CN103923279A - Composite flocculation decoloration method of colored wastewater - Google Patents
Composite flocculation decoloration method of colored wastewater Download PDFInfo
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- CN103923279A CN103923279A CN201410184236.5A CN201410184236A CN103923279A CN 103923279 A CN103923279 A CN 103923279A CN 201410184236 A CN201410184236 A CN 201410184236A CN 103923279 A CN103923279 A CN 103923279A
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- 239000002351 wastewater Substances 0.000 title claims abstract description 26
- 238000005189 flocculation Methods 0.000 title claims abstract description 18
- 230000016615 flocculation Effects 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims abstract description 13
- 239000002131 composite material Substances 0.000 title abstract description 8
- 239000000975 dye Substances 0.000 claims abstract description 35
- WHGYBXFWUBPSRW-FOUAGVGXSA-N beta-cyclodextrin Chemical compound OC[C@H]([C@H]([C@@H]([C@H]1O)O)O[C@H]2O[C@@H]([C@@H](O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O3)[C@H](O)[C@H]2O)CO)O[C@@H]1O[C@H]1[C@H](O)[C@@H](O)[C@@H]3O[C@@H]1CO WHGYBXFWUBPSRW-FOUAGVGXSA-N 0.000 claims abstract description 21
- 238000004042 decolorization Methods 0.000 claims abstract description 11
- 238000002360 preparation method Methods 0.000 claims abstract description 10
- 125000002091 cationic group Chemical group 0.000 claims abstract description 6
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 36
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 claims description 36
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 28
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 18
- 238000006243 chemical reaction Methods 0.000 claims description 14
- 229910052757 nitrogen Inorganic materials 0.000 claims description 14
- 238000003756 stirring Methods 0.000 claims description 12
- 238000005406 washing Methods 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 11
- 239000003795 chemical substances by application Substances 0.000 claims description 9
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 8
- 150000003839 salts Chemical class 0.000 claims description 8
- BHELZAPQIKSEDF-UHFFFAOYSA-N allyl bromide Chemical compound BrCC=C BHELZAPQIKSEDF-UHFFFAOYSA-N 0.000 claims description 6
- 239000005457 ice water Substances 0.000 claims description 6
- 238000012423 maintenance Methods 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 6
- 238000002390 rotary evaporation Methods 0.000 claims description 6
- 238000001291 vacuum drying Methods 0.000 claims description 6
- 239000003643 water by type Substances 0.000 claims description 6
- -1 acrylyl Chemical group 0.000 claims description 4
- 125000000129 anionic group Chemical group 0.000 claims description 4
- 150000001768 cations Chemical class 0.000 claims description 4
- 238000010907 mechanical stirring Methods 0.000 claims description 4
- 238000006116 polymerization reaction Methods 0.000 claims description 4
- 239000011780 sodium chloride Substances 0.000 claims description 4
- 235000019270 ammonium chloride Nutrition 0.000 claims description 3
- 239000003999 initiator Substances 0.000 claims description 2
- 238000000967 suction filtration Methods 0.000 claims description 2
- 229920000867 polyelectrolyte Polymers 0.000 abstract description 7
- 239000001768 carboxy methyl cellulose Substances 0.000 abstract 4
- 229920002134 Carboxymethyl cellulose Polymers 0.000 abstract 3
- 235000010948 carboxy methyl cellulose Nutrition 0.000 abstract 3
- 239000008112 carboxymethyl-cellulose Substances 0.000 abstract 3
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 abstract 1
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 abstract 1
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 238000013019 agitation Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 239000002244 precipitate Substances 0.000 description 4
- 230000000630 rising effect Effects 0.000 description 4
- 238000003828 vacuum filtration Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- 239000010919 dye waste Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000001988 toxicity Effects 0.000 description 2
- 231100000419 toxicity Toxicity 0.000 description 2
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- 208000024827 Alzheimer disease Diseases 0.000 description 1
- 229920000858 Cyclodextrin Polymers 0.000 description 1
- 239000001116 FEMA 4028 Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 206010039966 Senile dementia Diseases 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 235000011175 beta-cyclodextrine Nutrition 0.000 description 1
- 229960004853 betadex Drugs 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 229920006037 cross link polymer Polymers 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000008394 flocculating agent Substances 0.000 description 1
- 230000003311 flocculating effect Effects 0.000 description 1
- 238000010528 free radical solution polymerization reaction Methods 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 150000004676 glycans Chemical class 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 229920000592 inorganic polymer Polymers 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 229920000768 polyamine Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920001282 polysaccharide Polymers 0.000 description 1
- 239000005017 polysaccharide Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000002594 sorbent Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
Landscapes
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a preparation method of modified cationic polyelectrolyte-poly (AB-beta-CD-co-DAC) based on beta-CD and a composite flocculation decoloration method of poly (AB-beta-CD-co-DAC)/sodium carboxymethylcellulose (CMC) to colored wastewater. The two polyelectrolytes with reverse charges, namely poly (AB-beta-CD-co-DAC)/CMC are natural modified products, can be used for effectively removing dyes in the colored wastewater by virtue of a safe and economical method and can be used for reducing the secondary pollution of a floc or improving the reusability of the floc; in addition, the poly (AB-beta-CD-co-DAC)/CMC are used for compositely treating the colored wastewater, compared with single use of the poly (AB-beta-CD-co-DAC) for treating the colored wastewater, the decolorization rate is obviously accelerated, and a flocculant dosage window is obviously widened.
