CN114749153A - Preparation of tritiated water and tritium gas adsorption material - Google Patents
Preparation of tritiated water and tritium gas adsorption material Download PDFInfo
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- CN114749153A CN114749153A CN202210421810.9A CN202210421810A CN114749153A CN 114749153 A CN114749153 A CN 114749153A CN 202210421810 A CN202210421810 A CN 202210421810A CN 114749153 A CN114749153 A CN 114749153A
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- YZCKVEUIGOORGS-NJFSPNSNSA-N Tritium Chemical compound [3H] YZCKVEUIGOORGS-NJFSPNSNSA-N 0.000 title claims abstract description 46
- 229910052722 tritium Inorganic materials 0.000 title claims abstract description 46
- 239000000463 material Substances 0.000 title claims abstract description 42
- XLYOFNOQVPJJNP-PWCQTSIFSA-N Tritiated water Chemical compound [3H]O[3H] XLYOFNOQVPJJNP-PWCQTSIFSA-N 0.000 title claims abstract description 39
- 238000001179 sorption measurement Methods 0.000 title claims abstract description 36
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 239000007789 gas Substances 0.000 claims abstract description 43
- 239000000017 hydrogel Substances 0.000 claims abstract description 33
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 27
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 21
- 239000000243 solution Substances 0.000 claims abstract description 19
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000003756 stirring Methods 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000007789 sealing Methods 0.000 claims abstract description 10
- 238000004108 freeze drying Methods 0.000 claims abstract description 8
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000000227 grinding Methods 0.000 claims abstract description 7
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 7
- 239000007864 aqueous solution Substances 0.000 claims abstract description 5
- 238000004140 cleaning Methods 0.000 claims abstract description 3
- 230000001678 irradiating effect Effects 0.000 claims abstract description 3
- 239000000843 powder Substances 0.000 claims abstract description 3
- 239000002356 single layer Substances 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 14
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 8
- 230000000694 effects Effects 0.000 abstract description 7
- 239000010410 layer Substances 0.000 description 9
- 238000001914 filtration Methods 0.000 description 8
- 238000011049 filling Methods 0.000 description 7
- 239000004570 mortar (masonry) Substances 0.000 description 6
- 239000004745 nonwoven fabric Substances 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 239000012153 distilled water Substances 0.000 description 5
- 239000002808 molecular sieve Substances 0.000 description 5
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 5
- 238000003860 storage Methods 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 239000000741 silica gel Substances 0.000 description 4
- 229910002027 silica gel Inorganic materials 0.000 description 4
- 239000000499 gel Substances 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 208000002250 Hematologic Neoplasms Diseases 0.000 description 1
- 230000000274 adsorptive effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000037406 food intake Effects 0.000 description 1
- 230000009033 hematopoietic malignancy Effects 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 230000003211 malignant effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 210000004379 membrane Anatomy 0.000 description 1
- 210000004224 pleura Anatomy 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000002901 radioactive waste Substances 0.000 description 1
- 230000037384 skin absorption Effects 0.000 description 1
- 231100000274 skin absorption Toxicity 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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
- B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
-
- 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
- B01J20/28047—Gels
-
- 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
- B01J20/3085—Chemical treatments not covered by groups B01J20/3007 - B01J20/3078
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
- G21F9/02—Treating gases
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
- G21F9/04—Treating liquids
- G21F9/06—Processing
- G21F9/12—Processing by absorption; by adsorption; by ion-exchange
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- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Inorganic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention discloses a preparation method of tritiated water and tritium gas adsorption materials, which comprises the following steps: s1, dissolving acrylamide powder in water, adding a single-layer graphene oxide aqueous solution, stirring, introducing nitrogen into the solution after the solution is uniform, stable and not layered obviously, and then sealing the container; s2, irradiating the sealed container to enable the solution to be gelatinized so as to obtain hydrogel; and S3, cleaning the hydrogel, placing the hydrogel in a low-temperature vacuum drier for freeze drying, and grinding and crushing to obtain a granular hydrogel material, namely the tritiated water and tritium gas adsorption material. The tritiated water and tritium gas adsorption material disclosed by the invention has a good adsorption effect on both tritiated water and tritium gas, the protection time is longer, and the tolerance of a user is better.
