CN105498730A - Preparation method for magnetic polyacrylamide-cationic starch-based adsorbing material - Google Patents
Preparation method for magnetic polyacrylamide-cationic starch-based adsorbing material Download PDFInfo
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- CN105498730A CN105498730A CN201610062810.9A CN201610062810A CN105498730A CN 105498730 A CN105498730 A CN 105498730A CN 201610062810 A CN201610062810 A CN 201610062810A CN 105498730 A CN105498730 A CN 105498730A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/06—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04
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- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/24—Naturally occurring macromolecular compounds, e.g. humic acids or their derivatives
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/26—Synthetic macromolecular compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/288—Treatment of water, waste water, or sewage by sorption using composite sorbents, e.g. coated, impregnated, multi-layered
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- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/48—Sorbents characterised by the starting material used for their preparation
- B01J2220/4812—Sorbents characterised by the starting material used for their preparation the starting material being of organic character
- B01J2220/4825—Polysaccharides or cellulose materials, e.g. starch, chitin, sawdust, wood, straw, cotton
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
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Abstract
The invention discloses a preparation method for a magnetic polyacrylamide-cationic starch-based adsorbing material, and belongs to the field of adsorbing materials. The prepared cationic starch is excellent in biocompatibility, hydrophilicity and biodegradability, and rich in hydroxyl groups on a molecular chain, so that complexation, ion exchange or electrostatic attraction on heavy metal ions can be realized; the polyacrylamide molecular chain has lots of amino groups, and the reactive groups, namely the amino groups, have a strong complexing ability to metal ions, so that multi-amino modification on cationic starch can be carried out by use of polyacrylamide; meanwhile, coating of inorganic magnetic ferroferric oxide can be realized, so that the composite adsorbing material, namely the magnetic polyacrylamide-cationic starch-based adsorbing material, can be obtained. The magnetic polyacrylamide-cationic starch-based adsorbing material can be applied to wastewater treatment, and is excellent in heavy metal adsorption effect, easy to separate and recycle, simple in preparation process and low in cost.
Description
Technical field
The invention discloses the preparation method of a kind of magnetic polyacrylamide-cationic starch adsorbing material, belong to sorbing material field.
Background technology
Its affluent resources of starch, low price, unique structure and reactivity make it can have more, better performance by structural modification, replace some high polymers being difficult to degrade synthesized by oil product.Designing in decades and synthesizing various starch derivatives is a very active research field, and a lot of functional functional group to be introduced in every way in starch thus to form the multiple starch derivatives such as such as etherification starch, graft copolymerization starch, crosslinked starch, esterification starch.Wherein cationic starch is since 20th century, the sixties started suitability for industrialized production abroad, has become the starch derivatives of being used widely in many fields such as papermaking, weaving, oil drilling, sewage disposal, household chemicals.
Magnetic adsorptive material due to have mass transfer rate fast, under magnetic fields, be easy to the feature that is separated and be widely used in the occasion such as wastewater treatment, bio-separation.Wherein inorganic magnetic sorbing material is as lower for the adsorption capacity of heavy metal ion and dye molecule in magnetic clay, magnetic zeolite etc., and natural organic high-molecular polymer is due to cheap and easy to get, and is widely used in the preparation of organic magnetic sorbing material.
Polyacrylamide is as a kind of wire water soluble polymer flocculant, and owing to its strand having the side base-amide groups identical with acrylamide unit number, and amide groups has high polarity, easily forms hydrogen bond and high reaction activity.Polyacrylamide, by graft reaction, is grafted on different substrates, synthesizes the functional material that a class is novel.
Summary of the invention
The technical problem that the present invention mainly solves: there is very high surface-active for current magnetic adsorptive material, be easy to reunite, and be difficult to after sorbent treatment waste water separate from solution, reclaim difficulty, secondary pollution, to the problem that environment works the mischief, provide the preparation method of a kind of magnetic polyacrylamide-cationic starch adsorbing material, the cationic starch that the present invention prepares has good biocompatibility, hydrophily and degradability, strand has and enriches hydroxyl, complexing can be carried out by heavy metal ion, ion-exchange or electrostatic attraction, polyacrylamide strand has a large amount of amino, these active groups have very strong complexing power for metal ion, so polyacrylamide can be utilized to carry out polyamino modification to cationic starch, carry out coated to inorganic magnetic tri-iron tetroxide simultaneously, composite adsorbing material can be obtained, application in the treatment of waste water, Adsorption of Heavy Metals Be very effective, easily separated recovery recycles again, and preparation technology is simple, cost is low.
