CN108554373A - A kind of preparation method of hydrotalcite de-fluoridation adsorbent - Google Patents
A kind of preparation method of hydrotalcite de-fluoridation adsorbent Download PDFInfo
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- CN108554373A CN108554373A CN201810514830.4A CN201810514830A CN108554373A CN 108554373 A CN108554373 A CN 108554373A CN 201810514830 A CN201810514830 A CN 201810514830A CN 108554373 A CN108554373 A CN 108554373A
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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
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/12—Naturally occurring clays or bleaching earth
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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
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
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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
- C02F2101/12—Halogens or halogen-containing compounds
- C02F2101/14—Fluorine or fluorine-containing compounds
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- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The present invention relates to a kind of preparation methods of hydrotalcite de-fluoridation adsorbent, belong to adsorbent preparing technical field.The present invention is using magnalium hydrotalcite as raw material, and be soaked in water hydrotalcite first, recycles liquid nitrogen frozen, it is put into pulverizer and crushes, then will be enriched in egg white and the acetum mixing of protein, minced using mixed liquor dipping hydrotalcite powder, it is first aerobic mouldy, anaerobic fermentation again finally obtains hydrotalcite de-fluoridation adsorbent finally by the adsorbent crude product high-temperature calcination for fermenting modified and acidleach, de-fluoridation adsorbent produced by the present invention, adsorption capacity is high, and defluorination effect is good, has broad application prospects.
Description
Technical field
The present invention relates to a kind of preparation methods of hydrotalcite de-fluoridation adsorbent, belong to adsorbent preparing technical field.
Background technology
Fluorine is that nonmetal character is most strong in all elements, is in gaseous state, valence shell electronic structure 2s at normal temperatures and pressures22p5,
Atomic radius is 64pm, and fluorine is predominantly in the form of fluorite, ice crystal and fluor-apatite nature.Fluorine is that human body is necessary
Beneficial element, respectively tissue is fluorine-containing for human body, most with the fluorinated volume of tooth, bone and hair.22nd world health in 1969
Tissue conference is made that the resolution of " recommending to add the pre- anti-caries of fluoride in tap water ".The supply and marketing of current toothpaste with fluoride is also
The measure taken for pre- anti-caries, however, the excessive of fluorine absorbs the harm generated to animals and plants and human body, considerably beyond
Influence of the fluorine deficiency to health.Fluorine content is excessively high, can influence the Ca,P metabolism of human body, make the metabolism of human body with
Disorder occurs for physiological function, to cause some fluorine poisoning symptoms such as fluorosis of bone, spot tooth.
Suitable fluorine can enhance the robustness of bone, there is certain prevention caries efficacy, suitable Funing tablet in drinking water
For 0.5~1.0 mg/L, but health can be damaged again by taking in excessive fluorine.Drinking-water is the main path that human body takes the photograph fluorine, but
High-fluorine water is widely distributed China, and the problem that fluorine content is exceeded in drinking water can be efficiently solved using technology of Fluoride Removal.
Existing technology of Fluoride Removal includes mainly absorption method, electrodialysis, ion-exchange, membrane technology etc..Wherein, it adsorbs
Method is most widely used, and is suitable for distributing drinking water treatment.And traditional alumina adsorption method from the sixties so far emphatically
It to act on greatly, but this method fluoride removing rate is relatively low, adsorption capacity is limited, inorganic mineral class sorbing material, the suction to fluorine ion
Attached effect is poor, cannot stablize the fluorine of fixed absorption, therefore, develops the critical issue that adsorbent efficiently, safe is absorption method.
Invention content
Present invention mainly solves the technical issues of, for traditional inorganic mineral and aluminium oxide defluorination absorbing material at present
It is low that there are fluoride removing rates, and adsorption capacity is small to be caused poor to fluorine ion adsorption effect, cannot be stablized the defect of the fluorine of fixed absorption, be provided
A kind of preparation method of hydrotalcite de-fluoridation adsorbent.