Description
Technical Field
The invention relates to the technical field of tritium adsorption materials, in particular to a preparation method of tritiated water and tritium adsorption materials.
Background
During the operation of the nuclear power plant, tritiated water, tritium gas and other radioactive wastes containing tritium are generated. Tritium is one of the isotopes of hydrogen, a very harmful radionuclide. Tritium can enter the body through skin absorption, inhalation of contaminated water vapor, ingestion of contaminated food or water, and the like. Moreover, tritium readily enters the pleura and buccal membranes after inhalation. Prolonged tritium uptake may lead to the development of hematopoietic malignancies and other malignant diseases. Protection against tritium is therefore becoming increasingly important.
Tritiated water and tritium gas mainly enter a human body in an inhalation mode and generate a damage effect, so that protection of the tritiated water and the tritiated gas in the nuclear power station is mainly achieved by inhalation protection. By using a proper gas mask and a proper filtering material, the amount of tritiated water and tritium gas entering a human body can be greatly reduced, and the damage effect of the tritiated water and the tritium gas on the human body can also be greatly reduced.
Selection of an appropriate tritium-adsorbing material is critical to enhancing the inhalation protection capabilities of the respirator. Currently commonly used tritium-adsorbing materials are inorganic materials such as molecular sieves. The method comprises the following steps of crushing a molecular sieve, granulating, uniformly filling into a canister, sealing with a breathable material, screwing the canister into a gas mask when in use, and adsorbing tritiated water in the environment by a user through the canister to achieve the effect of preventing the tritiated water. However, the air filtered through the molecular sieve is very dry and cannot be tolerated by the user for a long time, and the molecular sieve has a limited amount of tritiated water adsorbed, so that the use time is about 1.5 to 2 hours. In addition, molecular sieves do not have an adsorptive effect on tritium gas and therefore do not have a protective effect on it.
Therefore, it is highly desirable to provide an adsorbing material having a good adsorbing effect on both tritiated water and tritium gas.
Disclosure of Invention
The invention aims to solve the defects of short protection time and poor use comfort of the existing adsorption protection material, and provides a tritiated water and tritium gas adsorption material which has a good adsorption effect on both tritiated water and tritium gas, is longer in protection time and better in tolerance of a user.
The invention provides a preparation method of tritiated water and tritium gas adsorption materials, which comprises the following steps:
s1, dissolving acrylamide powder in water, adding a single-layer graphene oxide aqueous solution, stirring, introducing nitrogen into the solution after the solution is uniform, stable and not layered obviously, and then sealing the container;
s2, irradiating the sealed container to enable the solution to be gelatinized so as to obtain hydrogel;
and S3, cleaning the hydrogel, placing the hydrogel in a low-temperature vacuum drier for freeze drying, and grinding and crushing to obtain a granular hydrogel material, namely the tritiated water and tritium gas adsorption material.
The tritiated water and tritiated gas adsorption material prepared by the invention is graphene oxide grafted acrylamide hydrogel, wherein graphene oxide plays a supporting role on one hand, and the high-hardness lamellar graphene oxide can support the three-dimensional structure of the hydrogel, so that the structure is stronger, and the tritiated water adsorption performance is better improved; on the other hand, the graphene oxide also has the capacity of absorbing tritium gas, and the tritium removal capacity of the material can be improved.
Further, in step S1, the concentration of graphene oxide in the solution is 0.1-1 g/L. More preferably, the graphene oxide concentration in the solution is 0.5 g/L.
Further, in step S1, the stirring time is 5 to 30 minutes. More preferably, the stirring time is 10 minutes.
Further, in step S1, the flow rate of the nitrogen gas is 1-5L/min, and the time is 30-60 minutes. More preferably, the flow rate of nitrogen is 2L/min for 40 minutes.