In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is:
(1) get 15 ~ 20mL mass fraction 15 ~ 45% sodium hydroxide solution, in aqueous slkali, add 40 ~ 60g
Wheaten starch and 100 ~ 200mL distilled water, 30 ~ 50min is uniformly mixed at 30 ~ 50 DEG C of lower magnetic forces, mix in backward starch solution and add gross mass 5 ~ 8% epoxychloropropane, continue stirring reaction and form pulpous state, drip mass fraction 15% hydrochloric acid wherein again and regulate pH6.5 ~ 7.0, filter after regulating, by filter residue distilled water flushing 3 ~ 5 times;
(2) gross mass 5 ~ 15% mass fraction 33% trimethylamine solution will be added in the filter residue after above-mentioned flushing, homogenizer is uniformly mixed 30 ~ 40min, mixture being placed in temperature is carry out positive ionization 4 ~ 6h at 30 ~ 50 DEG C again, reaction terminates rear filtration, obtain product mass fraction 75% ethanolic solution cyclic washing 5 ~ 7 times, filtration, vacuum drying, be ground into 70 ~ 80 order powder, obtain cationic starch, for subsequent use;
(3) 4 ~ 6gFeCl is got
36H
2o and 8 ~ 10gFeCl
24H
2o is placed in the there-necked flask of 500mL, 180 ~ 200mL distilled water is added in bottle, stirring makes solid all dissolve, be configured to iron chloride and frerrous chloride mixed solution, put into 60 ~ 70 DEG C of water-baths, getting 45 ~ 55mL mass fraction 35% sodium hydroxide solution dropping funel is added drop-wise in flask, dropping limit, limit is stirred, remain on 30 ~ 40min to drip off, continue stirring reaction 1 ~ 3h, reaction terminates rear Magneto separate, the product distilled water flushing that separation obtains 3 ~ 5 times, obtain magnetic-particle, and magnetic-particle is joined in distilled water by solid-to-liquid ratio 1:5, carry out sonic oscillation process 30 ~ 40min, obtain magnetic suspension liquid,
(4) getting the cationic starch that 3 ~ 6g step (2) obtains joins in 500mL there-necked flask, in bottle
Add 200 ~ 220mL distilled water, 8 ~ 10h is left standstill after magnetic agitation 30 ~ 40min, obtain the cationic starch aqueous solution, 5:1 ~ 7:1 mixes with above-mentioned magnetic suspension liquid by volume wherein, and ultrasonic disperse is even, gross mass 0.5 ~ 0.8% polyacrylamide is added after dispersion, and Quick mechanical stirs 20 ~ 30min, gross mass 1 ~ 2% potassium persulfate is added after stirring, ultrasonic agitation 20 ~ 40min, mechanic whirl-nett reaction 1 ~ 2h at 50 ~ 80 DEG C again, after reaction terminates, reactant is carried out Magneto separate, it is neutral for being separated product distilled water flushing to the filtrate obtained, product is ground to form 70 ~ 80 order powder magnetic polyacrylamide-cationic starch adsorbing material.
Application process of the present invention: the present invention is obtained magnetic polyacrylamide-cationic starch adsorbing material and be applied in heavy metal containing wastewater treatment, to in 5 ~ 10L heavy metal wastewater thereby, at room temperature, Xiang Shuizhong adds adsorbent by 2 ~ 4g/L, first records metal ion initial concentration and is respectively Hg
2+be 250 ~ 380mg/L, Zn
2+be 208 ~ 269mg/L, Pb
2+be 67 ~ 85mg/L, Ag
+be 28 ~ 35mg/L, add rear mix and blend 15 ~ 20min, record metal ion and be respectively Hg
2+be 8 ~ 15mg/L, Zn
2+be 7 ~ 9mg/L, Pb
2+be 2 ~ 6mg/L, Ag
+be 0 ~ 2mg/L.
The invention has the beneficial effects as follows:
(1) cationic starch that prepared by the present invention has good biocompatibility, hydrophily and degradability, its strand has and enriches hydroxyl, can carry out complexing, ion-exchange or electrostatic attraction by heavy metal ion;
(2) the present invention obtains sorbing material application in the treatment of waste water, and adsorption effect is remarkable, and easily separated recovery recycles again, and preparation technology is simple, and cost is low.
