CN108745270A - A kind of removing fluorine from water magnesium oxide composite material and the preparation method and application thereof - Google Patents
A kind of removing fluorine from water magnesium oxide composite material and the preparation method and application thereof Download PDFInfo
- Publication number
- CN108745270A CN108745270A CN201810601301.8A CN201810601301A CN108745270A CN 108745270 A CN108745270 A CN 108745270A CN 201810601301 A CN201810601301 A CN 201810601301A CN 108745270 A CN108745270 A CN 108745270A
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- China
- Prior art keywords
- magnesium oxide
- oxide composite
- composite material
- magnesia
- adhesive
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Classifications
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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
- B01J20/04—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium
- B01J20/041—Oxides or hydroxides
-
- 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
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
- B01J20/28016—Particle form
-
- 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
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/3042—Use of binding agents; addition of materials ameliorating the mechanical properties of the produced sorbent
-
- 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
-
- 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
Abstract
The present invention provides a kind of removing fluorine from water magnesium oxide composite materials and the preparation method and application thereof.Magnesia is wrapped in carrier surface by the defluorination material using inert particle as carrier, with adhesive, and makes its solidification, formed magnesium oxide composite material, wherein magnesia 30-50 parts, 0.1-20 parts of adhesive, 40-60 parts of carrier granular.The material had not only remained the adsorption-defluorination activity of magnesia, but also effectively had cured magnesia, greatly reduced its loss in use.The defluorination material have the characteristics that raw material sources it is abundant, it is cheap, prepare simple, and have higher fluorine removing rate, the fluorine removal demand of drinking water can be met.
Description
Technical field
The invention belongs to sorbing material fields, and in particular to a kind of removing fluorine from water magnesium oxide composite material and preparation method thereof
With application.
Background technology
Region Water fluorosis getting worse caused by global high-fluorine drinking water.Fluorine is the necessary trace element of human body
One of, but the fluorine content taken in excessively high can cause fluorine poisoning.
Human health problems caused by high-fluorine water are drunk, the damage of tooth and bone is concentrated mainly on（Tooth and bone fluorine
Poisoning）, DNA structure change（Gene mutation, inborn defect）And promote the generation of certain diseases（Cancer, Alzheimer disease,
Kidney and neurotrosis）Etc..Therefore, fluorine-containing drinking water is handled, reach the sanitary standard of drinking water always by
To the attention of scientific circles and departments of government.The defluorination method implemented at present mainly has the precipitation method, absorption method, electrodialysis
Method, hyperfiltration, ion-exchange etc..Wherein, absorption method is because good with defluorination effect, and technical maturity, equipment is simple, operation letter
Just the features such as, safety, sorbing material type is more, at low cost, and the influence to treated water solution is small, become drinking for most study
One of water fluoridation technology.
The most-often used sorbing material of absorption method is activated alumina sorbing material, and the cheap raw material of activated alumina is wide
It is general, but adsorption capacity is low, and aluminium component easily dissolves out in use, remains brain and nerve of the aluminium element in water to human body
System can cause serious harm.Therefore, the replacement sorbing material for finding activated alumina becomes the heat of many scholar's researchs
Point.The fluorine removing rate that domestic and international many scientists are experimentally confirmed magnesia is higher than equivalent aluminium oxide fluorine removing rate.Magnesia
The use of sorbing material solves the problems, such as aluminium element secondary injury caused by human body in water.
Magnesia is a kind of defluorination absorbing material of environmental type, is had due to its larger specific surface area and porosity
Stronger adsorption capacity, and it is nontoxic, it is a kind of defluorination absorbing material being worthy of popularization.But magnesia is powder
State, loss of active component is extremely serious during fluorine removal, it is difficult to be applied to actual conditions.Therefore, magnesia is carried out attached
The fixed main points for becoming and overcoming this defect.
Invention content
In order to solve the above technical problems, the object of the present invention is to provide a kind of preparations of removing fluorine from water magnesium oxide composite material
Method, the raw material sources of the defluorination material are abundant, cheap, preparation is simple.Its fluorine removing rate is higher, can meet to drinking water
Fluorine removal demand, have extensive actual application prospect.
