CN103071456B - Organic amine iodine ion adsorbent as well as preparation method and application thereof - Google Patents
Organic amine iodine ion adsorbent as well as preparation method and application thereof Download PDFInfo
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Abstract
The invention relates to a preparation method for an organic amine iodine ion adsorbent. The preparation method comprises the steps as follows: mixing di(gamma-trimethoxy methylsilicyl propyl) amine, oil-soluble organic amine and water to form a gel solution, wherein the volume ratio of di(gamma-trimethoxy methylsilicyl propyl) amine, oil-soluble organic amine and water is 1:(0.1-10):(0.2-10); ageing, washing and drying the obtained gel solution to obtain the gel block-shaped organic amine iodine ion adsorbent. The preparation method is simple in process and low in cost. The prepared organic amine iodine ion adsorbent is high in adsorption capacity, good in selectivity, high in mechanical strength and simple and efficient to elute and regenerate, can be used for removing iodine ions in radioactive wastes, acetic acid and sodium chloride with an adsorption method, does not cause secondary pollution, can be also used for extracting iodine ions from concentrated seawater, seaweed leach liquor, oil-gas field brine and salt lake brine, does not need to be oxidized, and has no limitation on the iodine content.
Description
[technical field]
The present invention relates to chemical separating substances technical field, be specifically related to a kind of iodine ion adsorbent, its preparation method and application.
[background technology]
If the radioiodine that nuclear reactor produces rationally is processed, or because of nuclear leakage accident can entered environment, as ocean, river, underground water etc., and accumulate in human body eventually through the various circulatory system, enter thyroid gland and carcinogenesis; Inevitably containing iodide in the acetic acid of iodomethane co catalysis low-pressure methanol carbonyl process synthesis, this can make the metallic catalyst poisoning and deactivation used in reaction using acetic acid as Material synthesis vinylacetate, reduces reaction yield; In addition, in caustic soda by whole bittern industry, can be deposited on ionic membrane with the form of periodate during iodide electrolysis, cause current efficiency attenuating, service life of ion-exchange membrane shortens, production declining.
Therefore, from nuke rubbish, remove radioactive iodine pollution, and become the focus of people's concern from acetic acid, bittern etc. containing removing iodine element iodine thing.
Provide in Chinese patent CN200710306055.5 and extract the technique of radioiodine from nuclear reactor, adopt alundum (Al2O3) or water and zirconia to adsorb, and with ammoniacal liquor or NaOH desorb; After US Patent No. 4615806 proposition adopts the macroreticular storng-acid cation exchange resin Adsorption For Ag ion or mercury ion with sulfonic acid group, remove the iodide in acetic acid, this resinoid mainly contains the Amberlyst 15 of Rohm & Haas company.
But, adopt alundum (Al2O3) or water and zirconia Adsorption of Radioactive iodine, adsorbent selective not high; When adopting ion exchange resin Amberlyst 15 to adsorb iodine, because silver ion or mercury ion can go out by drop from silver resin, technique also needs desilver or mercury.
On the other hand, iodine is a kind of very important chemical resource, is widely used in the fields such as food, medicine, agricultural, photosensitive material, metallurgy, military affairs.The iodine demand of China is 3000-4000t/a, and annual growth reaches 20%, but annual production is only 300t, and the degree of self-sufficiency is only 14.2%.Iodine is mainly stored in algae, oil gas field bittern, salt lake bittern, rock forming mineral and seawater.
At present, China mainly with algae, phosphorus ore, bittern etc. for raw material adopts ion-exchange or Air blowing method to carry iodine.The technique of ion-exchange is: after seaweed plants leachate hydrochloric acid or sulfuric acid acidation, hypochlorite oxidation are become molecular iodine, then use resin adsorption, with sodium sulfite, iodine is reduced to iodide ion and washes after absorption.The technique of Air blowing method is: after becoming molecular iodine containing iodine aqueous solution hydrochloric acid or sulfuric acid acidation, hypochlorite oxidation, blast hot-air, use alkali liquor absorption after iodine molecule is steamed with steam in Biodine.
But the acidifying in ion-exchange and Air blowing method technique, oxidation operation can change the component containing iodine system, and especially the grade requirement of Air blowing method to propiodal is higher, these two kinds of techniques are all not too applicable to the lower and brine systems that composition is complicated of iodine grade.So, the production of current domestic iodine mainly with marine alga and phosphorus ore for raw material, and bittern iodine resource not yet obtains abundant development and utilization.