Detailed description of the invention
First get 15 ~ 20mL mass fraction 15 ~ 45% sodium hydroxide solution, in aqueous slkali, add 40 ~ 60g
Wheaten starch and 100 ~ 200mL distilled water, 30 ~ 50min is uniformly mixed at 30 ~ 50 DEG C of lower magnetic forces, mix in backward starch solution and add gross mass 5 ~ 8% epoxychloropropane, continue stirring reaction and form pulpous state, drip mass fraction 15% hydrochloric acid wherein again and regulate pH6.5 ~ 7.0, filter after regulating, by filter residue distilled water flushing 3 ~ 5 times, gross mass 5 ~ 15% mass fraction 33% trimethylamine solution is added by the filter residue after flushing, homogenizer is uniformly mixed 30 ~ 40min, mixture being placed in temperature is carry out positive ionization 4 ~ 6h at 30 ~ 50 DEG C again, reaction terminates rear filtration, obtain product mass fraction 75% ethanolic solution cyclic washing 5 ~ 7 times, filtration, vacuum drying, be ground into 70 ~ 80 order powder, obtain cationic starch, for subsequent use, get 4 ~ 6gFeCl
36H
2o and 8 ~ 10gFeCl
24H
2o is placed in the there-necked flask of 500mL, 180 ~ 200mL distilled water is added in bottle, stirring makes solid all dissolve, be configured to iron chloride and frerrous chloride mixed solution, put into 60 ~ 70 DEG C of water-baths, getting 45 ~ 55mL mass fraction 35% sodium hydroxide solution dropping funel is added drop-wise in flask, dropping limit, limit is stirred, remain on 30 ~ 40min to drip off, continue stirring reaction 1 ~ 3h, reaction terminates rear Magneto separate, the product distilled water flushing that separation obtains 3 ~ 5 times, obtain magnetic-particle, and magnetic-particle is joined in distilled water by solid-to-liquid ratio 1:5, carry out sonic oscillation process 30 ~ 40min, obtain magnetic suspension liquid, getting the cationic starch that 3 ~ 6g obtains joins in 500mL there-necked flask, in bottle
Add 200 ~ 220mL distilled water, 8 ~ 10h is left standstill after magnetic agitation 30 ~ 40min, obtain the cationic starch aqueous solution, 5:1 ~ 7:1 mixes with magnetic suspension liquid by volume wherein, and ultrasonic disperse is even, gross mass 0.5 ~ 0.8% polyacrylamide is added after dispersion, and Quick mechanical stirs 20 ~ 30min, gross mass 1 ~ 2% potassium persulfate is added after stirring, ultrasonic agitation 20 ~ 40min, mechanic whirl-nett reaction 1 ~ 2h at 50 ~ 80 DEG C again, after reaction terminates, reactant is carried out Magneto separate, it is neutral for being separated product distilled water flushing to the filtrate obtained, product is ground to form 70 ~ 80 order powder magnetic polyacrylamide-cationic starch adsorbing material.
Example 1
First 15mL mass fraction 15% sodium hydroxide solution is got, 40g wheaten starch and 100mL distilled water is added in aqueous slkali, 30min is uniformly mixed at 30 DEG C of lower magnetic forces, mix in backward starch solution and add gross mass 5% epoxychloropropane, continue stirring reaction and form pulpous state, drip mass fraction 15% hydrochloric acid wherein again and regulate pH6.5, filter after regulating, by filter residue distilled water flushing 3 times, gross mass 5% mass fraction 33% trimethylamine solution is added by the filter residue after flushing, homogenizer is uniformly mixed 30min, mixture being placed in temperature is carry out positive ionization 4h at 30 DEG C again, reaction terminates rear filtration, obtain product mass fraction 75% ethanolic solution cyclic washing 5 times, filtration, vacuum drying, be ground into 70 order powder, obtain cationic starch, for subsequent use, get 4gFeCl
36H
2o and 8gFeCl
24H
2o is placed in the there-necked flask of 500mL, 180mL distilled water is added in bottle, stirring makes solid all dissolve, be configured to iron chloride and frerrous chloride mixed solution, put into 60 DEG C of water-baths, getting 45mL mass fraction 35% sodium hydroxide solution dropping funel is added drop-wise in flask, dropping limit, limit is stirred, remain on 30min to drip off, continue stirring reaction 1h, reaction terminates rear Magneto separate, the product distilled water flushing that separation obtains 3 times, obtain magnetic-particle, and magnetic-particle is joined in distilled water by solid-to-liquid ratio 1:5, carry out sonic oscillation process 30min, obtain magnetic suspension liquid, getting the cationic starch that 3g obtains joins in 500mL there-necked flask, 200mL distilled water is added in bottle, 8h is left standstill after magnetic agitation 30min, obtain the cationic starch aqueous solution, 5:1 mixes with magnetic suspension liquid by volume wherein, and ultrasonic disperse is even, gross mass 0.5% polyacrylamide is added after dispersion, and Quick mechanical stirs 20min, gross mass 1% potassium persulfate is added after stirring, ultrasonic agitation 20min, mechanic whirl-nett reaction 1h at 50 DEG C again, after reaction terminates, reactant is carried out Magneto separate, it is neutral for being separated product distilled water flushing to the filtrate obtained, product is ground to form 70 order powder magnetic polyacrylamide-cationic starch adsorbing material.
