming unstuck Mierocrystalline cellulose completely;
2) by step 1) obtain come unstuck after Mierocrystalline cellulose add in certain density dimethyl sulphoxide solution, abundant infiltration, nitrogen 20min is passed under 165 DEG C of conditions, then 100 DEG C are cooled to, add a certain amount of N-methyl morpholine oxide, continuously stirring 20 ~ 40min under 80 DEG C of conditions, obtains even, transparent cellulose solution;
3) by step 2) cellulose solution that obtains is under mechanical agitation, pass into nitrogen 40min, under 40 ~ 80 DEG C of conditions, add initiator cause 10 ~ 20min, add polyacrylamide and carry out graft polymerization, adding the mass ratio that distilled water controls whole reaction soln and degumming element is 80 ~ 100:1, reaction 60 ~ 120min, obtains uniform milky white solution, i.e. textile waste cellulose base sewage flocculant; The massfraction of described dimethyl sulphoxide solution is 6 ~ 10wt%, with come unstuck after cellulosic mass ratio be 80 ~ 100:1; The concentration of N-methyl morpholine oxide in system is 6 ~ 10wt%; Initiator is ammonium persulphate, initiator with come unstuck after cellulosic mass ratio be 0.1 ~ 0.5:1; Polyacrylamide with come unstuck after cellulosic mass ratio be 1 ~ 3:1, described textile waste is the one in discarded cotton yarn, linters and flax refuse yarn.
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| CN103788381B (en) * | 2014-01-21 | 2016-07-13 | 浙江理工大学 | A kind of preparation method of Poise C-80M base flocculant |
| CN105540807B (en) * | 2016-01-28 | 2018-08-31 | 浙江理工大学 | A kind of dendroid cellulose base both sexes flocculating decoloring agent and preparation method thereof |
| CN105692847B (en) * | 2016-01-29 | 2018-04-20 | 浙江赛维环保科技有限公司 | A kind of method that unreacted monomer is recycled during synthetic cellulose base flocculation material |
| CN106589243A (en) * | 2016-11-09 | 2017-04-26 | 浙江理工大学 | Preparation method of bio-base superabsorbent resin composite absorbent core material |
| CN109095580A (en) * | 2018-09-13 | 2018-12-28 | 石狮市中纺学服装及配饰产业研究院 | A kind of regeneration method of waste and old cotton textiles |
| CN110217944A (en) * | 2019-06-12 | 2019-09-10 | 浙江阿祥亚麻纺织有限公司 | A kind of biological oxidation process processing flax production waster water process |
| CN111036168A (en) * | 2019-12-05 | 2020-04-21 | 浙江理工大学 | Method for efficiently removing antimony ions in printing and dyeing wastewater by using modified hydroxyapatite |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1196334A (en) * | 1997-04-11 | 1998-10-21 | 广州市环境保护科学研究所 | Method for preparing cation/amphoteric graft polyacrylamide flocculating agent |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1196334A (en) * | 1997-04-11 | 1998-10-21 | 广州市环境保护科学研究所 | Method for preparing cation/amphoteric graft polyacrylamide flocculating agent |
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