CN105170120A - Method for preparing functional loess-based adsorbent through surface graft polymerization - Google Patents
Method for preparing functional loess-based adsorbent through surface graft polymerization Download PDFInfo
- Publication number
- CN105170120A CN105170120A CN201510640080.1A CN201510640080A CN105170120A CN 105170120 A CN105170120 A CN 105170120A CN 201510640080 A CN201510640080 A CN 201510640080A CN 105170120 A CN105170120 A CN 105170120A
- Authority
- CN
- China
- Prior art keywords
- loess
- prepared
- base adsorbent
- functionalization
- distilled water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The invention discloses a method for preparing a functional loess-based adsorbent through surface graft polymerization. Loess subjected to surface acidizing treatment and organic modification by a silane coupling agent, functional monomers including acrylamide and sodium p-styrene sulfonate as well as a crosslinking agent are dispersed in distilled water, under the protection of inert gas and the action of an initiator, the functional monomers are subjected to graft copolymerization on the surface of the loess subjected to organic modification, and the adsorbent is prepared. Experiments indicate that the prepared functional loess-based adsorbent has the better adsorption property for dye methylene blue and basic fuchsin in wastewater, raw materials are easy to obtain, and the cost is low, so that the adsorbent has potential application prospect in treatment of dye wastewater.
Description
Technical field
The present invention relates to a kind of preparation method of loess base adsorbent, particularly relate to a kind of loess of surface modification and functional monomer and carry out at loess particle surface the method that glycerol polymerization prepares functionalization loess base adsorbent; The present invention also relates to this loess base adsorbent processing containing the application in methylene blue (MB) and basic fuchsin (BF) waste water from dyestuff simultaneously, belongs to macromolecular material and water-treatment technology field.
Background technology
In recent years, because Application and Development new material, new auxiliary make that the component of dyeing waste water becomes increasingly complex, COD and BOD concentration is high, biodegradability reduces, thus dyeing waste water be treated as the problem paid close attention to the most in wastewater treatment industry.Methylene blue (MB) is one of dyestuff commonly used in industrial production, has harm to water plant, people, animal.The MB of high dose can reduce red blood cell life span, causes the symptom of methemoglobinemia and the change of other red cell morphologies.Basic fuchsin (BF) is a kind of triphenylmethane dye, has anesthesia and bactericidal property.Physical contact BF can cause serious eye disease and skin irritatin, and human body can cause gastrointestinal irritation after taking in, and causes nausea, vomits, the series of symptoms such as diarrhoea, and has major injury to organs such as blood vessel, liver, spleens.Therefore, effectively process before discharging waste water from dyestuff, realizing qualified discharge has become difficult point in water prevention and cure of pollution process.
At present, existing a lot of method is widely used in the wastewater treatment of printing and dyeing industry, such as: electrolysis, flocculent precipitation, photocatalytic oxidation, bioanalysis, absorption method.Wherein absorption method has the advantages such as recycling potential because of low, simple to operation, the nontoxic and sorbing material of cost, becomes the purification method for effluent with application potential.And natural material adsorbent is due to its low cost and degradability, become the focus of dispose of sewage industry research and application.
Loess is the green natural inorganic macromolecule material of a kind of wide material sources, cheap and easy to get, nontoxic, non-secondary pollution, and it is loose, the architectural feature of porous, makes it have certain absorption property.But the adsorption effect of natural loess is poor, need in actual applications to carry out modification to it.At present acidification is mainly contained to the modification of loess, and carry out the organic-treating on surface by silane coupler, and have no report for introducing the functional modification of active function groups to loess surface.
Summary of the invention
The present invention seeks to some problems for existing in prior art, providing a kind of and introduce active function groups by surface grafting polymerization technology on loess surface and prepare the method for functionalization loess base adsorbent.
Another object of the present invention is to provide this application of loess base adsorbent in dye wastewater treatment.
