CN104525161A - Polyamide amino-functionalized magnetic polymer microsphere adsorbent and method for preparing and treating uranium-containing wastewater - Google Patents
Polyamide amino-functionalized magnetic polymer microsphere adsorbent and method for preparing and treating uranium-containing wastewater Download PDFInfo
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Abstract
The invention discloses a polyamide amino-functionalized magnetic polymer microsphere adsorbent. The polyamide amino-functionalized magnetic polymer microsphere adsorbent is characterized in that a structural formula is as follows: PAMAMG3-Fe3O4/(GMA-AA-EGDMA); the polyamide amino-functionalized magnetic polymer microsphere adsorbent is prepared from the following raw materials: epoxy magnetic polymer microsphere Fe3O4/P(GMA-AA-EGDMA), ethylenediamine and methyl acrylate. A method for preparing and treating the uranium-containing wastewater comprises the following steps: (1) preparing magnetic polymer microspheres containing epoxy groups; (2) synthesizing the polyamide amino-functionalized magnetic polymer microsphere adsorbent; (3) performing an adsorption test to uranium in the uranium-containing wastewater through the magnetic polymer microsphere adsorbent. According to the polyamide amino-functionalized magnetic polymer microsphere adsorbent disclosed by the invention, the preparation route is simple and short, the operation is easy, the adsorbent has the advantages of strong adsorption capability, high adsorption capacity and quick adsorption speed, and is easily separated from an aqueous solution, can be repeatedly used and is capable of effectively adsorbing and recycling uranium ions in the aqueous solution when being used for treating the uranium-containing wastewater.
Description
Invention field
The present invention relates to a kind of method of daiamid functional magnetic polymer microballoon adsorbent and preparation and process uranium-containing waste water.
Background technology
Nuclear energy is that the world today solves energy starved important channel, but along with the fast development of nuclear industry, the uranium-bearing radioactive wastewater of generation gets more and more.Due to half-life of uranium, high radioactivity and bio-toxicity, uranium-bearing industrial wastewater has become a kind of environmental hazard thing potential for a long time.In order to reduce the harm of freeing property waste water to environment, all must be separated the uranium in the aqueous solution and enrichment.Method conventional at present has chemical precipitation method, solvent extraction, froth flotation method, liquid membrane enrichment and evaporation concentration method etc., compared with these methods, absorption method has the advantages such as the fast and capacity of source wide, with low cost, selective height, speed is large, becomes and to be separated from environment and the most effective method of enriched uranium.Researcher find dendrimers daiamid (PAMAM) owing to having natural nano-scale, relative molecular mass is controlled, end contains the features such as a large amount of nitrogen-containing functional groups were just considered to a kind of uranium high-efficiency adsorbent as far back as 2000.
Although PAMAM presents extraordinary application prospect in the separation and enrichment of uranium, but the building-up process that himself exists and complexity thereof, the defects such as in reaction separation process is very loaded down with trivial details then limit its further heavy industrialization application in nuclear industry field to a great extent.For simplifying the building-up process of PAMAM, expand its range of application in the separation and consentration of uranium, this academic thought of process that exploitation support type PAMAM is used for uranium containing water solution is just proposed and is developed.
Magnetic polymer microsphere is the class new function material that recent two decades is studied, it refer to magnetic inorganic nano corpuscle combined with organic polymer formed there is numerous characteristic of polymer microsphere and the complex microsphere of magnetic responsiveness, it not only makes its surface with specific function group (as OH by the method such as copolymerization or surface modification, COOH, CHO, NH
2with SH etc.), can also be separated rapidly under additional magnetic fields simultaneously, therefore all have a wide range of applications in fields such as wastewater treatment, medical science and biological and chemicals.
In view of this, the superpower suction-operated of quasi-step matrix daiamid of the present invention to uranium and the various features of magnetic polymer microsphere, by chemical modification means, daiamid is modified at magnetic polymer microsphere surface, with preparation, uranium is had to the magnetic polymer microsphere sorbing material of the daiamid functionalization of high efficiency of additive capability, this sorbing material has the advantage that adsorption rate is fast, adsorbance large, be easy to separation and reclaim.
Summary of the invention
For the shortcoming of prior art, low adsorbent cost prepared by the present invention, selective height, high adsorption capacity, adsorbance is large, can effectively adsorb and uranium ion in recycle-water solution.
