CN114367290A - Preparation and application method of radioactive decontamination strippable membrane thermosensitive degradation catalyst - Google Patents
Preparation and application method of radioactive decontamination strippable membrane thermosensitive degradation catalyst Download PDFInfo
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- CN114367290A CN114367290A CN202111634587.8A CN202111634587A CN114367290A CN 114367290 A CN114367290 A CN 114367290A CN 202111634587 A CN202111634587 A CN 202111634587A CN 114367290 A CN114367290 A CN 114367290A
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- 238000005202 decontamination Methods 0.000 title claims abstract description 46
- 230000003588 decontaminative effect Effects 0.000 title claims abstract description 43
- 238000006731 degradation reaction Methods 0.000 title claims abstract description 38
- 230000015556 catabolic process Effects 0.000 title claims abstract description 37
- 230000002285 radioactive effect Effects 0.000 title claims abstract description 37
- 239000003054 catalyst Substances 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000012528 membrane Substances 0.000 title claims abstract description 13
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000003756 stirring Methods 0.000 claims abstract description 19
- 239000008367 deionised water Substances 0.000 claims abstract description 18
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 18
- 238000001035 drying Methods 0.000 claims abstract description 18
- 239000002244 precipitate Substances 0.000 claims abstract description 11
- 239000000243 solution Substances 0.000 claims abstract description 11
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims abstract description 10
- DHEQXMRUPNDRPG-UHFFFAOYSA-N strontium nitrate Inorganic materials [Sr+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O DHEQXMRUPNDRPG-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000005406 washing Methods 0.000 claims abstract description 9
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims abstract description 6
- 235000011114 ammonium hydroxide Nutrition 0.000 claims abstract description 6
- 238000000137 annealing Methods 0.000 claims abstract description 6
- 238000001816 cooling Methods 0.000 claims abstract description 6
- 239000012153 distilled water Substances 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims abstract description 6
- 239000011259 mixed solution Substances 0.000 claims abstract description 6
- 239000002994 raw material Substances 0.000 claims abstract description 3
- 238000007664 blowing Methods 0.000 claims description 2
- 238000005303 weighing Methods 0.000 claims description 2
- 239000000047 product Substances 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 238000000643 oven drying Methods 0.000 abstract 1
- 238000010298 pulverizing process Methods 0.000 abstract 1
- 239000002699 waste material Substances 0.000 description 12
- 238000005516 engineering process Methods 0.000 description 8
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 5
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 description 5
- 239000013585 weight reducing agent Substances 0.000 description 5
- 239000003344 environmental pollutant Substances 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000001782 photodegradation Methods 0.000 description 4
- 231100000719 pollutant Toxicity 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 238000005485 electric heating Methods 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 238000006065 biodegradation reaction Methods 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000007123 defense Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229920002521 macromolecule Polymers 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000013033 photocatalytic degradation reaction Methods 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000002901 radioactive waste Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229920001059 synthetic polymer Polymers 0.000 description 2
- 229910001868 water Inorganic materials 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000002361 compost Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 230000005923 long-lasting effect Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 238000010525 oxidative degradation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000011941 photocatalyst Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920013716 polyethylene resin Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000005180 public health Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- 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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/84—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/843—Arsenic, antimony or bismuth
- B01J23/8437—Bismuth
-
- 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
- G21F9/28—Treating solids
- G21F9/30—Processing
- G21F9/301—Processing by fixation in stable solid media
- G21F9/307—Processing by fixation in stable solid media in polymeric matrix, e.g. resins, tars
Abstract
The invention discloses a preparation and application method of a radioactive decontamination strippable membrane thermosensitive degradation catalyst, which comprises 40-50 parts by weight of Bi (NO)3)320-25 parts of Sr (NO)3)2Dissolving in deionized water; 15 to 20 portions of H2C2O4Dissolving in deionized water; stirring at 1000r/min in Bi (NO)3)3、Sr(NO3)2Dropwise adding H into the mixed solution2C2O4Stirring the solution for 10 hours, and then adjusting the pH value to 7 by using ammonia water; adding 20-25 parts of Fe2O3Stirring continuously, and washing precipitates obtained after reaction for 3 hours with distilled water for 5 times; drying in a drying oven at 80 ℃, crushing to 60 meshes, heating to 750 ℃ at a speed of 10 ℃/min in a muffle furnace, preserving heat for 720 min, and then annealing and cooling; washing with deionized water, oven drying at 40 deg.C, and pulverizing to 100 mesh. Before using, the product is in a range of 3%. E8 percent of the raw materials are added and uniformly stirred, and are peeled off after being used, and are naturally stockpiled for 20-30 days, and the degradation rate is more than or equal to 90 percent.
Description
Technical Field
The invention relates to a preparation method and application of a radioactive decontamination strippable membrane thermosensitive degradation catalyst, which is Bi (NO)3)3、Sr(NO3)2、Fe2O3、H2C2O4A compound formed by (oxalic acid) and application thereof, belonging to the technical field of radioactive three wastes treatment and disposal in the technical field of nuclear science.