One, the preparation of functionalization loess based polyalcohol
The preparation of the functional loess base adsorbent of the present invention; be by organically-modified loess, functional monomer and crosslinking agent are dispersed in distilled water, in inert gas shielding; under initator effect, functional monomer is made to carry out glycerol polymerization on organically-modified loess surface and obtain.Its concrete technology is as follows:
1, the organic modification of loess: loess is joined in the hydrochloric acid solution (mass ratio of loess and hydrochloric acid solution is 1:0.1 ~ 1:0.5) of 2 ~ 11mol/L, be warming up to 40 ~ 90 DEG C, stir-activating 0.5 ~ 4h, filter, be washed till neutrality with distilled water, obtain the loess of surperficial acidifying; Again the loess of surperficial acidifying is distributed in the mixed liquor (mass ratio of distilled water and absolute ethyl alcohol is 1:0.25 ~ 1:1) of distilled water and absolute ethyl alcohol, with pH to 3.0 ~ 4.0 of acetic acid regulation system, add silane coupler and (select KH570, KH171, its addition is 5% ~ 50% of acidifying loess quality), with pH to 9.0 ~ 10.0 of ammoniacal liquor regulation system after being uniformly dispersed; Be warmed up to 50 ~ 90 DEG C, stirring reaction 1 ~ 8h; Product after filtration, washing, dry, obtain the loess of surface organic modification.
2, the preparation of functionalization loess base adsorbent: be dispersed in distilled water by the loess of surface organic modification, add functional monomer, dispersed with stirring is even; Add crosslinking agent to be again uniformly dispersed, logical inert gas, be heated to 30 ~ 50 DEG C, then add initator, continue to be warming up to 50 ~ 90 DEG C, stirring reaction 20 ~ 150min, obtains crude product; Crude product, through washing, drying, obtains functional loess based polyalcohol.
Described functional monomer selects acrylamide and SSS (ratio of the two can be chosen arbitrarily as requested); Functional monomer addition is 5% ~ 50% of organically-modified loess quality; Crosslinking agent adopts
n,N'-methylene-bisacrylamide, diacrylate propylene glycol ester or glycerol dimethacrylate, crosslinking agent addition is 1 ~ 20% of organically-modified loess quality; Initator adopts potassium peroxydisulfate or ammonium persulfate, and initator addition is 0.5 ~ 20% of surface organic modification loess quality.
two,the structure of loess base adsorbent, morphology characterization
Below by ESEM (SEM), infared spectrum (FT-IR
),thermogravimetric (TG) to be analyzed etc. and is characterized the structure of functionalization loess base adsorbent of the present invention, pattern.
1, sem analysis
The SEM that Fig. 1,2 is respectively loess base adsorbent prepared by loess and the present invention schemes (amplifying 10000 times).As shown in Figure 1, the surface irregularity of loess, corner angle are clearly demarcated, and very coarse, have hole, there is much tiny crackle on surface, illustrates that loess has certain adsorption capacity.Marked change is there occurs by the surface topography of the modified functional loess based polyalcohol of silane coupler, acrylamide, SSS, loess surface becomes smoother, define one layer of polymeric film loess is wrapped up, face crack disappears, and has the lamellar structure (Fig. 2) of smoother.SSS is described, acrylamide graft arrived loess surface.
2, FT-IR analyzes
Fig. 3 is the FT-IR collection of illustrative plates of loess base adsorbent prepared by the present invention.1093cm
-1near be the stretching vibration absworption peak of Si-O-Si, 538cm
-1, 470cm
-1near be the flexural vibrations absworption peak of Si-O-Si, 3645cm
-1, 3452cm
-1for the stretching vibration peak of hydroxyl in Free water, 1631cm
-1near be the flexural vibrations peak of hydrone-OH, 797cm
-1place is the characteristic absorption peak of quartz, and peak is comparatively strong, illustrates that unformed silica is more.2951cm
-1place is KH-570(
γ-methacryloxy trimethoxy silane) characteristic absorption peak of methylene, at 1170cm
-1place is the asymmetric stretching vibration peak of S=O in sulfonic group, 1450cm
-1place is the skeletal vibration peak of phenyl ring, 3400cm
-1near be the asymmetric stretching vibration peak of N-H key, 1660cm
-1place is the stretching vibration absworption peak of C=O in acid amides, 1350cm
-1place is the stretching vibration characteristic peak of C-N key.Show the success of SSS, acrylamide and loess grafting compound.