Further, in step S1, the mixture is stirred and then allowed to stand, and then absolute ethyl alcohol is added while stirring, and stirring is continued for 5 to 10 minutes after all the absolute ethyl alcohol is added. And adding absolute ethyl alcohol, and finally obtaining the reduced graphene oxide grafted acrylamide hydrogel. Preferably, stirring is continued for a further 10 minutes after the entire addition.
Further, in step S2, the hydrogel has a particle size of 0.5 to 1 cm. Preferably, the particle size of the gel is less than 0.5 cm.
Further, in step S2, the irradiation specifically includes: the sealed container was sent to a 60Co irradiation chamber for irradiation.
Further, in step S2, the total dose of irradiation is 25 to 50KeV,the irradiation dose rate is 1.5-2.5 kGy.h-1And the irradiation time is 2-5 days. Preferably, the total dose of irradiation is 30KeV, and the irradiation dose rate is 1.85 kGy.h -1The irradiation time was 3 days.
Further, in step S3, the freeze-drying time is 48 to 72 hours. Preferably, the time for freeze-drying is 72 h.
Further, in step S3, after the hydrogel material is ground and crushed, the particle size of the hydrogel material is 0.1-0.5 cm.
The invention also provides tritiated water and a tritium gas adsorption material prepared by the method.
Compared with the prior art, the technical scheme of the invention has the following advantages:
1. compared with the traditional inorganic adsorption material, the tritium filtering adsorption material has good adsorption effect on tritiated water and tritium gas, has longer protection time and better tolerance for users, practically meets the urgent requirement of tritium protection of one-line tritium-involved personnel of a nuclear power station, and effectively reduces the inhalation of the tritiated water and the tritium gas by the working personnel under the tritium-involved scene of the nuclear power station, thereby achieving the purpose of reducing the damage of the tritium to organisms.
2. The tritiated water and tritiated gas adsorption material can be prepared by a radiation one-step method, the reaction conditions are simple and convenient, and the mass production is easy.
Detailed Description
The present invention is further described below with reference to specific examples so that those skilled in the art can better understand the present invention and can practice the present invention, but the examples are not intended to limit the present invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The experimental methods used in the following examples are conventional methods unless otherwise specified, and materials, reagents and the like used therein are commercially available without otherwise specified.
Example 1
The embodiment provides a graphene hydrogel material for tritiated water and tritium adsorption, and the preparation method comprises the following steps:
(1) adding 20g of acrylamide into 20ml of distilled water, and fully dissolving; 180ml of graphene oxide aqueous solution (the concentration of graphene oxide is 0.5g/L) is added, and the mixture is fully stirred for 10 minutes on a stirrer until the solution is uniformly mixed. Nitrogen was passed through the solution at a flow rate of 2L/min for 40 min. And then sealing the container by using a sealing film, smearing silica gel on the bottle mouth, covering and actually sealing.
(2) Placing the special irradiation reaction bottle filled with the solution vertically, and feeding the special irradiation reaction bottle into a 60Co irradiation chamber for irradiation, wherein the total irradiation dose is 30KeV, and the irradiation dose rate is 1.85 kGy.h -1. The irradiation process was continued for three days.
(3) Taking out the obtained hydrogel from container, wiping water with filter paper, cutting into small pieces of about 2cm, placing into open container, placing into freeze dryer, and freeze drying for 72 h. The obtained product can be temporarily placed into a drier filled with anhydrous silica gel for storage.
Example 2
The embodiment provides a canister of a tritium-filtering gas mask, which comprises the following specific preparation method:
(1) the surface of a mortar was washed with distilled water and absolute ethanol, dried, and 200g of the dried graphene hydrogel prepared in example 1 was added to the mortar, and crushed and ground gently, with the particle size being less than 0.5cm as a standard for sufficient grinding. The ground, dried hydrogel was transferred to a desiccator for temporary storage.
(2) Preparing a canister shell with standard size, filling 2 layers of non-woven fabrics and an activated carbon layer with the thickness of 1.5mm into the bottom of the canister shell, uniformly filling the synthesized dry hydrogel into the canister shell, covering a layer of non-woven fabrics on the canister shell, and screwing in a one-way vent valve to obtain the tritium filtering gas mask canister which can be practically used.