In order to solve the above-mentioned technical problem, the technical solution adopted in the present invention is：
A kind of preparation method of hydrotalcite de-fluoridation adsorbent, it is characterised in that specifically preparation process is：
（1）It weighs magnalium hydrotalcite to impregnate into the water 3~5 days, takes out after immersion, freezed with liquid nitrogen spraying at once, it is cold
Magnalium hydrotalcite is put into pulverizer after jelly, smashes it through 50 mesh sieve, collects sieving powder, obtains pretreatment neatly
Stone；
（2）The acetum that egg white and mass fraction are 30% is stirred, mixed liquor is obtained, by mixed liquor and above-mentioned pre-
It is fitted into sonic oscillation instrument after processing hydrotalcite mixing, sonic oscillation dipping；
（3）After waiting for above-mentioned sonic oscillation dipping, it is separated by filtration to obtain filter residue with mono layer gauze, filter residue is put into fermentation tank
In, first fermentation tank opening is placed and stands 3~5 days in the greenhouse；
（4）It after waiting for above-mentioned standing, is sealed by fermentation, after fermentation, opens fermentation tank mouth, take out tunning, and be put into
Baking oven, it is dry, obtain adsorbent crude product；
（5）Adsorbent crude product obtained above is put into high-temperature calcination stove, is calcined, is discharged after calcining, use mass fraction
10~12h is impregnated for 30% hydrochloric acid solution, is rinsed 3~5 times with deionized water again after immersion, naturally dry is up to neatly
Ground mass de-fluoridation adsorbent.
Step（1）Described in liquid nitrogen spraying freezing time be 3~5min.
Step（2）Described in egg white and mass fraction be 30% the mass ratio of acetum be 1:3, it is stirred
Rotating speed be 200~300r/min, the time being stirred be 15~20min, the mass ratio of mixed liquor and pretreated water talcum
It is 10:1, the frequency of sonic oscillation dipping is 25~30kHz, and the time of sonic oscillation dipping is 12~15h.
Step（3）Described in greenhouse temperature be 25~30 DEG C, relative air humidity is 60~70%.
Step（4）Described in the temperature of sealing and fermenting be 35~45 DEG C, time of sealing and fermenting is 10~12 days, dry
Temperature be 105~110 DEG C, the dry time be 1~2h.
Step（5）Described in calcining temperature be 300~400 DEG C, calcination time be 2~3h.
The beneficial effects of the invention are as follows：
（1）The present invention is using magnalium hydrotalcite as raw material, and be soaked in water hydrotalcite first, recycles liquid nitrogen frozen, is put into pulverizer
Middle crushing, then egg white and the acetum mixing of protein are will be enriched in, it is minced using mixed liquor dipping hydrotalcite powder, it is first aerobic
It is mouldy, then anaerobic fermentation, finally by the adsorbent crude product high-temperature calcination for fermenting modified and acidleach, finally obtains hydrotalcite and remove
Fluorine adsorbent, the present invention makes moisture be sufficiently submerged in hydrotalcite layers hole by the soaked talcum of water logging first, then uses liquid nitrogen
Freezing, the principle to be become larger using water freezing volume so that hydrotalcite layers moisture freeze, play strut hydrotalcite layers away from effect
Fruit expands the interlamellar spacing of hydrotalcite so that thus adsorbent adsorption capacity made from hydrotalcite is improved, then by egg
The mixed liquor of cleer and peaceful acetic acid carries out ultrasonic immersing as modification liquid, to hydrotalcite so that and modification liquid penetrates into hydrotalcite layers, wherein
Acetic acid in modification liquid dissolves out the aluminium ion of magnalium hydrotalcite interlayer, so that its interlayer surface lattice vacancy is occurred, further carries
The high adsorption capacity of adsorbent, while the generation of these lattice vacancies, cause the reactivity of adsorbent itself to enhance,
The oxidisability of body is significantly improved, and the oxidisability of adsorbent of the present invention is strong, can be given birth to the water molecule reaction of its adsorption
At the hydroxyl radical free radical OH of strong oxidizing property, and hydroxyl radical free radical can generate organic freedom with fluorine ion pending in water
Base is allowed to structure destruction, and final oxygenolysis achievees the purpose that fluorine removal, improves the defluorination effect of adsorbent, and hydrotalcite layers
It can be combined again with the protein being rich in egg white by the aluminium ion of acid dissolution, during fermentation, protein degradation generates
A large amount of carboxyls by chlorion chelate adsorb, anchor at hydrotalcite layers, finally under the conditions of high-temperature calcination, protein degradation object
It is heated and is destroyed with the chelate that aluminium ion is formed, aluminium ion exposes again, and it is fixed to generate activated alumina for oxidation at high temperature
In hydrotalcite layers, when adsorbent is inserted in water, fluorine ion is migrated by discrete, turbulent and molecule diffusion by water body
Into boundary layer, be then diffused into adsorbent surface and hole by molecule, and with polymerizeing in its interlayer activated alumina
Precipitation reaction occurs for aluminium, and to reach fluorine removal, the purpose of fixed fluorine, the adsorbent fluorine of the present invention is firmly anchored at water
Talcum interlayer, therefore adsorb and stablize, adsorption effect is splendid, and the present invention is finally also using acid soak adsorbent, due to fermenting
Cheng Zhong, part basic group is introduced in hydrotalcite layers in protein, using acid soak so that these basic groups dissociate,
To increase positive charge quantity in hydrotalcite, the absorption property of adsorbent is improved again by charge attraction, have wide
Application prospect.