3, TG analyzes
Fig. 4 is the thermal analysis curue of loess base adsorbent prepared by the present invention.As can be seen from Figure 4, the weightlessness that the weightlessness before 336 DEG C is unpolymerized acrylamide, SSS and intermediary water is amassed in the absorption of loess base, be about 3.4%, in the decomposition that the weightlessness of 336 DEG C ~ 763 DEG C are polymer chain break and organic matter, be about 9.4%, 87% of final residue is the loess in compound.The success of SSS, acrylamide and loess grafting compound is described.
Three, the absorption property of loess base adsorbent
1, to the absorption of MB: the MB simulated wastewater getting 50mL100mg/L, add loess base adsorbent 0.05g prepared by the present invention, constant temperature oscillation 30min, leave standstill, filter, filtrate measures the concentration of remaining MB with ultraviolet-visible spectrophotometry.Result shows, functional loess based polyalcohol is to the percent of decolourization of MB up to 97.5%, and adsorption capacity can reach 97.5mg/g.
2, to the absorption of BF: the BF simulated wastewater getting 50mL100mg/L, add loess base adsorbent 0.07g prepared by the present invention, constant temperature oscillation 40min, leave standstill, filter, filtrate measures the concentration of remaining BF with ultraviolet-visible spectrophotometry.Result shows, loess base adsorbent is to the percent of decolourization of BF up to 98.5%, and adsorption capacity can reach 70.3mg/g.
In sum, the present invention take loess as matrix, first introduce double bond with silane coupler on loess surface, glycerol polymerization is carried out at loess particle surface again with functional monomer acrylamide (AM) and SSS (SSS), the loess base adsorbent of preparation has good absorption property to MB and BF in waste water from dyestuff, thus in the process of waste water from dyestuff, has potential application prospect.
Accompanying drawing explanation
Fig. 1 is the scanning electron microscope (SEM) photograph (SEM) of natural loess.
The scanning electron microscope (SEM) photograph (SEM) of loess base adsorbent prepared by Fig. 2 the present invention.
Fig. 3 is the infrared absorpting light spectra (FT-IR) of loess base adsorbent prepared by the present invention.
Fig. 4 is the thermogravimetric curve (TG) of loess base adsorbent prepared by the present invention.
Detailed description of the invention
Below by specific embodiment to the preparation of loess base adsorbent of the present invention and be described further the absorption property of MB and BF.
Embodiment one
1, the synthesis of loess base adsorbent
(1) surface modification of loess: get 5g loess, joins in the HCl solution of 100mL3mol/L, is warming up to 60 DEG C, stir-activating 1h; Filter, be washed till neutrality with distilled water, obtain surperficial acidifying loess.In the three-neck flask of 100mL, add 10g acidifying loess, 20mL distilled water, 30mL absolute ethyl alcohol, dispersed with stirring is even; With pH to 3 ~ 4 of glacial acetic acid regulation system, then add 3gKH-570, stirred at ambient temperature disperses; Be 9 ~ 10 with the pH of ammoniacal liquor regulation system, be then warmed up to 80 DEG C, stirring reaction 5h; Product filtration, washing, drying, obtain surface modification loess (KH-HLC).