Description
Technical field
The invention belongs to colorful wastewater process field, be specifically related to a kind of composite flocculation decoloring method of colorful wastewater.
Background technology
At present, flocculence have easy and simple to handle, investment cost is low, equipment takes up an area less, treatment capacity is large, efficiency advantages of higher and be widely used in the decolouring processing of colorful wastewater.Flocculation agent is the core of flocculence, and the quality of its performance has determined the height of flocculating decoloring effect.The existing flocculation agent type of merchandize that can be used for colorful wastewater decolouring little and potential certain danger, comprise inorganic polymer flocculant, as polymeric aluminum, molysite and Syn-Organic flocculants, as cation polypropylene acid amide, polyamine.Although polyaluminium salts has good decolorizing effect, it has certain bio-toxicity in environment, and relevant with the generation of senile dementia; Although and the safe lifeless matter toxicity of polymeric ferric salt, its corrodibility is strong, high to equipment requirements, and Fe
3+can form water soluble contaminants with organism such as soil ulmin in water, make water band look; Cationic polyacrylamide exists the toxicity of monomer acrylamide; Etc..Therefore; adopt novel, efficient and the strong flocculation agent of suitability; process colorful wastewater with more safe and economic method, reduce and produce the secondary pollution of mud or improve its usability again, for colorful wastewater improvement, environment protection, there is profound significance.
That poly-anion/cation flocculation agent based on natural polysaccharide modification has is renewable, biodegradable, economy, environmental protection, the feature such as anti-shearing and enjoy investigator's favor, is the focus of decolouring flocculation agent research field at present.Beta-cyclodextrin (β-CD) product that to be starch obtain through acid or enzymic hydrolysis.β-CD and the most significant feature of derivative thereof are to have in outer hydrophilic, the ring of a ring hydrophobicly, and have the three-dimensional chirality cavity of certain size, can inclusion and hydrophobic molecule or the functional group of its size match, comprise the dyestuff in water.At present, β-CD cross-linked polymer has been widely used in the absorption of dyestuff in water as sorbent material; And β-CD based polyelectrolyte is little in the application in colorful wastewater decolouring as flocculation agent.The molecular weight of natural modified cationic polyelectrolyte-β-CD based polyelectrolyte of preparing by solution polymerization is lower, but its positive charge density and the degree of branching are all higher.Flocculation decoloration experiment shows: though it has very high decreasing ratio to the active anionic dyestuff that waits in water; But the decolorization rate to some dye liquor is slower, need further to be improved.
The present invention adopts the natural modified anionic polyelectrolyte-Xylo-Mucine (CMC) and β-CD based polyelectrolyte Combined Processing dye liquor that molecular weight is higher, molecular chain is linearity.Between two kinds of charged contrary polyelectrolyte, form mixture, can combination dye ion (or molecule) from solution, be precipitated out together, realize to different dye liquors fast, safety, economy, efficient decolorizing effect, and reduce the secondary pollution of flco.
Summary of the invention
The object of this invention is to provide a kind of composite flocculation decoloring method of colorful wastewater.
The invention provides the preparation method of the modified cation polyelectrolyte based on β-CD, feature is that formula rate is counted by weight, comprises the following steps:
(1) 1 part of β-CD is dissolved in 15～20 parts of dimethyl sulfoxide (DMSO) (DMSO), add 0.25～0.45 part of sodium hydroxide, mix after 1 hour, adopt ice-water bath maintenance system temperature between 0～10 DEG C, slowly add 1～2.3 part of allyl bromide 98 (AB), continue reaction 48 hours.Rotary evaporation, except desolventizing, obtains white powder through repeatedly washing with acetone final vacuum is dry, makes polymerisable β-cdderivatives-AB-β-CD.