[summary of the invention]
The technical problem to be solved in the present invention is existing iodine adsorbent poor selectivity, complex process, the shortcoming high to propiodal grade requirement.
Technical scheme of the present invention relates in one aspect to a kind of preparation method of organic amine iodine ion adsorbent, comprise the following steps: by two (γ-trimethoxy-silylpropyl) amine, oil-soluble organic amine, water mixing, to form coagulant liquid, wherein two (γ-trimethoxy-silylpropyl) amine: oil-soluble organic amine: the volume ratio of water can be 1:0.1-10:0.2-10; And by the ageing of gained coagulant liquid, washing, drying, obtain the organic amine iodine ion adsorbent of gel bulk.
In some embodiments, described preparation method can also comprise the organic amine iodine ion adsorbent of grinding described gel bulk, to form pulverous organic amine iodine ion adsorbent.
In some embodiments, described oil-soluble organic amine can be N235, trioctylamine, methyl chloride triamine, N1923,1-heptyl octylame, two (4-methyl-2-propyl amyl group) amine, N, N-dimethyl-g yl acetamide, 1,1,3,3,5,5,7,7,9,9 ,-decamethyl decyl amine, 1-(3-ethyl pentyl group)-4-ethyl octylame, two (1-isobutyl groups-3,5-dimethylhexanyl) amine, or their any mixture.
In some embodiments, the time of described mixing can be 0.5-5 minute.
In some embodiments, the time of described ageing can be 2-24 hour.
In some embodiments, described drying can carry out 3-12 hour at 40-90 DEG C.
The organic amine iodine ion adsorbent that the present invention provides preparation in accordance with the present invention to obtain on the other hand.
In some embodiments, described organic amine iodine ion adsorbent can be gel piece shape, graininess or Powdered.
Further aspect of the present invention provides this organic amine iodine ion adsorbent to remove for iodide ion and the method for iodide ion extraction, comprises and described organic amine iodine ion adsorbent is placed in acid Biodine adsorbs.
In some embodiments, described method can also comprise the step of regenerating organic amine iodine ion adsorbent: adsorbed the organic amine iodine ion adsorbent of iodide ion with weak alkaline aqueous solution wash-out; And be washed with water to neutrality, to obtain the organic amine iodine ion adsorbent regenerated.
In some embodiments, described weak alkaline aqueous solution can be the Na of 0.005-0.05mol/L
2cO
3or K
2cO
3the aqueous solution.
Beneficial effect of the present invention is: preparation method's technique of the present invention is simple, with low cost.The organic amine iodine ion adsorbent adsorption capacity prepared high, selective good, mechanical strength is good, and zeolite regeneration is simply efficient.When removing the iodide ion in radioactive waste, acetic acid and sodium chloride for absorption method, secondary pollution can not be caused.When the iodide ion for extracting in concentrated seawater, marine alga leachate and bittern, system is without the need to oxidation, and unrestricted to content of iodine.
[accompanying drawing explanation]
Fig. 1 is the method flow diagram of organic amine iodine ion adsorbent produced according to the present invention.
Fig. 2 schemes according to the SEM of organic amine iodine ion adsorbent of the present invention.
[detailed description of the invention]
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Fig. 1 illustrates according to embodiment of the present invention, the method flow of preparation organic amine iodine ion adsorbent.As seen from the figure, preparation method mainly comprises two steps: first by two (γ-trimethoxy-silylpropyl) amine, oil-soluble organic amine, water mixing, to form coagulant liquid.Afterwards, by coagulant liquid ageing, washing, drying, obtain the organic amine iodine ion adsorbent of gel bulk.
Two (γ-trimethoxy-silylpropyl) amine Gelation Conditions is simple and quick, can form the mixed gel of even structure, stable in properties, good, the according to the invention requirement of mechanical strength with oil-soluble organic amine.
Oil-soluble organic amine can provide the main functional group of absorption iodide ion, and oil-soluble can make the selective increase of adsorbent.Therefore can use any organic amine containing amido, imido grpup or tertiary amine groups in the present invention, common industrial organic amine comprises N235 (C
8-10trialkylamine mixture), trioctylamine (N204), methyl chloride triamine (N263), N1923 (C
9-14the mixture of dialkyl group methylamine), 1-heptyl octylame, two (4-methyl-2-propyl amyl group) amine, N, N-dimethyl-g yl acetamide (N503), 1,1,3,3,5,5,7,7,9,9,-decamethyl decyl amine, 1-(3-ethyl pentyl group)-4-ethyl octylame, two (1-isobutyl group-3,5-dimethylhexanyl) amine, or their any mixture.