(2) synthesis of loess base adsorbent
In the three-neck flask of 100mL, be dispersed in 30mL distilled water by 10g surface modification loess, then add 1.0g SSS, 1.0g acrylamide, stirred at ambient temperature is uniformly dispersed; Then 0.1g is added
n,N'-methylene-bisacrylamide (MBA), continues dispersed with stirring even; Logical nitrogen, be heated to 45 DEG C, add 0.15g initiator potassium persulfate (KPS), continue to be warming up to 70 DEG C, stirring reaction 30min, obtains crude product; Crude product, through washing, drying, obtains loess base adsorbent.
2, absorption property test
Reach 95.6% to the percent of decolourization of MB in simulated wastewater, adsorption capacity is 95.6mg/g; Reach 97.6% to the percent of decolourization of BF in simulated wastewater, adsorption capacity is 68.6mg/g.
Embodiment two
1, the synthesis of loess base adsorbent
(1) surface modification of loess: get 8g loess, joins in the HCl solution of 100mL4mol/L, is warming up to 70 DEG C, stir-activating 1.5h; Filter, be washed till neutrality with distilled water, obtain surperficial acidifying loess.In the three-neck flask of 100mL, add 10g acidifying loess, 20mL distilled water, 30mL absolute ethyl alcohol, dispersed with stirring is even; With pH to 3 ~ 4 of glacial acetic acid regulation system, add 2gKH-570, continue dispersed with stirring.Be 9 ~ 10 with the pH of ammoniacal liquor regulation system again, be warmed up to 80 DEG C, stirring reaction 4h; Product after filtration, washing, dry, obtain surface modification loess (KH-HLC).
(2) synthesis of loess base adsorbent: in the three-neck flask of 100mL, is dispersed in 10g surface modification loess in 30mL distilled water, and add 2g acrylamide (AM), 1.0g SSS, stirred at ambient temperature is uniformly dispersed; Add 0.15g again
n,N'-methylene-bisacrylamide (MBA), continues dispersed with stirring even; Logical nitrogen, after being heated to 45 DEG C, add 0.15g initiator potassium persulfate (KPS), continue to be warming up to 70 DEG C, stirring reaction 60min, obtains crude product; Crude product, through washing, drying, obtains loess base adsorbent.
2, absorption property test
Reach 96.5% to the percent of decolourization of MB in simulated wastewater, adsorption capacity is 96.5mg/g.Reach 97.8% to the percent of decolourization of BF in simulated wastewater, adsorption capacity is 69.8mg/g.
Embodiment three
1, the synthesis of loess base adsorbent
(1) surface modification of loess: get 10g loess, joins in the HCl solution of 100mL4mol/L, is warming up to 70 DEG C, stir-activating 2h; Filter, be washed till neutrality with distilled water, obtain surperficial acidifying loess.In the three-neck flask of 100mL, add 8g acidifying loess, 20mL distilled water, 30mL absolute ethyl alcohol, dispersed with stirring is even; With pH to 3 ~ 4 of glacial acetic acid regulation system, add 4gKH-171, continue dispersed with stirring; Be 9 ~ 10 with the pH of ammoniacal liquor regulation system again; Then 60 DEG C are warmed up to, stirring reaction 4h; Reaction; Product after filtration, washing, dry, obtain surface modification loess.
(2) synthesis of functional loess based polyalcohol: in the three-neck flask of 100mL, be dispersed in 30mL distilled water by 15g surface modification loess, add 3.0g SSS, 1g acrylamide, stirred at ambient temperature is uniformly dispersed; Add 0.2g again
n,N'-methylene-bisacrylamide (MBA), continues dispersed with stirring even; Logical nitrogen, be heated to 45 DEG C, add 0.2g initiator potassium persulfate (KPS), continue to be warming up to 80 DEG C, stirring reaction 80min, obtains crude product; Crude product, through washing, drying, obtains loess base adsorbent.
2, absorption property test
Reach 97.3% to the percent of decolourization of MB in simulated wastewater, adsorption capacity is 97.3mg/g.Reach 98.3% to the percent of decolourization of BF in simulated wastewater, adsorption capacity is 70.1mg/g.