(2) 45～70 parts of AB-β-CD, 30～55 parts of acrylyl oxy-ethyl-trimethyl salmiacs (DAC) are miscible in 150～400 parts of deionized waters, logical nitrogen, add 0.4～0.7 part of initiator (K
2s
2o
8/ NaHSO
3) and react certain hour, system adds acetone after being cooled to room temperature, and through repeatedly suction filtration, washing with acetone, last vacuum-drying, makes poly (AB-β-CD-co-DAC).
In the preparation method of above-mentioned poly (AB-β-CD-co-DAC), polymerization temperature is 45 DEG C, and polymerization time is 4～6 hours.
The present invention also provides the composite flocculation decolouring application of poly (AB-β-CD-co-DAC)/CMC to colorful wastewater, comprises the following steps:
Prepare certain density dye liquor; The dye liquor that measures certain volume is placed in beaker, adds a certain amount of salt (NaCl), and regulates the pH of dye liquor; First,, add a certain amount of flocculation agent poly (AB-β-CD-co-DAC) and CMC, mechanical stirring; After leaving standstill for some time, measure the percent of decolourization of dye liquor.
In the composite flocculation decolouring application of above-mentioned poly (AB-β-CD-co-DAC)/CMC, described dyestuff comprises active grade for anionic dyestuff, cationic dyestuff and dispersed dye; Dye strength is 100～500mg/L; NaCl concentration is 0～40g/L; Dye liquor pH is 2～12; The consumption of flocculation agent is 10～400mg/L; Mechanical stirring mode is to stir 5～10 minutes for 150～220rpm/ minute, within 50～80rpm/ minute, stirs 10～20 minutes again.
Two kinds of charged contrary polyelectrolyte of advantage of the present invention: poly (AB-β-CD-co-DAC)/CMC are natural modified product, can safe, economic method reach the effective elimination of dyestuff in colorful wastewater, and can reduce the secondary pollution of flco or improve its usability again; In addition, adopt poly (AB-β-CD-co-DAC)/CMC Combined Processing colorful wastewater, when single poly of use (AB-β-CD-co-DAC) or CMC process colorful wastewater, decolorization rate obviously accelerates, and flocculant dosage window obviously broadens.
Percent of decolourization (D, the %) method of calculation of colorful wastewater of the present invention are:
Wherein, C
0, C is respectively the concentration before and after decoloring dye waste water; V
0, V is respectively the volume before and after decoloring dye waste water.Adopt ultraviolet-infrared visible spectrophotometer to measure the absorbancy of waste water from dyestuff.
Embodiment
The present invention divides three steps:
(1) preparation of polymerisable β-cdderivatives-AB-β-CD;
(2) β-CD base cationic polyelectrolyte-poly (AB-β-CD-co-DAC) is prepared in AB-β-CD/ acrylyl oxy-ethyl-trimethyl salmiac (DAC) copolymerization;
(3) poly (AB-β-CD-co-DAC)/Xylo-Mucine (CMC) composite flocculation decolouring colorful wastewater.
Below in conjunction with specific embodiment, the invention will be further described.
Embodiment 1
(1) being equipped with in churned mechanically there-necked flask, add 1 part of β-CD, 15 parts of dimethyl sulfoxide (DMSO) (DMSO), treat that β-CD dissolves completely, add 0.35 part of sodium hydroxide, mix 1 hour; Adopt 0 DEG C of ice-water bath maintenance system temperature, slowly add 1 part of allyl bromide 98 (AB), continue reaction 48 hours.Rotary evaporation is except desolventizing, and the white powder obtaining, through repeatedly washing with acetone final vacuum is dry, makes polymerisable β-cdderivatives-AB-β-CD.
(2) being equipped with in the there-necked flask of magnetic agitation, prolong and nitrogen conduit, add 55 parts of AB-β-CD, 45 parts of DAC and 400 parts of deionized waters, logical nitrogen.Rising temperature to 45 DEG C, treats that AB-β-CD, DAC mix, and adds 0.45 part of K
2s
2o foretells 0.17 part of NaHSO
3.Continue logical nitrogen, insulation reaction 4 hours.Reaction system is cooled to room temperature, adds 800 parts of acetone, and vacuum filtration obtains white precipitate, then through washing with acetone, repetition is placed in 50 DEG C of vacuum drying ovens and is dried 24 hours for several times, obtains target product-poly (AB-β-CD-co-DAC).