Example 3
The embodiment provides a graphene hydrogel material for tritiated water and tritium adsorption, and the preparation method comprises the following steps:
(1) adding 20g of acrylamide into 60ml of distilled water, and fully dissolving; adding 120ml of graphene oxide aqueous solution (the concentration of the graphene oxide is 0.5g/L), fully stirring for 10 minutes on a stirrer until the solution is uniformly mixed, adding 20ml of absolute ethyl alcohol while stirring, and stirring for ten minutes until the solution is uniformly mixed. Nitrogen was passed through the solution at a flow rate of 2L/min for 40 min. And then sealing the container by using a sealing film, smearing silica gel on the bottle mouth, covering and actually sealing.
(2) Vertically placing the special irradiation reaction bottle filled with the solution, and feeding the special irradiation reaction bottle into a 60Co irradiation chamber for irradiation, wherein the total irradiation dose is 30KeV, and the irradiation dose rate is 1.85 kGy.h-1. The irradiation process was continued for three days.
(3) Taking out the obtained hydrogel from container, wiping water with filter paper, cutting into small pieces of about 2cm, placing into open container, placing into freeze dryer, and freeze drying for 72 h. The obtained product can be temporarily placed into a drier filled with anhydrous silica gel for storage.
Example 4
The embodiment provides a canister of a tritium-filtering gas mask, which comprises the following specific preparation method:
(1) the surface of a mortar was washed with distilled water and absolute ethanol, dried, and 200g of the dried graphene hydrogel prepared in example 3 was added to the mortar, and crushed and ground gently, and the particle size was less than 0.5cm as a standard for sufficient grinding. The ground, dried hydrogel was transferred to a desiccator for temporary storage.
(2) Preparing a canister shell with standard size, filling 2 layers of non-woven fabrics and an activated carbon layer with the thickness of 1.5mm at the bottom, uniformly filling the synthesized dry hydrogel into the canister shell, covering a layer of non-woven fabrics on the canister shell, and screwing in a one-way vent valve to obtain the tritium filtering gas mask canister which can be practically used.
The canister of the embodiment has strong tritium adsorption capacity to the environment, and is suitable for the situation of large concentration of tritium in the environment.
Example 5
The embodiment provides a canister of a tritium-filtering gas mask, which comprises the following specific preparation method:
(1) washing the surface of the mortar by using distilled water and absolute ethyl alcohol, and drying. 100g of the graphene oxide lyophilized hydrogel prepared in example 1 and 100g of the reduced graphene oxide lyophilized hydrogel prepared in example 3 were added to a mortar. Pulverizing and grinding the two gels together until the two gels are completely mixed and the particle size meets the standard. A criterion for adequate grinding is a particle size of less than 0.5 cm. The ground dried hydrogel was transferred to a desiccator for temporary storage.
(2) Preparing a canister shell with standard size, filling 2 layers of non-woven fabrics and an activated carbon layer with the thickness of 1.5mm into the bottom of the canister shell, uniformly filling the synthesized dry hydrogel into the canister shell, covering a layer of non-woven fabrics on the canister shell, and screwing in a one-way vent valve to obtain the tritium filtering gas mask canister which can be practically used.
The canister of this embodiment has stronger adsorption efficiency to tritium gas and tritium water in the environment, and adsorption efficiency is comparatively balanced, is applicable to the circumstances of tritium gas and tritium water coexistence in the environment.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Various other modifications and alterations will occur to those skilled in the art upon reading the foregoing description. This need not be, nor should it be exhaustive of all embodiments. And obvious variations or modifications derived therefrom are intended to be within the scope of the invention.
Claims (10)
1. A preparation method of tritiated water and tritium gas adsorption materials is characterized by comprising the following steps:
s1, dissolving acrylamide powder in water, adding a single-layer graphene oxide aqueous solution, stirring, introducing nitrogen into the solution after the solution is uniform, stable and not layered obviously, and then sealing the container;
s2, irradiating the sealed container to enable the solution to be gelatinized so as to obtain hydrogel;
and S3, cleaning the hydrogel, placing the hydrogel in a low-temperature vacuum drier for freeze drying, and grinding and crushing to obtain a granular hydrogel material, namely the tritiated water and tritium gas adsorption material.