Specific implementation mode
Weigh magnalium hydrotalcite to impregnate into the water 3~5 days, be taken out at once after immersion, with liquid nitrogen spraying freezing 3~
Magnalium hydrotalcite is put into pulverizer by 5min after freezing, is crossed 50 mesh sieve after crushing 1~2h, is collected sieving powder, obtain
Pretreated water talcum；It is 1 in mass ratio:3 mix egg white with the acetum that mass fraction is 30%, with blender with 200
The rotating speed of~300r/min is stirred 15~20min, obtains mixed liquor, and mixed liquor and above-mentioned pretreated water talcum are pressed quality
Than being 10:It is fitted into sonic oscillation instrument after 1 mixing, with 12~15h of frequency ultrasound oscillation dipping of 25~30kHz；Wait for that ultrasound is shaken
After swinging dipping, it is separated by filtration to obtain filter residue with mono layer gauze, filter residue is put into fermentation tank, first place fermentation tank opening
3~5 days are stood in the greenhouse that temperature is 25~30 DEG C, relative air humidity is 60~70%；It waits after standing, sealing hair
Fermentation tank is placed under conditions of temperature is 35~45 DEG C and is sealed by fermentation 10~12 days, after fermentation, opens fermentation tank mouth, take out
Tunning, and it is put into baking oven, dry 1~2h, obtains adsorbent crude product at 105~110 DEG C；The adsorbent crude product that will be obtained
It is put into high-temperature calcination stove, after being heated to 300~400 DEG C, heat preservation 2~3h of calcining discharges after calcining, with quality point
Number impregnates 10~12h for 30% hydrochloric acid solution, is rinsed 3~5 times with deionized water again after immersion, naturally dry is up to water
Talcum base de-fluoridation adsorbent.
Example 1
It weighs magnalium hydrotalcite to impregnate into the water 3 days, be taken out at once after immersion, 3min, freezing are freezed with liquid nitrogen spraying
After magnalium hydrotalcite is put into pulverizer, crush 1h after cross 50 mesh sieve, collect sieving powder, obtain pretreatment neatly
Stone；It is 1 in mass ratio:3 mix egg white with the acetum that mass fraction is 30%, with blender turning with 200r/min
Speed is stirred 15min, obtains mixed liquor, is 10 in mass ratio by mixed liquor and above-mentioned pretreated water talcum:It is packed into after 1 mixing
In sonic oscillation instrument, with the frequency ultrasound oscillation dipping 12h of 25kHz；After waiting for sonic oscillation dipping, filtered with mono layer gauze
Isolated filter residue, filter residue is put into fermentation tank, and fermentation tank opening is first placed on to temperature is 25 DEG C, relative air humidity is
3 days are stood in 60% greenhouse；It waits after standing, sealed fermenter, is placed under conditions of temperature is 35 DEG C and is sealed by fermentation 10
It opens fermentation tank mouth, takes out tunning, and be put into baking oven after fermentation, and dry 1h, obtains adsorbent at 105 DEG C
Crude product；Obtained adsorbent crude product is put into high-temperature calcination stove, after being heated to 300 DEG C, heat preservation calcining 2h, calcining terminates
After discharge, with mass fraction be 30% hydrochloric acid solution impregnate 10h, after immersion again with deionized water rinse 3 times, dry in the air naturally
Dry hydrotalcite de-fluoridation adsorbent to obtain the final product.