(3) (pH is 7 to dyestuff (Reactive Brilliant Blue KN-R) waste water of preparation 100mg/L, not with salt) 50mL, add poly (AB-β-CD-co-DAC) (160mg/L), CMC (5mg/L), after within 165rpm/ minute, stirring 5 minutes, within 65rprn/ minute, stir again 10 minutes, leave standstill 24 hours and measure percent of decolourization.
Embodiment 2
(1) being equipped with in churned mechanically there-necked flask, add 1 part of β-CD, 15 parts of dimethyl sulfoxide (DMSO) (DMSO), treat that β-CD dissolves completely, add 0.35 part of sodium hydroxide, mix 1 hour; Adopt 0 DEG C of ice-water bath maintenance system temperature, slowly add 1 part of allyl bromide 98 (AB), continue reaction 48 hours.Rotary evaporation is except desolventizing, and the white powder obtaining, through repeatedly washing with acetone final vacuum is dry, makes polymerisable β-cdderivatives-AB-β-CD.
(2) being equipped with in the there-necked flask of magnetic agitation, prolong and nitrogen conduit, add 55 parts of AB-β-CD, 45 parts of DAC and 400 parts of deionized waters, logical nitrogen.Rising temperature to 45 DEG C, treats that AB-β-CD, DAC mix, and adds 0.45 part of K
2s
2o
8, 0.17 part of NaHSO
3.Continue logical nitrogen, insulation reaction 4 hours.Reaction system is cooled to room temperature, adds 800 parts of acetone, and vacuum filtration obtains white precipitate, then through washing with acetone, repetition is placed in 50 DEG C of vacuum drying ovens and is dried 24 hours for several times, obtains target product-poly (AB-β-CD-co-DAC).
(3) (pH is 7 to dyestuff (Reactive Brilliant Blue KN-R) waste water of preparation 100mg/L, not with salt) 50mL, add poly (AB-β-CD-co-DAC) (170rng/L), CMC (5.5mg/L), after within 165rpm/ minute, stirring 5 minutes, within 65rpm/ minute, stir again 10 minutes, leave standstill 24 hours and measure percent of decolourization.
Embodiment 3
(1) being equipped with in churned mechanically there-necked flask, add 1 part of β-CD, 15 parts of dimethyl sulfoxide (DMSO) (DMSO), treat that β-CD dissolves completely, add 0.35 part of sodium hydroxide, mix 1 hour; Adopt 0 DEG C of ice-water bath maintenance system temperature, slowly add 1 part of allyl bromide 98 (AB), continue reaction 48 hours.Rotary evaporation is except desolventizing, and the white powder obtaining, through repeatedly washing with acetone final vacuum is dry, makes polymerisable β-cdderivatives-AB-β-CD.
(2) being equipped with in the there-necked flask of magnetic agitation, prolong and nitrogen conduit, add 55 parts of AB-β-CD, 45 parts of DAC and 400 parts of deionized waters, logical nitrogen.Rising temperature to 45 DEG C, treats that AB-β-CD, DAC mix, and adds 0.45 part of K
2s
2o
8, 0.17 part of NaHSO
3.Continue logical nitrogen, insulation reaction 4 hours.Reaction system is cooled to room temperature, adds 800 parts of acetone, and vacuum filtration obtains white precipitate, then through washing with acetone, repetition is placed in 50 DEG C of vacuum drying ovens and is dried 24 hours for several times, obtains target product-poly (AB-β-CD-co-DAC).
(3) (pH is 7 to dyestuff (Reactive Brilliant Blue KN-R) waste water of preparation 100mg/L, not with salt) 50mL, add poly (AB-β-CD-co-DAC) (180mg/L), CMC (6.0mg/L), after within 165rpm/ minute, stirring 5 minutes, within 65rpm/ minute, stir again 10 minutes, leave standstill 24 hours and measure percent of decolourization.
Embodiment 4
(1) being equipped with in churned mechanically there-necked flask, add 1 part of β-CD, 15 parts of dimethyl sulfoxide (DMSO) (DMSO), treat that β-CD dissolves completely, add 0.35 part of sodium hydroxide, mix 1 hour; Adopt 0 DEG C of ice-water bath maintenance system temperature, slowly add 1 part of allyl bromide 98 (AB), continue reaction 48 hours.Rotary evaporation is except desolventizing, and the white powder obtaining, through repeatedly washing with acetone final vacuum is dry, makes polymerisable β-cdderivatives-AB-β-CD.