Embodiment four
1, the synthesis of loess base adsorbent
(1) surface modification of loess: get 12g loess, joins in the HCl solution of 100mL6mol/L, is warming up to 80 DEG C, stir-activating 4h; Filter, be washed till neutrality with distilled water, obtain surperficial acidifying loess.In the three-neck flask of 100mL, add 5g acidifying loess, 20mL distilled water, 30mL absolute ethyl alcohol, dispersed with stirring is even; With pH to 3 ~ 4 of glacial acetic acid regulation system, then add 1.5gKH-171, continue; Dispersed with stirring; Be 9 ~ 10 with the pH of ammoniacal liquor regulation system; Then 80 DEG C are warmed up to, stirring reaction 4h; Product after filtration, washing, dry, obtain surface modification loess.
(2) synthesis of loess base adsorbent: in the three-neck flask of 100mL, be dispersed in 30mL distilled water by 15g surface modification loess, add 1.0g SSS, 3g acrylamide, stirring at room temperature is uniformly dispersed; Add 0.2g again
n,N'-methylene-bisacrylamide (MBA), continues dispersed with stirring even; Logical nitrogen, be heated to 45 DEG C, add 0.2g initiator potassium persulfate (KPS), continue to be warming up to 80 DEG C, stirring reaction 80min, obtains crude product; Crude product, through washing, drying, obtains loess base adsorbent.
2, absorption property test
Reach 97.6% to the percent of decolourization of MB in simulated wastewater, adsorption capacity is 97.6mg/g; Reach 98.7% to the percent of decolourization of BF in simulated wastewater, adsorption capacity is 70.6mg/g.
Claims (9)
1. prepared the method for functionalization loess base adsorbent by surface grafting polymerization for one kind; by the loess of surface organic modification; functional monomer and crosslinking agent are dispersed in distilled water; in inert gas shielding; under initator effect, functional monomer is made to carry out glycerol polymerization on organically-modified loess surface and obtain.
2. prepared the method for functionalization loess base adsorbent as claimed in claim 1 by surface grafting polymerization, it is characterized in that: described functional monomer is acrylamide and SSS.
3. prepared the method for functionalization loess base adsorbent as claimed in claim 2 by surface grafting polymerization, it is characterized in that: be dispersed in distilled water by organically-modified loess, it is even to add functional monomer dispersed with stirring; Add crosslinking agent to be again uniformly dispersed, inert gas shielding, be heated to 30 ~ 50 DEG C, then add initator, continue to be warming up to 50 ~ 90 DEG C, stirring reaction 20 ~ 150min, obtains crude product; Crude product, through washing, drying, obtains functional loess based polyalcohol.
4. as described in Claims 2 or 3, prepared the method for functionalization loess base adsorbent by surface grafting polymerization, it is characterized in that: functional monomer addition is 5% ~ 50% of organically-modified loess quality.
5. as described in Claims 2 or 3, prepared the method for functionalization loess base adsorbent by surface grafting polymerization, it is characterized in that: described crosslinking agent is
n,N'-methylene-bisacrylamide, diacrylate propylene glycol ester or glycerol dimethacrylate; Crosslinking agent addition is 1 ~ 20% of organically-modified loess quality.
6. as described in Claims 2 or 3, prepared the method for functionalization loess base adsorbent by surface grafting polymerization, it is characterized in that: described initator is potassium peroxydisulfate, ammonium persulfate; Initator addition is 0.5 ~ 20% of surface organic modification loess quality.