The present invention being obtained magnetic polyacrylamide-cationic starch adsorbing material is applied in heavy metal containing wastewater treatment, and in 5L heavy metal wastewater thereby, at room temperature, Xiang Shuizhong adds adsorbent by 2g/L, first records metal ion initial concentration and is respectively Hg
2+for 250mg/L, Zn
2+for 208mg/L, Pb
2+for 67mg/L, Ag
+for 28mg/L, add rear mix and blend 15min, record metal ion and be respectively Hg
2+for 15mg/L, Zn
2+for 9mg/L, Pb
2+for 6mg/L, Ag
+for 2mg/L.
Example 2
First 17mL mass fraction 30% sodium hydroxide solution is got, 50g wheaten starch and 150mL distilled water is added in aqueous slkali, 40min is uniformly mixed at 40 DEG C of lower magnetic forces, mix in backward starch solution and add gross mass 6% epoxychloropropane, continue stirring reaction and form pulpous state, drip mass fraction 15% hydrochloric acid wherein again and regulate pH6.8, filter after regulating, by filter residue distilled water flushing 4 times, gross mass 10% mass fraction 33% trimethylamine solution is added by the filter residue after flushing, homogenizer is uniformly mixed 35min, mixture being placed in temperature is carry out positive ionization 5h at 40 DEG C again, reaction terminates rear filtration, obtain product mass fraction 75% ethanolic solution cyclic washing 6 times, filtration, vacuum drying, be ground into 75 order powder, obtain cationic starch, for subsequent use, get 5gFeCl
36H
2o and 9gFeCl
24H
2o is placed in the there-necked flask of 500mL, 190mL distilled water is added in bottle, stirring makes solid all dissolve, be configured to iron chloride and frerrous chloride mixed solution, put into 65 DEG C of water-baths, getting 50mL mass fraction 35% sodium hydroxide solution dropping funel is added drop-wise in flask, dropping limit, limit is stirred, remain on 35min to drip off, continue stirring reaction 2h, reaction terminates rear Magneto separate, the product distilled water flushing that separation obtains 4 times, obtain magnetic-particle, and magnetic-particle is joined in distilled water by solid-to-liquid ratio 1:5, carry out sonic oscillation process 35min, obtain magnetic suspension liquid, getting the cationic starch that 5g obtains joins in 500mL there-necked flask, 210mL distilled water is added in bottle, 9h is left standstill after magnetic agitation 35min, obtain the cationic starch aqueous solution, 6:1 mixes with magnetic suspension liquid by volume wherein, and ultrasonic disperse is even, gross mass 0.7% polyacrylamide is added after dispersion, and Quick mechanical stirs 25min, gross mass 1.5% potassium persulfate is added after stirring, ultrasonic agitation 30min, mechanic whirl-nett reaction 1.5h at 75 DEG C again, after reaction terminates, reactant is carried out Magneto separate, it is neutral for being separated product distilled water flushing to the filtrate obtained, product is ground to form 75 order powder magnetic polyacrylamide-cationic starch adsorbing material.
The present invention being obtained magnetic polyacrylamide-cationic starch adsorbing material is applied in heavy metal containing wastewater treatment, and in 8L heavy metal wastewater thereby, at room temperature, Xiang Shuizhong adds adsorbent by 3g/L, first records metal ion initial concentration and is respectively Hg
2+for 320mg/L, Zn
2+for 235mg/L, Pb
2+for 76mg/L, Ag
+for 32mg/L, add rear mix and blend 17min, record metal ion and be respectively Hg
2+for 12mg/L, Zn
2+for 8mg/L, Pb
2+for 4mg/L, Ag
+for 1mg/L.