Example 2
It weighs magnalium hydrotalcite to impregnate into the water 4 days, be taken out at once after immersion, 4min, freezing are freezed with liquid nitrogen spraying
After magnalium hydrotalcite is put into pulverizer, crush 2h after cross 50 mesh sieve, collect sieving powder, obtain pretreatment neatly
Stone；It is 1 in mass ratio:3 mix egg white with the acetum that mass fraction is 30%, with blender turning with 250r/min
Speed is stirred 18min, obtains mixed liquor, is 10 in mass ratio by mixed liquor and above-mentioned pretreated water talcum:It is packed into after 1 mixing
In sonic oscillation instrument, with the frequency ultrasound oscillation dipping 13h of 28kHz；After waiting for sonic oscillation dipping, filtered with mono layer gauze
Isolated filter residue, filter residue is put into fermentation tank, and fermentation tank opening is first placed on to temperature is 28 DEG C, relative air humidity is
4 days are stood in 65% greenhouse；It waits after standing, sealed fermenter, is placed under conditions of temperature is 40 DEG C and is sealed by fermentation 11
It opens fermentation tank mouth, takes out tunning, and be put into baking oven after fermentation, and dry 2h, obtains adsorbent at 108 DEG C
Crude product；Obtained adsorbent crude product is put into high-temperature calcination stove, after being heated to 350 DEG C, heat preservation calcining 2h, calcining terminates
After discharge, with mass fraction be 30% hydrochloric acid solution impregnate 11h, after immersion again with deionized water rinse 4 times, dry in the air naturally
Dry hydrotalcite de-fluoridation adsorbent to obtain the final product.
Example 3
It weighs magnalium hydrotalcite to impregnate into the water 5 days, be taken out at once after immersion, 5min, freezing are freezed with liquid nitrogen spraying
After magnalium hydrotalcite is put into pulverizer, crush 2h after cross 50 mesh sieve, collect sieving powder, obtain pretreatment neatly
Stone；It is 1 in mass ratio:3 mix egg white with the acetum that mass fraction is 30%, with blender turning with 300r/min
Speed is stirred 20min, obtains mixed liquor, is 10 in mass ratio by mixed liquor and above-mentioned pretreated water talcum:It is packed into after 1 mixing
In sonic oscillation instrument, with the frequency ultrasound oscillation dipping 15h of 30kHz；After waiting for sonic oscillation dipping, filtered with mono layer gauze
Isolated filter residue, filter residue is put into fermentation tank, and fermentation tank opening is first placed on to temperature is 30 DEG C, relative air humidity is
5 days are stood in 70% greenhouse；It waits after standing, sealed fermenter, is placed under conditions of temperature is 45 DEG C and is sealed by fermentation 12
It opens fermentation tank mouth, takes out tunning, and be put into baking oven after fermentation, and dry 2h, obtains adsorbent at 110 DEG C
Crude product；Obtained adsorbent crude product is put into high-temperature calcination stove, after being heated to 400 DEG C, heat preservation calcining 3h, calcining terminates
After discharge, with mass fraction be 30% hydrochloric acid solution impregnate 12h, after immersion again with deionized water rinse 5 times, dry in the air naturally
Dry hydrotalcite de-fluoridation adsorbent to obtain the final product.
Reference examples
With the aluminium oxide de-fluoridation adsorbent example as a contrast of company of Suzhou City production
Performance detection is carried out to the aluminium oxide de-fluoridation adsorbent in hydrotalcite de-fluoridation adsorbent produced by the present invention and reference examples,
Testing result is as shown in table 1：
Detection method：Batch defluoridation experiment is carried out to the fluorinated water of a concentration of 5.24 mg/L with two kinds of adsorbents respectively, 150
120 min are adsorbed in room temperature and dynamic fluorine removal experiment water sample passes through suction with 3~4ml/min under the hunting speed of~160r/min
Attached column.
1 performance test results of table
The de-fluoridation adsorbent produced by the present invention it can be seen from the detection data in upper table, adsorption capacity is high, and defluorination effect is good,
It has broad application prospects.
Claims (6)
1. a kind of preparation method of hydrotalcite de-fluoridation adsorbent, it is characterised in that specifically preparation process is：
（1）It weighs magnalium hydrotalcite to impregnate into the water 3~5 days, takes out after immersion, freezed with liquid nitrogen spraying at once, it is cold
Magnalium hydrotalcite is put into pulverizer after jelly, smashes it through 50 mesh sieve, collects sieving powder, obtains pretreatment neatly
Stone；
（2）The acetum that egg white and mass fraction are 30% is stirred, mixed liquor is obtained, by mixed liquor and above-mentioned pre-
It is fitted into sonic oscillation instrument after processing hydrotalcite mixing, sonic oscillation dipping；
（3）After waiting for above-mentioned sonic oscillation dipping, it is separated by filtration to obtain filter residue with mono layer gauze, filter residue is put into fermentation tank
In, first fermentation tank opening is placed and stands 3~5 days in the greenhouse；
（4）It after waiting for above-mentioned standing, is sealed by fermentation, after fermentation, opens fermentation tank mouth, take out tunning, and be put into
Baking oven, it is dry, obtain adsorbent crude product；
（5）Adsorbent crude product obtained above is put into high-temperature calcination stove, is calcined, is discharged after calcining, use mass fraction
10~12h is impregnated for 30% hydrochloric acid solution, is rinsed 3~5 times with deionized water again after immersion, naturally dry is up to neatly
Ground mass de-fluoridation adsorbent.