To achieve the above object, the invention discloses following technology contents；
A kind of removing fluorine from water magnesium oxide composite material, it is characterised in that：It is made of the raw material of following weight score：Magnesia
30-50 parts, 0.1-20 parts of adhesive, 40-60 parts of carrier granular；Adhesive therein is cellulose acetate or polystyrene；It carries
Body particle is activated carbon, chitosan, diatomite, glass microsphere or polytetrafluoroethylene (PTFE).
The present invention further discloses the preparation methods of removing fluorine from water magnesium oxide composite material, it is characterised in that presses as follows
Step carries out：
（1）Adhesive is dissolved with solvent；The ratio of adhesive and solvent is 1:5-1:30（w:v）；
（2）Carrier granular is added in adherency agent solution, stirring is uniformly mixed；
（3）Magnesia is added, is uniformly mixed.Magnesia-adhesive-carrier granular compound is made；
（4）Magnesia-adhesive-carrier granular compound is placed on the solidification of oven high temperature, temperature is 110-230 DEG C, high
Warm hardening time is to obtain magnesium oxide composite material in 10-180 minutes；It is preferred that magnesia compound hot setting required temperature is
150-230 DEG C, the hot setting time is 20-180 minutes.The solvent is in acetone, dimethylformamide, tetrahydrofuran
It is one or two kinds of.The solvent of two of which refers to：Dimethylformamide:Tetrahydrofuran=4:6（v:v）Mixed solvent.
The present invention further discloses removing fluorine from water magnesium oxide composite material F in effectively improving drinking water-Absorption
Application in terms of rate.Especially stream of removing fluorine from water magnesium oxide composite material during effectively solidification magnesia reduces its use
Application in terms of mistake.
In the present invention, a kind of work in activated carbon, chitosan, diatomite, glass microsphere and polytetrafluoroethylene (PTFE) may be selected
For carrier granular；With one kind in cellulose acetate and polystyrene for adhesive.
In carrier granular outer wrapping magnesia, so that magnesia is effectively cured in carrier particle surface, both greatly reduced
Loss of magnesia during fluorine removal, and effectively play the characterization of adsorption of magnesia fluorine removal.In preparation process, oxidation
Through 150-230 DEG C of hot setting 20-180 minutes, it is compound to obtain magnesia in an oven for magnesium-adhesive-carrier granular compound
Material.
Magnesium oxide composite material of the present invention, employed in preparation process is all harmless substance,
It will not cause secondary pollution when handling high-fluorine water.
Description of the drawings
Fig. 1 is the fluorine-containing solution F of 1 defluorination effect of embodiment-Influence of the concentration to adsorption rate；
Fig. 2 is influence of the soaking time of the magnesium oxide composite material of 2 defluorination effect of embodiment to adsorption rate.
Specific implementation mode
The present invention is described below by specific embodiment.Unless stated otherwise, technological means used in the present invention
It is method known in those skilled in the art.In addition, embodiment is interpreted as illustrative, it is not intended to limit the present invention
Range, the spirit and scope of the invention are limited only by the claims that follow.To those skilled in the art, without departing substantially from this
Under the premise of invention spirit and scope, in these embodiments various changes or change also belong to the present invention protection model
It encloses.The raw materials used in the present invention is commercially available.
Embodiment 1
A kind of removing fluorine from water magnesium oxide composite material, it is made of the raw material of following weight score：30 parts of magnesia, adherency
2 parts of agent, 40 parts of carrier granular；Adhesive therein is cellulose acetate；Carrier granular is activated carbon.
Preparation method：
（1）Adhesive is dissolved with solvent；The ratio of adhesive and solvent is 1:5（w:v）；
（2）Carrier granular is added in adherency agent solution, stirring is uniformly mixed；
（3）Magnesia is added, is uniformly mixed.Magnesia-adhesive-carrier granular compound is made；
（4）Magnesia-adhesive-carrier granular compound is placed on the solidification of oven high temperature, temperature is 180 DEG C, and high temperature is solid
It is to obtain magnesium oxide composite material in 30 minutes to change the time；The solvent is acetone.