Two (γ-trimethoxy-silylpropyl) amine: oil-soluble organic amine: the volume ratio of water can be 1:0.1-10:0.2-10.
Conventional mixed method can being adopted, as stirred, making system be formed uniformly coagulant liquid.According to the difference selecting raw material and relative quantity, incorporation time can be 0.5-5 minute usually.
Afterwards, by coagulant liquid ageing a period of time, to make gel reaction more abundant.Ageing also can adopt conventional method to carry out, and such as, in enclosed system, leaves standstill under environment temperature, humidity.According to the difference selecting raw material and relative quantity, digestion time can be 2-24 hour usually.Particularly, the content of the organic amine contained inside gel rubber system is more, and the time of required ageing is also relatively longer.
Gel after ageing is washed with water, to remove unnecessary alkaline matter.Need after washing gel to be carried out drying process, form the organic amine iodine ion adsorbent of gel bulk.The by-product carbinol that dry run can be removed the moisture in gel on the one hand and be obtained by reacting; Drying process can form hole in gel on the other hand, increases the specific area of adsorbent, is conducive to the absorption of iodide ion.Drying also can adopt conventional method to carry out, such as, dry.Baking temperature can not be too low, otherwise can cause moisture and accessory substance remaining; Baking temperature can not be too high, otherwise can destroy the pore structure of gel.Baking temperature is higher, then dry run required time is relatively shorter, otherwise then needs longer drying time.Such as, can at 40-90 DEG C of dry 3-12 hour in the present invention.
Preparation method's raw material of the present invention is easy to get, technique is simple, mild condition, with low cost.
Adsorbent of the present invention can be block, graininess or Powdered, all has good adsorption effect.Can for different absorption situations, such as absorption system, scale, equipment, separating technology etc. select suitable form.Particularly, compared with granule or pulverous adsorbent, there is larger specific area and solid-liquid contact area, be more conducive to absorption; But be separated comparatively difficult relative to adsorbent that is block or large grained.Therefore consider the factor of process aspect during practical application in industry, can select according to actual conditions.When needs use particle or pulverous adsorbent, preparation method of the present invention can further include the block gel of grinding, to obtain the step of particle or Powdered organic amine iodine ion adsorbent.
Organic amine iodine ion adsorbent prepared by this method has good adsorption effect to iodide ion, and high to the adsorption capacity of iodide ion in acid solution, mechanical strength is good, does not limit system iodide ion concentration.
Organic amine iodine ion adsorbent of the present invention both may be used for removing iodide ion from radioactive waste, acetic acid and sodium chloride, also may be used for extracting iodide ion from concentrated seawater, marine alga leachate and bittern.Using method is simple, only deposits at hydrogen ion and could be adsorbed in case, therefore, organic amine iodine ion adsorbent of the present invention directly can be placed in the acid solution containing iodide ion, with the iodide ion in adsorbent solution due to iodide ion.
Take out after absorption a period of time, and (such as concentration is the Na of 0.005-0.05mol/L with weak alkaline aqueous solution
2cO
3or K
2cO
3the aqueous solution) wash-out, its consumption can be solid-to-liquid ratio 1g:0.1-1L.Afterwards, can neutrality be washed with water to, to regenerate this iodine ion adsorbent, without the need to further drying, can direct reuse.
When there is other ions in solution, during as chlorion, organic amine iodine ion adsorbent of the present invention embodies the selective of excellence.
Organic amine iodine ion adsorbent of the present invention absorption and elution process do not relate to chemical reaction, therefore, when for iodide ion in Adsorption radioactive waste, acetic acid and sodium chloride, can not produce secondary pollution; When for iodide ion in adsorbing and extracting concentrated seawater, marine alga leachate, oil gas field bittern and salt lake bittern, system is without the need to oxidation, and unrestricted to content of iodine.
Embodiment
Set forth the present invention further by the following examples, these embodiments are only presented for purposes of illustration, do not limit the scope of the invention.Except the actual conditions indicated, the test method in embodiment all conveniently condition is carried out.
embodiment 1
By two (γ-trimethoxy-silylpropyl) amine, trialkylamine (N235), water according to volume ratio be 1:1:10 mixing, Keep agitation formed homogeneous gel liquid after 0.5 minute; By gained coagulant liquid ageing 2 hours, washing, in 40 DEG C of dryings 12 hours, obtain block gel.