2. a kind of preparation method of hydrotalcite de-fluoridation adsorbent according to claim 1, it is characterised in that：Step（1）
Described in liquid nitrogen spraying freezing time be 3~5min.
3. a kind of preparation method of hydrotalcite de-fluoridation adsorbent according to claim 1, it is characterised in that：Step（2）
Described in egg white and mass fraction be 30% the mass ratio of acetum be 1:3, the rotating speed being stirred be 200~
300r/min, the time being stirred are 15~20min, and the mass ratio of mixed liquor and pretreated water talcum is 10:1, ultrasound is shaken
The frequency for swinging dipping is 25~30kHz, and the time of sonic oscillation dipping is 12~15h.
4. a kind of preparation method of hydrotalcite de-fluoridation adsorbent according to claim 1, it is characterised in that：Step（3）
Described in greenhouse temperature be 25~30 DEG C, relative air humidity is 60~70%.
5. a kind of preparation method of hydrotalcite de-fluoridation adsorbent according to claim 1, it is characterised in that：Step（4）
Described in the temperature of sealing and fermenting be 35~45 DEG C, time of sealing and fermenting is 10~12 days, dry temperature is 105~
110 DEG C, the dry time is 1~2h.
6. a kind of preparation method of hydrotalcite de-fluoridation adsorbent according to claim 1, it is characterised in that：Step（5）
Described in calcining temperature be 300~400 DEG C, calcination time be 2~3h.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116196222A (en) * | 2023-02-28 | 2023-06-02 | 上海沐良医疗器械有限公司 | Caries preventing additive, caries preventing material, dental diaphragm and invisible appliance |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130260990A1 (en) * | 2012-03-28 | 2013-10-03 | Samsung Electronics Co., Ltd. | Adsorbent for carbon dioxide, method of preparing the same, and capture module for carbon dioxide including the same |
| US20140175015A1 (en) * | 2011-06-20 | 2014-06-26 | Fujifilm Corporation | Water purification method |
| CN106179191A (en) * | 2016-08-25 | 2016-12-07 | 周荣 | A kind of the most more new material processes the method for lead waste water |
| CN106865677A (en) * | 2017-02-27 | 2017-06-20 | 沈阳化工大学 | The method that fluorine ion in stainless steel acid cleaning waste water is removed with magnalium hydrotalcite |
| CN107828239A (en) * | 2017-11-07 | 2018-03-23 | 常州建轩纺织品有限公司 | A kind of preparation method of high color fastness dye for fabrics |
| CN107903827A (en) * | 2017-11-10 | 2018-04-13 | 雷笑天 | A kind of preparation method of high-adhesion high temperature resistant anchoring adhesive |
-
2018
- 2018-05-25 CN CN201810514830.4A patent/CN108554373A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140175015A1 (en) * | 2011-06-20 | 2014-06-26 | Fujifilm Corporation | Water purification method |
| US20130260990A1 (en) * | 2012-03-28 | 2013-10-03 | Samsung Electronics Co., Ltd. | Adsorbent for carbon dioxide, method of preparing the same, and capture module for carbon dioxide including the same |
| CN106179191A (en) * | 2016-08-25 | 2016-12-07 | 周荣 | A kind of the most more new material processes the method for lead waste water |
| CN106865677A (en) * | 2017-02-27 | 2017-06-20 | 沈阳化工大学 | The method that fluorine ion in stainless steel acid cleaning waste water is removed with magnalium hydrotalcite |
| CN107828239A (en) * | 2017-11-07 | 2018-03-23 | 常州建轩纺织品有限公司 | A kind of preparation method of high color fastness dye for fabrics |
| CN107903827A (en) * | 2017-11-10 | 2018-04-13 | 雷笑天 | A kind of preparation method of high-adhesion high temperature resistant anchoring adhesive |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116196222A (en) * | 2023-02-28 | 2023-06-02 | 上海沐良医疗器械有限公司 | Caries preventing additive, caries preventing material, dental diaphragm and invisible appliance |
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Application publication date: 20180921 |