An object of the present invention provides a kind of daiamid functional magnetic polymer microballoon adsorbent;
Two of object of the present invention there are provided a kind of preparation method of daiamid functional magnetic polymer microballoon adsorbent;
Three of object of the present invention there are provided the method adopting described daiamid functional magnetic polymer microballoon sorbent treatment uranium-containing waste water;
An object of the present invention is achieved in that
A kind of daiamid functional magnetic polymer microballoon adsorbent, its structural formula is:
PAMAMG
3-Fe
3o
4/ (GMA-AA-EGDMA), it comprises and being prepared from by following raw material: epoxy radicals magnetic polymer microsphere Fe
3o
4/ P (GMA-AA-EGDMA), ethylenediamine, methyl acrylate.
In preparation process, epoxy radicals magnetic polymer microsphere Fe
3o
4/ P (GMA-AA-EGDMA), ethylenediamine, the mass parts of methyl acrylate is: 0.1 ~ 1 part, 12 ~ 28 parts, 9 ~ 21 parts.
Epoxy radicals magnetic polymer microsphere Fe
3o
4/ P (GMA-AA-EGDMA) is prepared from by following preparation method: will add in reaction bulb after the mixing of the deionized water of the GMA of 1 ~ 5 part, the GDMA of 1 ~ 3 part, the acrylic acid of 0.5 ~ 5 part and 30 ~ 100 parts; Stir, be heated to temperature when being upgraded to 40 ~ 50 DEG C, in reaction bulb, add the Fe through ultrasonic wave dispersion of 50 ~ 100 parts
3o
4magnetic fluid, Fe
3o
4the mass fraction 5.0% ~ 10.0% of magnetic fluid, when temperature rises to 60.0 DEG C ~ 70.0 DEG C, add the aqueous solution of the potassium persulfate of 10 ~ 50 parts, the mass fraction of peroxy-disulfuric acid aqueous solutions of potassium is 0.1% ~ 1.0%, when temperature rises to 80 DEG C, Keep agitation 8h, after Magneto separate, freeze drying 12-24h, namely obtains epoxy radicals magnetic polymer microsphere Fe
3o
4/ P (GMA-AA-EGDMA).
Two of object of the present invention is achieved in that
A preparation method for daiamid functional magnetic polymer microballoon adsorbent, preparation method is as follows:
(1) get 0.1 ~ 1 part of Fe
3o
4/ P (GMA-AA-EGDMA) joins in 75 ~ 85 parts of methyl alcohol, and 25 DEG C are stirred after 1 ~ 3h, add the ethylenediamine of 3 ~ 7 parts, stir 8h, Magneto separate at 80 DEG C, and with 75 ~ 85 parts of methyl alcohol to product cleaning 3 times, namely freeze drying obtains PAMAMG
0-Fe
3o
4/ (GMA-AA-EGDMA);
(2) get 0.1 ~ 0.5 part of PAMAMG
0-Fe
3o
4/ (GMA-AA-EGDMA) joins in 75 ~ 85 parts of methyl alcohol, and 25 DEG C are stirred after 1 ~ 3h, add 3 ~ 7 parts of methyl acrylates, stir 8h, Magneto separate at 80 DEG C, with 75 ~ 85 parts of methyl alcohol to product cleaning 3 ~ 5 times,
Obtain PAMAMG
0.5-Fe
3o
4/ (GMA-AA-EGDMA);
(3) get 0.1 ~ 0.5 part of PAMAMG
0.5-Fe
3o
4/ (GMA-AA-EGDMA), joins in 75 ~ 85 parts of methyl alcohol, and 25 DEG C are stirred after 1 ~ 3h, add the ethylenediamine of 3 ~ 7 parts, stir 8h, Magneto separate at 80 DEG C, and with 75 ~ 85 parts of methyl alcohol to product cleaning 3 ~ 5 times, freeze drying obtains:
PAMAMG
1-Fe
3O
4/(GMA-AA-EGDMA)；
(4) get 0.1 ~ 0.5 part of PAMAMG
1-Fe
3o
4/ (GMA-AA-EGDMA) joins in 75 ~ 85 parts of methyl alcohol, and 25 DEG C are stirred after 1h, add 3 ~ 7 parts of methyl acrylates, at 80 DEG C, at least stir 6 ~ 8h, and after Magneto separate, with 75 ~ 85 parts of methyl alcohol to product cleaning 3 ~ 5 times, freeze drying obtains:
PAMAMG
1.5-Fe
3O