Background
Since the 80 s in the 20 th century, along with the retirement of a large number of nuclear facilities and the treatment of radioactive wastes at home and abroad, the surface decontamination technology of strippable decontamination films is developed and formed. The strippable dirt film is used for decontamination, the decontaminating agent is sprayed or brushed on the surface of a nuclear facility matrix, loose pollutants or certain semi-solid pollutants on the surface of the matrix can be enriched on the film through adhesive force and cohesive force in the drying and film forming process of the decontaminating agent, a layer of film can be formed on the surface of the facility matrix after the film liquid is dried, and then the dirt film is stripped, so that the purposes of decontamination, sealing and fixing the pollutants are achieved. Compared with other decontamination methods, the strippable film does not generate waste liquid in the decontamination process, is simple and convenient to spray, is easy to strip and recover from the surface, has low cost and can be mechanically operated in a large area.
At present, the peelable decontamination film matrix material is mainly polyacrylic resin, polyethylene resin (such as polyvinyl alcohol and polyvinyl acetate), polyurethane, cellulose and the like. The large amount of wastes which are generated after use and are difficult to naturally decompose become new pollution sources and even cause serious secondary pollution. In practical application of the strippable dirty film surface decontamination technology, the dry film thickness of the strippable dirty film is at least 50 micrometers so as to ensure the strippability and the protective performance of the strippable dirty film, 35-50 t of strippable dirty film waste is generated in the surface decontamination process of 1 square kilometer in terms of 35-50 g of usage amount per square meter, and the strippable dirty film waste with various pollutants generated in the process brings huge threats and hazards to the peripheral public health and the natural environment. Although a plurality of efficient and rapid decontamination film volume reduction and weight reduction methods including physical, chemical, biological and other treatment methods are explored at home and abroad, the problems of high cost, serious secondary pollution and the like still exist.
At present, the mature degradation of synthesized macromolecules such as strippable fouling films is a photocatalytic degradation technology, and the mechanism is that electrons on a valence band of a photocatalyst are larger than a forbidden band thereofWhen the light irradiation with the width energy is carried out, the light is excited to jump to the conduction band, corresponding holes are left on the valence band, the generated electron-hole pair generally has the service life of picosecond level, the photoproduction electron and the photoproduction hole pair can transfer charges to substances from solution or gas phase adsorbed on the surface of the photodegradation catalyst through forbidden bands, negatively charged electrons and positively charged holes are generated, and oxygen adsorbed on the surface of the photodegradation catalyst is trapped by electrons to form O2−While the holes will adsorb on the catalyst surface to make OH-And H2O is oxidized to HO, O2-HO, oxidative stripping of the fouling film, etc., to break the C-C bond of the synthetic polymer, ultimately achieving degradation. However, in the case where sunlight cannot be directly irradiated, such as a large amount of synthetic polymer wastes in refuse landfills, compost fields, mulching film soil-burying parts, etc., the photocatalytic degradation technology is greatly limited. How to screen different types of novel degradation catalysts, develop products with high utilization rate of catalytic factors such as ambient light, temperature, water, gas, biology and the like, meet the use requirements, have long lasting effect, are controllable and have low price, are a development direction of degrading synthetic macromolecules such as strippable fouling films and the like in future, and the research and development technical achievements of the products have important application prospects and significance for sustainable development of nuclear power, national defense military industry and nuclear science technology.
Disclosure of Invention
The invention aims to provide a preparation and application method of a radioactive decontamination strippable membrane thermosensitive degradation catalyst, which provides a technical method for treating and disposing surface decontamination by radioactive three wastes in the technical field of nuclear science, wherein the preparation method is simple, the cost is low, the application is convenient, the catalyst is suitable for degradation treatment of various radioactive decontamination strippable membranes, and the technical method can achieve rapid volume reduction, weight reduction and minimum treatment after use.
The technical scheme of the invention is as follows:
a preparation method of a radioactive decontamination peelable film heat-sensitive degradation catalyst is characterized by sequentially comprising the following steps:
A. preparing raw materials: weighing the following components in parts by weight: 340-50 parts of Bi (NO 3); 220-25 parts of Sr (NO 3); 320-25 parts of Fe 2O; 415-20 parts of H2C2O for later use;
B. dissolving Bi (NO3)3 and Sr (NO3)2 into 2000 parts of deionized water;
C. dissolving H2C2O4 into 500 parts of deionized water;
D. dropwise adding H2C2O4 solution into the mixed solution of Bi (NO3)3 and Sr (NO3)2 under the stirring condition of 1000r/min, stirring for 10H, and adjusting the pH of the solution to 7 by using ammonia water;
E. adding Fe2O3, stirring continuously, reacting for 3h to obtain a red-gray precipitate, and washing with distilled water for 5 times;
F. drying the cleaned precipitate in an electrothermal blowing drying oven at 80 ℃, crushing to 60 meshes, heating to 750 ℃ at a speed of 10 ℃/min in a muffle furnace, preserving heat for 720 min, and then annealing and cooling;
G. washing with deionized water, drying in a 40 ℃ oven, and crushing to 100 meshes to obtain the radioactive decontamination strippable membrane degradation catalyst.