Example 3
First 20mL mass fraction 45% sodium hydroxide solution is got, 60g wheaten starch and 200mL distilled water is added in aqueous slkali, 50min is uniformly mixed at 50 DEG C of lower magnetic forces, mix in backward starch solution and add gross mass 8% epoxychloropropane, continue stirring reaction and form pulpous state, drip mass fraction 15% hydrochloric acid wherein again and regulate pH7.0, filter after regulating, by filter residue distilled water flushing 5 times, gross mass 15% mass fraction 33% trimethylamine solution is added by the filter residue after flushing, homogenizer is uniformly mixed 40min, mixture being placed in temperature is carry out positive ionization 6h at 50 DEG C again, reaction terminates rear filtration, obtain product mass fraction 75% ethanolic solution cyclic washing 7 times, filtration, vacuum drying, be ground into 80 order powder, obtain cationic starch, for subsequent use, get 6gFeCl
36H
2o and 10gFeCl
24H
2o is placed in the there-necked flask of 500mL, 200mL distilled water is added in bottle, stirring makes solid all dissolve, be configured to iron chloride and frerrous chloride mixed solution, put into 70 DEG C of water-baths, getting 55mL mass fraction 35% sodium hydroxide solution dropping funel is added drop-wise in flask, dropping limit, limit is stirred, remain on 40min to drip off, continue stirring reaction 3h, reaction terminates rear Magneto separate, the product distilled water flushing that separation obtains 5 times, obtain magnetic-particle, and magnetic-particle is joined in distilled water by solid-to-liquid ratio 1:5, carry out sonic oscillation process 40min, obtain magnetic suspension liquid, getting the cationic starch that 6g obtains joins in 500mL there-necked flask, 220mL distilled water is added in bottle, 10h is left standstill after magnetic agitation 40min, obtain the cationic starch aqueous solution, 7:1 mixes with magnetic suspension liquid by volume wherein, and ultrasonic disperse is even, gross mass 0.8% polyacrylamide is added after dispersion, and Quick mechanical stirs 30min, gross mass 2% potassium persulfate is added after stirring, ultrasonic agitation 40min, mechanic whirl-nett reaction 2h at 80 DEG C again, after reaction terminates, reactant is carried out Magneto separate, it is neutral for being separated product distilled water flushing to the filtrate obtained, product is ground to form 80 order powder magnetic polyacrylamide-cationic starch adsorbing material.
The present invention being obtained magnetic polyacrylamide-cationic starch adsorbing material is applied in heavy metal containing wastewater treatment, and in 10L heavy metal wastewater thereby, at room temperature, Xiang Shuizhong adds adsorbent by 4g/L, first records metal ion initial concentration and is respectively Hg
2+for 380mg/L, Zn
2+for 269mg/L, Pb
2+for 85mg/L, Ag
+for 35mg/L, add rear mix and blend 20min, record metal ion and be respectively Hg
2+for 8mg/L, Zn
2+for 7mg/L, Pb
2+for 2mg/L, Ag
+for 0mg/L.