4/(GMA-AA-EGDMA)；
(5) get 0.1 ~ 0.5 part of PAMAMG
1.5-Fe
3o
4/ (GMA-AA-EGDMA), joins in 75 ~ 85 parts of methyl alcohol, and 25 DEG C are stirred after 1h, add the ethylenediamine of 3 ~ 7 parts, stir 6 ~ 8h, Magneto separate at 80 DEG C, and with 75 ~ 85 parts of methyl alcohol to product cleaning 3 ~ 5 times, freeze drying obtains:
PAMAMG
2-Fe
3O
4/(GMA-AA-EGDMA)；
(6) get 0.1 ~ 0.5 part of PAMAMG
2-Fe
3o
4/ (GMA-AA-EGDMA), joins in 75 ~ 85 parts of methyl alcohol, and 25 DEG C are stirred after 1 ~ 3h, add 3 ~ 7 parts of methyl acrylates, at 80 DEG C, stir 6 ~ 8h, after Magneto separate, with 75 ~ 85 parts of methyl alcohol to product cleaning 3 ~ 5 times, namely obtains
PAMAMG
2.5-Fe
3O
4/(GMA-AA-EGDMA)；
(7) get 0.1 ~ 0.5 part of PAMAMG
2.5-Fe
3o
4/ (GMA-AA-EGDMA), joins in 75 ~ 85 parts of methyl alcohol, and 25 DEG C are stirred after 1 ~ 3h, add the ethylenediamine of 3 ~ 7 parts, stir 8h, Magneto separate at 80 DEG C, and with 75 ~ 85 parts of methyl alcohol to product cleaning 3 ~ 5 times, freeze drying obtains:
PAMAMG
3-Fe
3O
4/(GMA-AA-EGDMA)。
Three of object of the present invention is achieved in that
Adopt the method for above-mentioned daiamid functional magnetic polymer microballoon sorbent treatment uranium-containing waste water, the pH of pending uranium-containing waste water is first regulated to be 2.5-6.0, then adsorbent is added, concussion, absorption, wherein the concentration of uranium-containing waste water is 50mg/L, the ratio of uranium-containing waste water and adsorbent is 25mL:0.0025g, adsorption temp is 5 DEG C-45 DEG C, and adsorption time is 0.5h-24h, and hunting speed is 98r/min.
The NaOH solution of the HCl solution of described adjust ph 1mol/L, the NaOH solution of 1mol/L and 5mol/L regulates pH value of solution.
Described pH preferably 5.0.
Described temperature preferably 25 DEG C, the preferred 3h of adsorption time.
Beneficial effect of the present invention
(1) the magnetic polymer microsphere sorbent preparation method of daiamid functionalization prepared of the present invention is simple and direct, easy to operate, reusable, and absorption terminates rear adsorbent also by externally-applied magnetic field in addition separation and recovery from system fast;
(2) the magnetic polymer microsphere adsorbent of daiamid functionalization prepared of the present invention is high to the adsorbance of uranium ion in aqueous solution, and adsorption rate is fast, can effectively adsorb and uranium ion in recycle-water solution.
Detailed description of the invention
The present invention is set forth further below in conjunction with specific embodiment.Technical solution of the present invention is not limited to following cited detailed description of the invention, also comprises any combination between detailed description of the invention.
Embodiment 1
To add in reaction bulb after the acrylic acid of 4.0g GMA, 2g GDMA, 0.3g and the mixing of 50g deionized water; Stir, when to be heated to temperature be 50 DEG C, in reaction bulb, add 50g Fe
3o
4magnetic fluid (Fe
3o
4the mass fraction 5.0% of magnetic fluid), when temperature rises to 70.0 DEG C, add the aqueous solution (mass fraction of peroxy-disulfuric acid aqueous solutions of potassium is 0.5%) of the potassium persulfate of 20g, when temperature rises to 80 DEG C, Keep agitation 8h, after Magneto separate, freeze drying 12-24h, namely obtains epoxy radicals magnetic polymer microsphere Fe
3o
4/ P (GMA-AA-EGDMA).