7. as described in Claims 2 or 3, the method for functionalization loess base adsorbent is prepared by surface grafting polymerization, it is characterized in that: the organic modification of described loess: be that loess is joined in the hydrochloric acid solution of 2 ~ 11mol/L, be warming up to 40 ~ 90 DEG C, stir-activating 0.5 ~ 4h, filter, be washed till neutrality with distilled water, obtain the loess of surperficial acidifying; Again the loess of surperficial acidifying is distributed in the mixed liquor of distilled water and absolute ethyl alcohol, with pH to 3.0 ~ 4.0 of acetic acid regulation system, adds silane coupler and be uniformly dispersed; With pH to 9.0 ~ 10.0 of ammoniacal liquor regulation system; Be warmed up to 50 ~ 90 DEG C, stirring reaction 1 ~ 8h; Product after filtration, washing, dry, obtain the loess of surface organic modification.
8. prepared the method for functionalization loess base adsorbent as claimed in claim 7 by surface grafting polymerization, it is characterized in that: the mass ratio of loess and hydrochloric acid solution is 1:0.1 ~ 1:0.5; In the mixed liquor of distilled water and absolute ethyl alcohol, the mass ratio of distilled water and absolute ethyl alcohol is 1:0.25 ~ 1:1.
9. prepared the method for functionalization loess base adsorbent as claimed in claim 7 by surface grafting polymerization, it is characterized in that: described silane coupler selects KH570, KH171; Silane coupler addition is 5% ~ 50% of acidifying loess quality.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510640080.1A CN105170120A (en) | 2015-09-30 | 2015-09-30 | Method for preparing functional loess-based adsorbent through surface graft polymerization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510640080.1A CN105170120A (en) | 2015-09-30 | 2015-09-30 | Method for preparing functional loess-based adsorbent through surface graft polymerization |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105170120A true CN105170120A (en) | 2015-12-23 |
Family
ID=54892832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510640080.1A Pending CN105170120A (en) | 2015-09-30 | 2015-09-30 | Method for preparing functional loess-based adsorbent through surface graft polymerization |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105170120A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106117471A (en) * | 2016-07-01 | 2016-11-16 | 西北师范大学 | A kind of preparation of the loess grafted propylene acid copolymer adsorbent for Adsorption of Heavy Metal Ions |
| CN106902731A (en) * | 2017-03-18 | 2017-06-30 | 西北师范大学 | A kind of loess loaded titanium dioxide photocatalyst and preparation method thereof |
| CN106905496A (en) * | 2017-03-18 | 2017-06-30 | 西北师范大学 | A kind of loess particle graft copolymer adsorbent and preparation method thereof |
| CN111389378A (en) * | 2020-03-27 | 2020-07-10 | 重庆大学 | Amphoteric self-floating adsorbent, preparation method and application |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102580694A (en) * | 2012-01-13 | 2012-07-18 | 西北师范大学 | Method for preparing modified loess with high adsorption performance |
| CN103071461A (en) * | 2013-02-26 | 2013-05-01 | 西北师范大学 | Preparation of xanthated loess adsorbent and application of xanthated loess adsorbent to waste water treatment |
| CN103203217A (en) * | 2012-12-20 | 2013-07-17 | 余姚市浙工大技术转移中心 | Interlayer silane modified bentonite and application thereof |
| CN104211856A (en) * | 2014-07-18 | 2014-12-17 | 西北师范大学 | Preparation method of loess-based polyacrylamide adsorbent |
-
2015
- 2015-09-30 CN CN201510640080.1A patent/CN105170120A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102580694A (en) * | 2012-01-13 | 2012-07-18 | 西北师范大学 | Method for preparing modified loess with high adsorption performance |
| CN103203217A (en) * | 2012-12-20 | 2013-07-17 | 余姚市浙工大技术转移中心 | Interlayer silane modified bentonite and application thereof |
| CN103071461A (en) * | 2013-02-26 | 2013-05-01 | 西北师范大学 | Preparation of xanthated loess adsorbent and application of xanthated loess adsorbent to waste water treatment |