After grinding is sieved, adopt this adsorbent to adsorb iodide ion in containing the acid solution (pH=2) of iodide ion, adsorption capacity is 381mg/g.
Use 0.01mol/L Na
2cO
3the aqueous solution is according to solid-to-liquid ratio 1g:0.5L wash-out, and eluting rate is 97%; Adsorb after wash-out after washing to neutrality, the adsorption capacity again of iodide ion is 370mg/g again.
Figure 2 shows that the SEM figure of the organic amine iodine ion adsorbent prepared according to this embodiment.As seen from the figure, gained adsorbent is the structure with hole and passage, has larger specific area.
embodiment 2
By two (γ-trimethoxy-silylpropyl) amine, trioctylamine (N204), water according to volume ratio be 1:10:5 mixing, Keep agitation formed homogeneous gel liquid after 5 minutes; By gained coagulant liquid ageing 24 hours, washing, in 90 DEG C of dryings 3 hours, obtain block gel.
Grinding gets granularity 5-200 object adsorbent after sieving, and adopt this adsorbent absorption iodide ion in acid solution (pH=2), adsorption capacity is 352mg/g.
Use 0.005mol/L Na
2cO
3the aqueous solution is according to solid-to-liquid ratio 1g:1L wash-out, and eluting rate is 98%; Adsorb after wash-out after washing to neutrality, the adsorption capacity again of iodide ion is 345mg/g again.
embodiment 3
By two (γ-trimethoxy-silylpropyl) amine, methyl chloride triamine (N263), water according to volume ratio be 1:0.5:0.2 mixing, Keep agitation formed homogeneous gel liquid after 2 minutes; By gained coagulant liquid ageing 6 hours, washing, in 60 DEG C of dryings 12 hours, obtain block gel.
After grinding is sieved, adopt this adsorbent absorption iodide ion in acid solution (pH=2), adsorption capacity is 302mg/g.
Use 0.02mol/L Na
2cO
3the aqueous solution is according to solid-to-liquid ratio 1g:0.2L wash-out, and eluting rate is 95%; Adsorb after wash-out after washing to neutrality, the adsorption capacity again of iodide ion is 286mg/g again.
embodiment 4
By two (γ-trimethoxy-silylpropyl) amine, dialkyl group methylamine (N1923), water according to volume ratio be 1:10:5 mixing, Keep agitation formed homogeneous gel liquid after 1 minute; By gained coagulant liquid ageing 6 hours, washing, in 90 DEG C of dryings 6 hours, obtain block gel.
Grinding gets granularity 20-60 object adsorbent after sieving, and adopt this adsorbent absorption iodide ion in acid solution (pH=2), adsorption capacity is 360mg/g.
Use 0.05mol/L K
2cO
3the aqueous solution is according to solid-to-liquid ratio 1g:0.1L wash-out, and eluting rate is 100%; Adsorb after wash-out after washing to neutrality, the adsorption capacity again of iodide ion is 360mg/g again.
embodiment 5
By two (γ-trimethoxy-silylpropyl) amine, 1-heptyl octylame, water according to volume ratio be 1:5:2 mixing, Keep agitation formed homogeneous gel liquid after 0.5 minute; By gained coagulant liquid ageing 2 hours, washing, in 70 DEG C of dryings 10 hours, obtain block gel.
Grinding obtains granularity 10-80 object adsorbent after sieving, and adopt this adsorbent absorption iodide ion in acid solution (pH=2), adsorption capacity is 335mg/g.
Use 0.01mol/L Na
2cO
3the aqueous solution is according to solid-to-liquid ratio 1g:0.5L wash-out, and eluting rate is 98%; Adsorb after wash-out after washing to neutrality, the adsorption capacity again of iodide ion is 328mg/g again.
embodiment 6
By two (γ-trimethoxy-silylpropyl) amine, two (4-methyl-2-propyl amyl group) amine, water according to volume ratio be 1:0.5:3 mixing, Keep agitation formed homogeneous gel liquid after 4 minutes; By gained coagulant liquid ageing 5 hours, washing, in 80 DEG C of dryings 10 hours, obtain block gel.
Grinding gets granularity 10-80 object adsorbent after sieving, and adopt this adsorbent absorption iodide ion in acid solution (pH=2), adsorption capacity is 356mg/g.