Claims (1)
1. a preparation method for magnetic polyacrylamide-cationic starch adsorbing material, is characterized in that concrete system
Standby step is:
(1) get 15 ~ 20mL mass fraction 15 ~ 45% sodium hydroxide solution, in aqueous slkali, add 40 ~ 60g
Wheaten starch and 100 ~ 200mL distilled water, 30 ~ 50min is uniformly mixed at 30 ~ 50 DEG C of lower magnetic forces, mix in backward starch solution and add gross mass 5 ~ 8% epoxychloropropane, continue stirring reaction and form pulpous state, drip mass fraction 15% hydrochloric acid wherein again and regulate pH6.5 ~ 7.0, filter after regulating, by filter residue distilled water flushing 3 ~ 5 times;
(2) gross mass 5 ~ 15% mass fraction 33% trimethylamine solution will be added in the filter residue after above-mentioned flushing, homogenizer is uniformly mixed 30 ~ 40min, mixture being placed in temperature is carry out positive ionization 4 ~ 6h at 30 ~ 50 DEG C again, reaction terminates rear filtration, obtain product mass fraction 75% ethanolic solution cyclic washing 5 ~ 7 times, filtration, vacuum drying, be ground into 70 ~ 80 order powder, obtain cationic starch, for subsequent use;
(3) 4 ~ 6gFeCl is got
36H
2o and 8 ~ 10gFeCl
24H
2o is placed in the there-necked flask of 500mL, 180 ~ 200mL distilled water is added in bottle, stirring makes solid all dissolve, be configured to iron chloride and frerrous chloride mixed solution, put into 60 ~ 70 DEG C of water-baths, getting 45 ~ 55mL mass fraction 35% sodium hydroxide solution dropping funel is added drop-wise in flask, dropping limit, limit is stirred, remain on 30 ~ 40min to drip off, continue stirring reaction 1 ~ 3h, reaction terminates rear Magneto separate, the product distilled water flushing that separation obtains 3 ~ 5 times, obtain magnetic-particle, and magnetic-particle is joined in distilled water by solid-to-liquid ratio 1:5, carry out sonic oscillation process 30 ~ 40min, obtain magnetic suspension liquid,
(4) getting the cationic starch that 3 ~ 6g step (2) obtains joins in 500mL there-necked flask, in bottle
Add 200 ~ 220mL distilled water, 8 ~ 10h is left standstill after magnetic agitation 30 ~ 40min, obtain the cationic starch aqueous solution, 5:1 ~ 7:1 mixes with above-mentioned magnetic suspension liquid by volume wherein, and ultrasonic disperse is even, gross mass 0.5 ~ 0.8% polyacrylamide is added after dispersion, and Quick mechanical stirs 20 ~ 30min, gross mass 1 ~ 2% potassium persulfate is added after stirring, ultrasonic agitation 20 ~ 40min, mechanic whirl-nett reaction 1 ~ 2h at 50 ~ 80 DEG C again, after reaction terminates, reactant is carried out Magneto separate, it is neutral for being separated product distilled water flushing to the filtrate obtained, product is ground to form 70 ~ 80 order powder magnetic polyacrylamide-cationic starch adsorbing material.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105692851A (en) * | 2016-04-21 | 2016-06-22 | 苏州云舒新材料科技有限公司 | Method for treating wastewater on basis of magnetic polyacrylamide |
| CN108147518A (en) * | 2017-12-29 | 2018-06-12 | 湖南省塑料研究所有限公司 | Modified starch water treatment agent and its preparation method and application |
| CN109054322A (en) * | 2018-08-17 | 2018-12-21 | 巢湖市渔郎渔具有限公司 | A kind of degradable magnetic spin turns bionic fish bait material |
| CN109877143A (en) * | 2019-04-10 | 2019-06-14 | 黑龙江省农业科学院土壤肥料与环境资源研究所 | A kind of straw waste recycling and reusing processing method and adsorbent |
| CN110755969A (en) * | 2019-11-01 | 2020-02-07 | 劳美恒 | Haze remover |
| CN115400734A (en) * | 2022-08-26 | 2022-11-29 | 广西大学 | Preparation method and application of adsorbent for removing aluminum ions from manganese sulfate solution |
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2016
- 2016-01-29 CN CN201610062810.9A patent/CN105498730A/en not_active Withdrawn
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105692851A (en) * | 2016-04-21 | 2016-06-22 | 苏州云舒新材料科技有限公司 | Method for treating wastewater on basis of magnetic polyacrylamide |
| CN108147518A (en) * | 2017-12-29 | 2018-06-12 | 湖南省塑料研究所有限公司 | Modified starch water treatment agent and its preparation method and application |
| CN108147518B (en) * | 2017-12-29 | 2020-10-30 | 湖南省塑料研究所有限公司 | Modified starch water treatment agent and preparation method and application thereof |
| CN109054322A (en) * | 2018-08-17 | 2018-12-21 | 巢湖市渔郎渔具有限公司 | A kind of degradable magnetic spin turns bionic fish bait material |
| CN109877143A (en) * | 2019-04-10 | 2019-06-14 | 黑龙江省农业科学院土壤肥料与环境资源研究所 | A kind of straw waste recycling and reusing processing method and adsorbent |
| CN109877143B (en) * | 2019-04-10 | 2021-11-30 | 黑龙江省农业科学院土壤肥料与环境资源研究所 | Straw waste recycling treatment method and adsorbent |
| CN110755969A (en) * | 2019-11-01 | 2020-02-07 | 劳美恒 | Haze remover |
| CN115400734A (en) * | 2022-08-26 | 2022-11-29 | 广西大学 | Preparation method and application of adsorbent for removing aluminum ions from manganese sulfate solution |
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