2. A method for preparing a tritiated water and tritiated gas adsorption material according to claim 1, wherein in step S1, the graphene oxide concentration in the solution is 0.1-1 g/L.
3. A method for preparing a tritiated water and tritiated gas adsorption material according to claim 1, characterized in that in step S1, stirring time is 5-30 minutes.
4. A method for preparing a tritiated water and tritiated gas adsorption material according to claim 3, characterized in that in step S1, nitrogen is introduced at a flow rate of 1-5L/min for 30-60 minutes.
5. A method for preparing a tritiated water and tritiated gas adsorption material according to claim 1, characterized in that in step S1, stirring and standing are performed, then absolute ethyl alcohol is added while stirring, and after all the absolute ethyl alcohol is added, stirring is continued for 5-10 minutes.
6. A method for preparing a tritiated water and tritiated gas adsorption material according to claim 1, which comprises a tank, and is characterized in that in step S2, the irradiation is specifically: the sealed container was sent to a 60Co irradiation chamber for irradiation.
7. A method for preparing tritiated water and tritiated gas adsorption material according to claim 1, wherein in step S2, the total irradiation dose is 25 to 50KeV, and the irradiation dose rate is 1.5 to 2.5 kGy.h-1And the irradiation time is 2-5 days.
8. A method for preparing a tritiated water and tritium gas adsorption material according to claim 1, wherein in step S3, the freeze-drying time is 48-72 h.
9. A method for preparing a tritiated water and tritiated gas adsorption material according to claim 1, characterized in that in step S3, the particle size of the hydrogel material is 0.1-0.5 cm.
10. A tritiated water and tritiated gas adsorption material prepared by the method of any one of claims 1 to 9.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004041889A (en) * | 2002-07-10 | 2004-02-12 | Tomita Pharmaceutical Co Ltd | Fluorine adsorbent and method of treating fluorine in water |
| CN105418859A (en) * | 2015-12-14 | 2016-03-23 | 苏州大学张家港工业技术研究院 | Carbon nano tube compounded hydrogel for tritium prevention and filtration and preparation method thereof |
| CN209423336U (en) * | 2018-11-29 | 2019-09-24 | 中广核久源（成都）科技有限公司 | It is a kind of for removing the catalytic unit of tritium gas and tritium isotope |
| CN111879793A (en) * | 2020-06-15 | 2020-11-03 | 中国原子能科学研究院 | Tritium gas adsorption performance experimental device and method thereof |
| CN215025444U (en) * | 2021-04-19 | 2021-12-07 | 苏州大学 | Tritium filtering gas mask canister |
-
2022
- 2022-04-21 CN CN202210421810.9A patent/CN114749153A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004041889A (en) * | 2002-07-10 | 2004-02-12 | Tomita Pharmaceutical Co Ltd | Fluorine adsorbent and method of treating fluorine in water |
| CN105418859A (en) * | 2015-12-14 | 2016-03-23 | 苏州大学张家港工业技术研究院 | Carbon nano tube compounded hydrogel for tritium prevention and filtration and preparation method thereof |
| CN209423336U (en) * | 2018-11-29 | 2019-09-24 | 中广核久源（成都）科技有限公司 | It is a kind of for removing the catalytic unit of tritium gas and tritium isotope |
| CN111879793A (en) * | 2020-06-15 | 2020-11-03 | 中国原子能科学研究院 | Tritium gas adsorption performance experimental device and method thereof |
| CN215025444U (en) * | 2021-04-19 | 2021-12-07 | 苏州大学 | Tritium filtering gas mask canister |
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| Title |
|---|
| MUYUAN YOU ET AL.: "One-step irradiation assisted fabrication of RGO/PAM hydrogel for air detritiation", RADIATION PHYSICS AND CHEMISTRY * |
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Application publication date: 20220715 |