Embodiment 2
(1) get 0.5g Fe
3o
4/ P (GMA-AA-EGDMA) joins in 100mL methyl alcohol, and 25 DEG C are stirred after 1h, add 7g ethylenediamine, stir 8h, Magneto separate at 80 DEG C, and with 100mL methyl alcohol to product cleaning 3 times, namely freeze drying obtains PAMAMG
0-Fe
3o
4/ (GMA-AA-EGDMA);
(2) get 0.5g PAMAMG
0-Fe
3o
4/ (GMA-AA-EGDMA) joins in 100mL methyl alcohol, and 25 DEG C are stirred after 1h, add 7g methyl acrylate, stir 8h, Magneto separate at 80 DEG C, with 100mL methyl alcohol to product cleaning 3 times, obtains PAMAMG
0.5-Fe
3o
4/ (GMA-AA-EGDMA);
(3) get 0.5g PAMAMG
0.5-Fe
3o
4/ (GMA-AA-EGDMA), joins in 100mL methyl alcohol, and 25 DEG C are stirred after 1h, add the ethylenediamine of 7g, stir 8h, Magneto separate at 80 DEG C, and with 100mL methyl alcohol to product cleaning 3 times, freeze drying obtains PAMAMG
1-Fe
3o
4/ (GMA-AA-EGDMA);
(4) get 0.5g PAMAMG
1-Fe
3o
4/ (GMA-AA-EGDMA) joins in 100mL methyl alcohol, and 25 DEG C are stirred after 1h, add 7g methyl acrylate, at 80 DEG C, at least stir 8h, and after Magneto separate, with 100mL methyl alcohol to product cleaning 3 times, freeze drying obtains PAMAMG
1.5-Fe
3o
4/ (GMA-AA-EGDMA);
(5) get 0.5g PAMAMG
1.5-Fe
3o
4/ (GMA-AA-EGDMA), joins in 100mL methyl alcohol, and 25 DEG C are stirred after 1h, add the ethylenediamine of 7g, stir 8h, Magneto separate at 80 DEG C, and with 100mL methyl alcohol to product cleaning 3 times, freeze drying obtains PAMAMG
2-Fe
3o
4/ (GMA-AA-EGDMA);
(6) get 0.5g PAMAMG
2-Fe
3o
4/ (GMA-AA-EGDMA), joins in 100mL methyl alcohol, and 25 DEG C are stirred after 1h, add 7g methyl acrylate, at 80 DEG C, stir 8h, after Magneto separate, with 100mL methyl alcohol to product cleaning 3 times, namely obtains PAMAMG
2.5-Fe
3o
4/ (GMA-AA-EGDMA);
(7) get 0.5g PAMAMG
2.5-Fe
3o
4/ (GMA-AA-EGDMA), joins in 100mL methyl alcohol, and 25 DEG C are stirred after 1h, add 7g ethylenediamine, stir 8h, Magneto separate at 80 DEG C, and with 100mL methyl alcohol to product cleaning 3 times, freeze drying obtains PAMAMG
3-Fe
3o
4/ (GMA-AA-EGDMA).
The adsorbent prepared by embodiment 2 carries out the adsorption experiment that following examples remove uranium ion in the aqueous solution.
Embodiment 3
Accurately pipette 25mL, in the uranium standard liquid of 50mg/L and the conical flask of 150mL, solution ph is regulated to be 5.0 by the NaOH solution of the HCl solution of 1mol/L, the NaOH solution of 1mol/L and 5mol/L, add the magnetic polymer microsphere adsorbent of the daiamid functionalization of 0.0025g, at 25 DEG C, the constant temperature oscillator of 98r/min adsorbs 3h.Magneto separate, gets supernatant, measures the concentration of uranium ion in solution with Arsenazo Ⅲ Photometric Method, and convolution (1) calculates now adsorbance is 471.8mg/g.
The adsorbance of uranium ion is according to following formulae discovery:
In formula: q
e-adsorbance, mg/g; The volume of V-uranium solution, L; C
e-uranium ion solution equilibria concentration, mg/L; C
0-uranium ion initial concentration solution, mg/L; M-adsorbent mass, g.