| CN104211856A (en) * | 2014-07-18 | 2014-12-17 | 西北师范大学 | Preparation method of loess-based polyacrylamide adsorbent |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106117471A (en) * | 2016-07-01 | 2016-11-16 | 西北师范大学 | A kind of preparation of the loess grafted propylene acid copolymer adsorbent for Adsorption of Heavy Metal Ions |
| CN106902731A (en) * | 2017-03-18 | 2017-06-30 | 西北师范大学 | A kind of loess loaded titanium dioxide photocatalyst and preparation method thereof |
| CN106905496A (en) * | 2017-03-18 | 2017-06-30 | 西北师范大学 | A kind of loess particle graft copolymer adsorbent and preparation method thereof |
| CN111389378A (en) * | 2020-03-27 | 2020-07-10 | 重庆大学 | Amphoteric self-floating adsorbent, preparation method and application |
| CN111389378B (en) * | 2020-03-27 | 2023-06-27 | 重庆大学 | Amphoteric self-floating adsorbent, preparation method and application |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Zheng et al. | Synthesis of anion polyacrylamide under UV initiation and its application in removing dioctyl phthalate from water through flocculation process | |
| Zheng et al. | UV-initiated polymerization of hydrophobically associating cationic flocculants: Synthesis, characterization, and dewatering properties | |
| Lu et al. | UV-initiated synthesis of a novel chitosan-based flocculant with high flocculation efficiency for algal removal | |
| Cai et al. | Effect of hydrolysis degree of hydrolyzed polyacrylamide grafted carboxymethyl cellulose on dye removal efficiency | |
| CN105170120A (en) | Method for preparing functional loess-based adsorbent through surface graft polymerization | |
| Li et al. | UV-initiated polymerization of acid-and alkali-resistant cationic flocculant P (AM-MAPTAC): synthesis, characterization, and application in sludge dewatering | |
| CN105903442A (en) | Preparation of polysaccharide-base hydrogel and application of polysaccharide-base hydrogel as adsorbent to waste water treatment | |
| CN105175636B (en) | A kind of method of nano modification polyacrylamide flocculant | |
| CN113461129B (en) | Visible light polymerization-based g-C3N4Preparation method of persulfate double-initiation flocculant | |
| WO2010074358A1 (en) | Chitosan-nipam thermosensitive polymer coagulant and method for the preparation therefor | |
| CN103623787B (en) | The preparation of acrylic acid/polyvinylpyrrolidone/Paligorskite composite adsorbing material | |
| CN107814890A (en) | A kind of preparation method of hydrophobic association type PAMC | |
| CN103623797A (en) | Preparation method of natural polyelectrolyte gel adsorbent for wastewater treatment | |
| CN104437433A (en) | Preparation method of methacryloxyethyltrimethyl ammonium chloride based anionic dye absorbent | |
| Liu et al. | Synthesis of a cationic polyacrylamide by a photocatalytic surface-initiated method and evaluation of its flocculation and dewatering performance: Nano-TiO 2 as a photo initiator | |
| CN108083614B (en) | Water-dispersible diatomite composite flocculation dehydrating agent and application thereof | |
| JP2008259923A (en) | Cation-type polymer flocculant and sludge treatment method using the same | |
| CN105131308B (en) | The method that a kind of laccase/tert-butyl hydroperoxide catalysis prepares wooden hydrogel | |
| CN110964148A (en) | Fluorine-containing hydrophobic associated cationic polyacrylamide flocculant and preparation method thereof | |
| CN106117471A (en) | A kind of preparation of the loess grafted propylene acid copolymer adsorbent for Adsorption of Heavy Metal Ions | |
| CN105622848B (en) | Preparation method and application of plasma-initiated synthetic turbidity removal agent | |
| CN105251465A (en) | Preparation method of loess and itaconic acid copolymer adsorbent | |
| ATE542850T1 (en) | NANOCOMPOSITES AND PRODUCTION PROCESSES THEREOF | |
| CN106927548B (en) | Composite decoloring coagulant, preparation method and decoloring method thereof | |
| JPWO2008047739A1 (en) | Sewage sludge dewatering method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151223 |