【The defluorination effect of embodiment 1】
Defluorination effect of the magnesium oxide composite material in the fluorine-containing solution of various concentration
By magnesium oxide composite material loaded in filter paper bag, it is soaked in F-Concentration is respectively 4.75,9.50,14.25,19.00mg/L
In fluorine-containing solution, the ratio between magnesium oxide composite material and fluorine-containing solution are 1:16（w:v）.Sorbing material stands 3h in fluorine-containing solution
Afterwards, it takes 1ml solution to carry out fluorinion concentration measurement, obtains defluorination material to F-Adsorption rate and to different initial fluorinion concentrations
Adsorption effect evaluated.Magnesium oxide composite material is to F in solution-Absorption result as shown in table 1 and Fig. 1；
This time experimental result is shown, in, low F-In strength solution, the magnesium oxide composite material is in 4.75 ~ 14.25mg/L concentration
Fluorine-containing solution in impregnate 3h after, the fluorinion concentration in water can be reduced to 1.0 mg/L hereinafter, can reach drinking water country
Critical field meets potable water guidelines.The magnesium oxide composite material is stronger to fluorine ion adsorption capacity, and defluorination effect is preferable.
Embodiment 2
A kind of removing fluorine from water magnesium oxide composite material, it is made of the raw material of following weight score：50 parts of magnesia, adhesive
10 parts, 60 parts of carrier granular；Adhesive therein is polystyrene；Carrier granular is chitosan.
Preparation method：
（1）Adhesive is dissolved with solvent；The ratio of adhesive and solvent is 1:30（w:v）；
（2）Carrier granular is added in adherency agent solution, stirring is uniformly mixed；
（3）Magnesia is added, is uniformly mixed.Magnesia-adhesive-carrier granular compound is made；
（4）Magnesia-adhesive-carrier granular compound is placed on the solidification of oven high temperature, temperature is 150 DEG C, and high temperature is solid
It is to obtain magnesium oxide composite material in 20 minutes to change the time；The solvent is dimethylformamide:Tetrahydrofuran=4:6（v:v）.
【The defluorination effect of embodiment 2】
Influence of soaking time of the magnesium oxide composite material in fluorine-containing solution to defluorination effect
By magnesium oxide composite material loaded in 4 filter paper bags, it is soaked in 4 parts of F respectively-In the fluorine-containing solution of a concentration of 9.5mg/L,
The ratio between magnesium oxide composite material and fluorine-containing solution are 1:16（w:v）.The soaking time of 4 magnesium oxide composite materials is respectively
1.5h, 2h, 3h and 4h then take 1ml liquid to carry out fluorinion concentration measurement, obtain corresponding adsorption rate.Measurement result such as table 2
Shown in shown in Fig. 2；
This time experimental result is shown, with the extension of magnesium oxide composite material soaking time in the fluorine-containing solution of 9.5mg/L,
To F-Adsorption rate gradually increase, F in scavenging solution-Concentration continuously decreases.After impregnating 3h, fluorinion concentration reaches 0.49mg/ in water
L is hereinafter, be less than the horizontal 1.0mg/L of national drinking water standard.
Embodiment 3
A kind of removing fluorine from water magnesium oxide composite material, it is made of the raw material of following weight score：45 parts of magnesia, adhesive
18 parts, 55 parts of carrier granular；Adhesive therein is cellulose acetate；Carrier granular is diatomite.
Preparation method：
（1）Adhesive is dissolved with solvent；The ratio of adhesive and solvent is 1:25（w:v）；
（2）Carrier granular is added in adherency agent solution, stirring is uniformly mixed；
（3）Magnesia is added, is uniformly mixed.Magnesia-adhesive-carrier granular compound is made；
（4）Magnesia-adhesive-carrier granular compound is placed on the solidification of oven high temperature, temperature is 230 DEG C, and high temperature is solid
It is to obtain magnesium oxide composite material in 150 minutes to change the time；The solvent is acetone.
【The defluorination effect of embodiment 3】
The solidification effect of magnesia and the change of fluoride removing rate is used for multiple times in magnesium oxide composite material
Magnesium oxide composite material is put in filter paper bag, F is soaked in-The fluorine-containing solution of a concentration of 9.5mg/L, magnesia composite wood
The ratio between material and fluorine-containing solution are 1:16（w:v）.After impregnating 3h, 1ml solution is taken to measure fluorinion concentration.Then rushed with deionized water
Filter wash paper bag, repeats aforesaid operations 2 times, calculates separately the adsorption rate that magnesium oxide composite material uses every time.Probe into the adsorption material
Adhesive changes the solidification effect of magnesia and nonexpondable adsorption rate in material.The results are shown in Table 3：
For the magnesium oxide composite material during being used for multiple times, magnesia does not occur wastage substantially, and adhesive is to magnesia
Solidification effect it is preferable.