Embodiment 4
Accurately pipette 25mL, in the uranium standard liquid of 50mg/L and the conical flask of 150mL, pH value of solution is regulated by the NaOH solution of the HCl solution of 1mol/L, the NaOH solution of 1mol/L and 5mol/L, pH value is made to be 3.5, add the magnetic polymer microsphere adsorbent of the polyamide amination of 0.0025g, at 25 DEG C, the constant temperature oscillator of 98r/min adsorbs 3h, Magneto separate, get supernatant, measure the concentration of uranium ion in solution with Arsenazo Ⅲ Photometric Method, and convolution (1) calculates now adsorbance is 230.4mg/g
Embodiment 5
Accurately pipette 25mL, in the uranium standard liquid of 50mg/L and the conical flask of 150mL, solution ph is regulated to be 5.0 by the NaOH solution of the HCl solution of 1mol/L, the NaOH solution of 1mol/L and 5mol/L, add the magnetic polymer microsphere adsorbent of the polyamide amination of 0.0025g, at 25 DEG C, the constant temperature oscillator of 98r/min inhales 6h, Magneto separate, get supernatant, measure the concentration of uranium ion in solution with Arsenazo Ⅲ Photometric Method, and combining (1), to calculate now adsorbance be 469.4mg/g.
Claims (8)
1. a daiamid functional magnetic polymer microballoon adsorbent, is characterized in that, its structural formula is:
PAMAMG
3-Fe
3o
4/ (GMA-AA-EGDMA), it comprises and being prepared from by following raw material: epoxy radicals magnetic polymer microsphere Fe
3o
4/ P (GMA-AA-EGDMA), ethylenediamine, methyl acrylate.
2. a kind of daiamid functional magnetic polymer microballoon adsorbent according to claim 1, is characterized in that, in preparation process, and epoxy radicals magnetic polymer microsphere Fe
3o
4/ P (GMA-AA-EGDMA), ethylenediamine, the mass parts of methyl acrylate is: 0.1 ~ 1 part, 12 ~ 28 parts, 9 ~ 21 parts.
3. a kind of daiamid functional magnetic polymer microballoon adsorbent according to claim 1 and 2, is characterized in that, epoxy radicals magnetic polymer microsphere Fe
3o
4/ P (GMA-AA-EGDMA) is prepared from by following preparation method: will add in reaction bulb after the mixing of the deionized water of the GMA of 1 ~ 5 part, the GDMA of 1 ~ 3 part, the acrylic acid of 0.5 ~ 5 part and 30 ~ 100 parts; Stir, be heated to temperature when being upgraded to 40 ~ 50 DEG C, in reaction bulb, add the Fe through ultrasonic wave dispersion of 50 ~ 100 parts
3o
4magnetic fluid, Fe
3o
4the mass fraction 5.0% ~ 10.0% of magnetic fluid, when temperature rises to 60.0 DEG C ~ 70.0 DEG C, add the aqueous solution of the potassium persulfate of 10 ~ 50 parts, the mass fraction of peroxy-disulfuric acid aqueous solutions of potassium is 0.1% ~ 1.0%, when temperature rises to 80 DEG C, Keep agitation 8h, after Magneto separate, freeze drying 12-24h, namely obtains epoxy radicals magnetic polymer microsphere Fe
3o
4/ P (GMA-AA-EGDMA).
4. a preparation method for daiamid functional magnetic polymer microballoon adsorbent, is characterized in that preparation method is as follows:
(1) get 0.1 ~ 1 part of Fe
3o
4/ P (GMA-AA-EGDMA) joins in 75 ~ 85 parts of methyl alcohol, and 25 DEG C are stirred after 1 ~ 3h, add the ethylenediamine of 3 ~ 7 parts, stir 8h, Magneto separate at 80 DEG C, and with 75 ~ 85 parts of methyl alcohol to product cleaning 3 times, namely freeze drying obtains PAMAMG
0-Fe
3o
4/ (GMA-AA-EGDMA);
(2) get 0.1 ~ 0.5 part of PAMAMG
0-Fe
3o
4/ (GMA-AA-EGDMA) joins in 75 ~ 85 parts of methyl alcohol, and 25 DEG C are stirred after 1 ~ 3h, add 3 ~ 7 parts of methyl acrylates, stir 8h, Magneto separate at 80 DEG C, with 75 ~ 85 parts of methyl alcohol to product cleaning 3 ~ 5 times,
Obtain PAMAMG
0.5-Fe
3o
4/ (GMA-AA-EGDMA);
(3) get 0.1 ~ 0.5 part of PAMAMG
0.5-Fe
3o