(2) being equipped with in the there-necked flask of magnetic agitation, prolong and nitrogen conduit, add 60 parts of AB-β-CD, 40 parts of DAC and 400 parts of deionized waters, logical nitrogen.Rising temperature to 45 DEG C, treats that AB-β-CD, DAC mix, and adds 0.45 part of K
2s
2o
8, 0.17 part of NaHSO
3.Continue logical nitrogen, insulation reaction 4 hours.Reaction system is cooled to room temperature, adds 800 parts of acetone, and vacuum filtration obtains white precipitate, then through washing with acetone, repetition is placed in 50 DEG C of vacuum drying ovens and is dried 24 hours for several times, obtains target product-poly (AB-β-CD-co-DAC).
(3) (pH is 7 to dyestuff (Reactive Brilliant Blue KN-R) waste water of preparation 100rng/L, not with salt) 50mL, add poly (AB-β-CD-co-DAC) (190mg/L), CMC (6.5mg/L), after within 165rpm/ minute, stirring 5 minutes, within 65rpm/ minute, stir again 10 minutes, leave standstill 24 hours and measure percent of decolourization.
The dye liquor percent of decolourization that above embodiment can reach is as shown in table 1:
Table 1
Claims (5)
1. a preparation method of the modified cation polyelectrolyte-poly (β-CD-MAH-DAC-St) based on β-CD, is characterized in that concrete steps (formula rate is counted by weight) are:
(1) 1 part of β-CD is dissolved in 15～20 parts of dimethyl sulfoxide (DMSO) (DMSO), add 0.25～0.45 part of sodium hydroxide, mix after 1 hour, adopt ice-water bath maintenance system temperature between 0～10 DEG C, slowly add 1～2.3 part of allyl bromide 98 (AB), continue reaction 48 hours.Rotary evaporation, except desolventizing, obtains white powder through repeatedly washing with acetone final vacuum is dry, makes polymerisable β-cdderivatives-AB-β-CD.
(2) 45～70 parts of AB-β-CD, 30～55 parts of acrylyl oxy-ethyl-trimethyl salmiacs (DAC) are miscible in 150～400 parts of deionized waters, logical nitrogen, add 0.4～0.7 part of initiator (K
2s
2o
8/ NaHSO
3) and react certain hour, system adds acetone after being cooled to room temperature, and through repeatedly suction filtration, washing with acetone, last vacuum-drying, makes poly (AB-β-CD-co-DAC).
2. preparation method according to claim 1, is characterized in that: polymerization temperature is 45 DEG C, and polymerization time is 4～6 hours.
3. β-CD based polyelectrolyte-the poly (AB-β-CD-co-DAC) preparing according to method described in claim 1-2.
4. poly according to claim 3 (AB-β-CD-co-DAC) and Xylo-Mucine (CMC) are compounded in the application of colorful wastewater decolouring aspect.It is characterized in that concrete steps are:
(1) prepare certain density dye liquor.
(2) dye liquor that measures certain volume is placed in beaker, adds a certain amount of salt (NaCl), and regulates the pH of dye liquor.
(3) first,, add a certain amount of poly (AB-β-CD-co-DAC) and CMC, mechanical stirring.
(4), after leaving standstill for some time, measure the percent of decolourization of dye liquor.
5. decolouring application according to claim 4, is characterized in that: described dyestuff comprises active grade for anionic dyestuff, cationic dyestuff and dispersed dye; Dye strength is 100～500mg/L; NaCl concentration is 0～40g/L; Dye liquor pH is 2～12; The consumption of flocculation agent is 10～400mg/L; Mechanical stirring mode is that 150～220rpm/min stirs 5～10min, and 50～80rpm/min stirs 10～20min again.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109734840A (en) * | 2019-01-08 | 2019-05-10 | 重庆大学 | A kind of preparation method of the natural grafting flocculant based on β-CD |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101397351A (en) * | 2007-09-30 | 2009-04-01 | 中国科学院理化技术研究所 | Hydrophobic modified cationic polyacrylamide, preparation method and use thereof |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101397351A (en) * | 2007-09-30 | 2009-04-01 | 中国科学院理化技术研究所 | Hydrophobic modified cationic polyacrylamide, preparation method and use thereof |
Non-Patent Citations (2)
| Title |
|---|
| 任二辉等: "疏水化β-CD基阳离子聚电解质的合成及脱色性能", 《功能高分子学报》 * |
| 季文等: "6-O-烯丙基-β环糊精的合成与结构表征", 《中国胶粘剂》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109734840A (en) * | 2019-01-08 | 2019-05-10 | 重庆大学 | A kind of preparation method of the natural grafting flocculant based on β-CD |
| CN109734840B (en) * | 2019-01-08 | 2021-07-13 | 重庆大学 | Preparation method of natural graft flocculant based on beta-CD |
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| CN103923279B (en) | 2017-02-01 |
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