Use 0.02mol/L Na
2cO
3the aqueous solution is according to solid-to-liquid ratio 1g:0.1L wash-out, and eluting rate is 100%; Adsorb after wash-out after washing to neutrality, the adsorption capacity again of iodide ion is 356mg/g again.
embodiment 7
By two (γ-trimethoxy-silylpropyl) amine, N, N-dimethyl-g yl acetamide (N503), water according to volume ratio be 1:3:3 mixing, Keep agitation formed homogeneous gel liquid after 1 minute; By gained coagulant liquid ageing 10 hours, washing, in 80 DEG C of dryings 10 hours, obtain block gel.
After grinding is sieved, adopt this adsorbent absorption iodide ion in acid solution (pH=2), adsorption capacity is 420mg/g.
Use 0.01mol/L K
2cO
3the aqueous solution is according to solid-to-liquid ratio 1g:0.5L wash-out, and eluting rate is 100%; Adsorb after wash-out after washing to neutrality, the adsorption capacity again of iodide ion is 420mg/g again.
As the 1mol/L NaCl that coexists in adsorbent solution, (substance withdrawl syndrome compares Cl
-/ I
-=500), time, the adsorption capacity of iodine is 278mg/g.
embodiment 8
By two (γ-trimethoxy-silylpropyl) amine, 1,1,3,3,5,5,7,7,9,9 ,-decamethyl decyl amine, water are 1:5:10 mixing according to volume ratio, and Keep agitation formed homogeneous gel liquid after 5 minutes; By gained coagulant liquid ageing 24 hours, washing, in 40 DEG C of dryings 12 hours, obtain block gel.
After grinding is sieved, adopt this adsorbent absorption iodide ion in acid solution (pH=2), adsorption capacity is 331mg/g.
Use 0.02mol/L Na
2cO
3the aqueous solution is according to solid-to-liquid ratio 1g:0.5L wash-out, and eluting rate is 99%; Adsorb after wash-out after washing to neutrality, the adsorption capacity again of iodide ion is 328mg/g again.
embodiment 9
By two (γ-trimethoxy-silylpropyl) amine, 1-(3-ethyl pentyl group)-4-ethyl octylame, water according to volume ratio be 1:0.5:1 mixing, Keep agitation formed homogeneous gel liquid after 1 minute; By gained coagulant liquid ageing 8 hours, washing, in 80 DEG C of dryings 10 hours, obtain block gel.
After grinding is sieved, adopt this adsorbent absorption iodide ion in acid solution (pH=2), adsorption capacity is 298mg/g.
Use 0.04mol/L K
2cO
3the aqueous solution is according to solid-to-liquid ratio 1g:0.1L wash-out, and eluting rate is 99%; Adsorb after wash-out after washing to neutrality, the adsorption capacity again of iodide ion is 295mg/g again.
embodiment 10
By two (γ-trimethoxy-silylpropyl) amine, two (1-isobutyl group-3,5-dimethylhexanyl) amine, water according to volume ratio be 1:3:4 mixing, Keep agitation formed homogeneous gel liquid after 3 minutes; By gained coagulant liquid ageing 12 hours, washing, in 90 DEG C of dryings 4 hours, obtain block gel.
After grinding is sieved, adopt this adsorbent absorption iodide ion in acid solution (pH=2), adsorption capacity is 325mg/g.
Use 0.01mol/L Na
2cO
3the aqueous solution is according to solid-to-liquid ratio 1g:0.5L wash-out, and eluting rate is 100%; Adsorb after wash-out after washing to neutrality, the adsorption capacity again of iodide ion is 325mg/g again.
embodiment 11
By two (γ-trimethoxy-silylpropyl) amine, N, N-dimethyl-g yl acetamide (N503), 1-(3-ethyl pentyl group)-4-ethyl octylame, two (1-isobutyl groups-3,5-dimethylhexanyl) amine, water according to volume ratio be 1:1:1:2:8 mixing, Keep agitation formed homogeneous gel liquid after 4 minutes; By gained coagulant liquid ageing 6 hours, washing, in 70 DEG C of dryings 12 hours, obtain block gel.
After grinding is sieved, adopt this adsorbent absorption iodide ion in acid solution (pH=2), adsorption capacity is 359mg/g.
Use 0.02mol/L Na
2cO
3the aqueous solution is according to solid-to-liquid ratio 1g:0.3L wash-out, and eluting rate is 100%; Adsorb after wash-out after washing to neutrality, the adsorption capacity again of iodide ion is 360mg/g again.
embodiment 12
By two (γ-trimethoxy-silylpropyl) amine, trialkylamine (N235), 1,1,3,3,5,5,7,7,9,9 ,-decamethyl decyl amine, water are 1:2:1:10 mixing according to volume ratio, and Keep agitation formed homogeneous gel liquid after 5 minutes; By gained coagulant liquid ageing 12 hours, washing, in 80 DEG C of dryings 12 hours, obtain block gel.