4/ (GMA-AA-EGDMA), joins in 75 ~ 85 parts of methyl alcohol, and 25 DEG C are stirred after 1 ~ 3h, add the ethylenediamine of 3 ~ 7 parts, stir 8h, Magneto separate at 80 DEG C, and with 75 ~ 85 parts of methyl alcohol to product cleaning 3 ~ 5 times, freeze drying obtains:
PAMAMG
1-Fe
3O
4/(GMA-AA-EGDMA)；
(4) get 0.1 ~ 0.5 part of PAMAMG
1-Fe
3o
4/ (GMA-AA-EGDMA) joins in 75 ~ 85 parts of methyl alcohol, and 25 DEG C are stirred after 1h, add 3 ~ 7 parts of methyl acrylates, at 80 DEG C, at least stir 6 ~ 8h, and after Magneto separate, with 75 ~ 85 parts of methyl alcohol to product cleaning 3 ~ 5 times, freeze drying obtains:
PAMAMG
1.5-Fe
3O
4/(GMA-AA-EGDMA)；
(5) get 0.1 ~ 0.5 part of PAMAMG
1.5-Fe
3o
4/ (GMA-AA-EGDMA), joins in 75 ~ 85 parts of methyl alcohol, and 25 DEG C are stirred after 1h, add the ethylenediamine of 3 ~ 7 parts, stir 6 ~ 8h, Magneto separate at 80 DEG C, and with 75 ~ 85 parts of methyl alcohol to product cleaning 3 ~ 5 times, freeze drying obtains:
PAMAMG
2-Fe
3O
4/(GMA-AA-EGDMA)；
(6) get 0.1 ~ 0.5 part of PAMAMG
2-Fe
3o
4/ (GMA-AA-EGDMA), joins in 75 ~ 85 parts of methyl alcohol, and 25 DEG C are stirred after 1 ~ 3h, add 3 ~ 7 parts of methyl acrylates, at 80 DEG C, stir 6 ~ 8h, after Magneto separate, with 75 ~ 85 parts of methyl alcohol to product cleaning 3 ~ 5 times, namely obtains
PAMAMG
2.5-Fe
3O
4/(GMA-AA-EGDMA)；
(7) get 0.1 ~ 0.5 part of PAMAMG
2.5-Fe
3o
4/ (GMA-AA-EGDMA), joins in 75 ~ 85 parts of methyl alcohol, and 25 DEG C are stirred after 1 ~ 3h, add the ethylenediamine of 3 ~ 7 parts, stir 8h, Magneto separate at 80 DEG C, and with 75 ~ 85 parts of methyl alcohol to product cleaning 3 ~ 5 times, freeze drying obtains:
PAMAMG
3-Fe
3O
4/(GMA-AA-EGDMA)。
5. adopt the method for the daiamid functional magnetic polymer microballoon sorbent treatment uranium-containing waste water described in above-mentioned arbitrary claims, it is characterized in that, the pH first regulating pending uranium-containing waste water is 2.5-6.0, then adds adsorbent, concussion, absorption, wherein the concentration of uranium-containing waste water is 50mg/L, and the ratio of uranium-containing waste water and adsorbent is 25mL:0.0025g, and adsorption temp is 5 DEG C-45 DEG C, adsorption time is 0.5h-24h, and hunting speed is 98r/min.
6. the method for process uranium-containing waste water according to claim 5, is characterized in that, the NaOH solution of the HCl solution of described adjust ph 1mol/L, the NaOH solution of 1mol/L and 5mol/L regulates pH value of solution.
7. the method for process uranium-containing waste water according to claim 5, is characterized in that, described pH preferably 5.0.
8. the method for process uranium-containing waste water according to claim 5, is characterized in that, described temperature preferably 25 DEG C, the preferred 3h of adsorption time.
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| CN106824124A (en) * | 2016-11-28 | 2017-06-13 | 东华理工大学 | A kind of method of nitrogenous porous polymer chelating resin and preparation and treatment uranium-containing waste water |
| CN108525648A (en) * | 2018-04-09 | 2018-09-14 | 东华理工大学 | A kind of method of amination magnetism poly phosphazene adsorbent and preparation and separation and enriched uranium |
| CN108704621A (en) * | 2018-06-05 | 2018-10-26 | 东华理工大学 | A kind of amidoxime group core-shell structure magnetic poly phosphazene nanoparticle and its preparation and the application as uranium absorption agent |
| WO2019019247A1 (en) * | 2017-07-27 | 2019-01-31 | 苏州大学 | Ligand-containing conjugated microporous polymer and application thereof |
| CN112967828A (en) * | 2021-02-01 | 2021-06-15 | 南华大学 | Uranium-containing wastewater treatment device and uranium-containing wastewater treatment method |
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