This time experimental result is shown, as magnesium oxide composite material reuses increasing for number, sorbing material is to F-'s
Adsorption rate is in slight downward trend, but is in higher level.
Claims (6)
1. a kind of removing fluorine from water magnesium oxide composite material, it is characterised in that：It is made of the raw material of following portions by weight：Oxidation
30-50 parts of magnesium, 0.1-20 parts of adhesive, 40-60 parts of carrier granular；Adhesive therein is cellulose acetate or polystyrene；
Carrier granular is activated carbon, chitosan, diatomite, glass microsphere or polytetrafluoroethylene (PTFE).
2. the preparation method of removing fluorine from water magnesium oxide composite material described in claim 1, it is characterised in that press following step
It carries out：
（1）Adhesive is dissolved with solvent；The ratio of adhesive and solvent is 1:5-1:30（w:v）；
（2）Carrier granular is added in adherency agent solution, stirring is uniformly mixed；
（3）Magnesia is added, is uniformly mixed；Magnesia-adhesive-carrier granular compound is made；
（4）Magnesia-adhesive-carrier granular compound is placed on the solidification of oven high temperature, temperature is 110-230 DEG C, high
Warm hardening time is to obtain magnesium oxide composite material in 10-180 minutes；The solvent is acetone, dimethylformamide, tetrahydrochysene furan
One or both of mutter.
3. the preparation method of the removing fluorine from water magnesium oxide composite material described in claim 2, it is characterised in that the solvent is two
Methylformamide:Tetrahydrofuran=4:6（v:v）Mixed solvent.
4. the preparation method of the removing fluorine from water magnesium oxide composite material described in claim 2, it is characterised in that magnesia compound
Hot setting required temperature is 150-230 DEG C, and the hot setting time is 20-180 minutes.
5. removing fluorine from water magnesium oxide composite material F in effectively improving drinking water described in claim 1-Adsorption rate in terms of
Using.
6. removing fluorine from water magnesium oxide composite material described in claim 1 cures effective during magnesia reduces its use
Application in terms of loss.
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| CN201810601301.8A CN108745270A (en) | 2018-06-12 | 2018-06-12 | A kind of removing fluorine from water magnesium oxide composite material and the preparation method and application thereof |
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| CN201810601301.8A CN108745270A (en) | 2018-06-12 | 2018-06-12 | A kind of removing fluorine from water magnesium oxide composite material and the preparation method and application thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109718739A (en) * | 2019-01-16 | 2019-05-07 | 上海利物盛纳米科技有限公司 | Antibacterial type graphene modified carbon leaching material and preparation method thereof for Water warfare |
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| CN103084139A (en) * | 2012-12-20 | 2013-05-08 | 中国科学院生态环境研究中心 | Alumina de-fluorination adsorption material loaded by hard carrier and preparation method of alumina de-fluorination adsorption material |
| CN104841365A (en) * | 2015-04-29 | 2015-08-19 | 长沙清能环保科技有限公司 | Composite fluorine removal agent and preparation method |
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2018
- 2018-06-12 CN CN201810601301.8A patent/CN108745270A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1994517A (en) * | 2006-12-22 | 2007-07-11 | 北京佳康尔水处理技术有限公司 | Filter core for removing fluorine from drinking water and preparation method thereof |
| CN103084139A (en) * | 2012-12-20 | 2013-05-08 | 中国科学院生态环境研究中心 | Alumina de-fluorination adsorption material loaded by hard carrier and preparation method of alumina de-fluorination adsorption material |
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Non-Patent Citations (1)
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| SAIRAM SUNDARAM: "Defluoridation of water using magnesia/chitosan composite", 《JOURNAL OF HAZARDOUS MATERIALS》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109718739A (en) * | 2019-01-16 | 2019-05-07 | 上海利物盛纳米科技有限公司 | Antibacterial type graphene modified carbon leaching material and preparation method thereof for Water warfare |
| CN109718739B (en) * | 2019-01-16 | 2021-12-03 | 上海利物盛纳米科技有限公司 | Bacteriostatic graphene modified activated carbon filter material for water purification and preparation method thereof |
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Application publication date: 20181106 |