After grinding is sieved, adopt this adsorbent absorption iodide ion in acid solution (pH=2), adsorption capacity is 370mg/g.
Use 0.01mol/L K
2cO
3the aqueous solution is according to solid-to-liquid ratio 1g:0.5L wash-out, and eluting rate is 96%; Adsorb after wash-out after washing to neutrality, the adsorption capacity again of iodide ion is 352mg/g again.
embodiment 13
By two (γ-trimethoxy-silylpropyl) amine, trialkylamine (N235), water according to volume ratio be 1:0.1:2 mixing, Keep agitation formed homogeneous gel liquid after 0.5 minute; By gained coagulant liquid ageing 12 hours, washing, in 80 DEG C of dryings 12 hours, obtain block gel.
After grinding is sieved, adopt this adsorbent absorption iodide ion in acid solution (pH=2), adsorption capacity is 367mg/g.
Use 0.01mol/L Na
2cO
3the aqueous solution is according to solid-to-liquid ratio 1g:0.5L wash-out, and eluting rate is 98%; Adsorb after wash-out after washing to neutrality, the adsorption capacity again of iodide ion is 360mg/g again.
As fully visible, compared with prior art, the adsorption capacity of organic amine iodine ion adsorbent of the present invention can reach more than 381mg/g; There is excellent adsorptive selectivity, even if there is the chlorion of 500 times of concentration in solution, still can have the iodide ion adsorption capacity of more than 278mg/g; Renovation process is simple, and the adsorbent after regeneration still can keep excellent adsorption capacity, and regeneration efficiency is up to more than 95%.
The above the specific embodiment of the present invention, does not form limiting the scope of the present invention.Any various other done by technical conceive of the present invention change and distortion accordingly, all should be included in the protection domain of the claims in the present invention.
Claims (6)
1. a preparation method for organic amine iodine ion adsorbent, is characterized in that, comprises the following steps:
By two (γ-trimethoxy-silylpropyl) amine, oil-soluble organic amine, water mixing, to form coagulant liquid, wherein two (γ-trimethoxy-silylpropyl) amine: oil-soluble organic amine: the volume ratio of water is 1:0.1-10:0.2-10; And
By the ageing of gained coagulant liquid, washing, in 40-90 DEG C of dry 3-12 hour, obtain the organic amine iodine ion adsorbent of gel bulk,
Wherein, described oil-soluble organic amine is N235, trioctylamine, methyl chloride triamine, N1923,1-heptyl octylame, two (4-methyl-2-propyl amyl group) amine, N, N-dimethyl-g yl acetamide, 1,1,3,3,5,5,7,7,9,9 ,-decamethyl decyl amine, 1-(3-ethyl pentyl group)-4-ethyl octylame, two (1-isobutyl groups-3,5-dimethylhexanyl) amine, or their any mixture.
2. preparation method according to claim 1, it is characterized in that, described preparation method also comprises the organic amine iodine ion adsorbent of grinding described gel bulk, to form pulverous organic amine iodine ion adsorbent.
3. preparation method according to claim 1 and 2, is characterized in that, the time of described mixing is 0.5-5 minute.
4. preparation method according to claim 1 and 2, is characterized in that, the time of described ageing is 2-24 hour.
5. the organic amine iodine ion adsorbent that the preparation method according to any one of claim 1-4 obtains, is characterized in that, described organic amine iodine ion adsorbent is that gel is block, graininess or Powdered.
6. organic amine iodine ion adsorbent according to claim 5 is used for iodide ion and removes and the method for iodide ion extraction, it is characterized in that, comprises and described organic amine iodine ion adsorbent is placed in acid Biodine adsorbs; And
With the Na of 0.005-0.05mol/L
2cO
3or K
2cO
3aqueous solution wash-out has adsorbed the organic amine iodine ion adsorbent of iodide ion; And be washed with water to neutrality, to obtain the organic amine iodine ion adsorbent regenerated.
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| CN105381793B (en) * | 2015-10-16 | 2018-03-20 | 中国科学院青海盐湖研究所 | Renovation process after chlorion attractive gel, its application and its adsorbing chloride ions |
| CN108620022B (en) * | 2017-03-16 | 2021-03-02 | 中国科学院宁波材料技术与工程研究所 | Iodide ion adsorbent, preparation method and application thereof |
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