The application method of the radioactive decontamination peelable film heat-sensitive degradation catalyst according to claim 1 comprises the steps of adding 3-5% of the radioactive decontamination peelable film by weight percent before use, uniformly stirring, peeling after use, naturally storing for 20-30 days, and enabling the degradation rate to be more than or equal to 90%.
The application method of the radioactive decontamination peelable film heat-sensitive degradation catalyst according to claim 1 is that the radioactive decontamination peelable film is added and uniformly mixed according to the weight percentage of 6-8% after being peeled off, and is naturally stored for 20-30 days, and the degradation rate is more than or equal to 90%.
Synthetic high molecular polymers such as radioactive decontamination strippable films provide safety and technical guarantee for the sustainable development of nuclear power, national defense and military industry and nuclear science technology, and simultaneously generate great potential hidden dangers, and a large amount of radioactive decontamination strippable film wastes which are difficult to naturally decompose become new pollution sources and even cause serious secondary pollution. Under the background of various problems existing in photodegradation, biodegradation, photo/biodegradation and thermal-oxidative degradation polymer technologies, how to develop a strippable fouling film waste degradation process with low cost, capability of meeting use requirements, rapid volume reduction and weight reduction, minimized pollution and even zero harm becomes one of the key technologies for surface decontamination in the future radioactive three wastes treatment and disposal. According to the invention, the negative temperature coefficient thermal-sensitive catalytic effect is utilized, namely, in a normal temperature environment of 20-40 ℃, the thermal-sensitive degradation catalyst can effectively catalyze and generate free radicals for strippable membrane degradation, and the polymerized polymer chain is cut off to realize thermal-catalytic controllable degradation. The invention has the innovation that the thermosensitive catalyst has low consumption, low cost and easy processing, meets the use requirement, and the used radioactive decontamination strippable membrane waste can be quickly subjected to volume reduction, weight reduction and degradation in a normal-temperature hot environment within a set time range and realizes the minimum treatment and disposal of the radioactive waste. The thermosensitive degradation catalyst prepared by the invention can also be used in the degradation treatment of volume reduction and weight reduction of synthetic high polymer material wastes such as polyethylene, polypropylene, polystyrene, polyurethane, polyamide and the like.
Detailed Description
The present invention will be described in further detail with reference to examples.
Example 1: taking Bi (NO) according to the weight portion3)345 portions of Sr (NO)3)220 parts of Fe2O325 portions of H2C2O415 parts of (1); in the first step, Bi (NO)3)3、Sr(NO3)2Dissolving in 2000 parts of deionized water; the second step is to mix H2C2O4Dissolving into 500 parts of deionized water; the third step is to stir the mixture at 1000r/min in Bi (NO)3)3、Sr(NO3)2Dropwise adding H into the mixed solution2C2O4Stirring the solution for 10 hours, and then adjusting the pH value of the solution to 7 by using ammonia water; fourth, adding Fe2O3Stirring continuously, reacting for 3h to obtain a red-gray precipitate, and washing with distilled water for 5 times; fifthly, putting the cleaned precipitate into an electric heating blast drying oven at 80 ℃, drying, crushing to 60 meshes, heating to 750 ℃ at a speed of 10 ℃/min in a muffle furnace, preserving heat for 720 min, and then annealing and cooling; and sixthly, cleaning with deionized water, drying in a 40 ℃ oven, and crushing to 100 meshes to obtain the radioactive decontamination strippable membrane thermosensitive degradation catalyst.
The radioactive decontamination strippable film is added according to the weight percentage of 3 percent before use and is evenly stirred, and is stripped after use and naturally stockpiled for 30 days with the degradation rate of 91 percent. After the radioactive decontamination strippable film is used and stripped, the radioactive decontamination strippable film is added according to the weight percentage of 8 percent and is uniformly mixed, and the radioactive decontamination strippable film is naturally stockpiled for 20 days with the degradation rate of 96 percent.
Example 2: taking Bi (NO) according to the weight portion3)340 portions of Sr (NO)3)223 parts of Fe2O322 portions of H2C2O420 parts of (1); in the first step, Bi (NO)3)3、Sr(NO3)2Dissolving in 2000 parts of deionized water; the second step is to mix H2C2O4Dissolving into 500 parts of deionized water; the third step is to stir the mixture at 1000r/min in Bi (NO)3)3、Sr(NO3)2Dropwise adding H into the mixed solution2C2O4Stirring the solution for 10 hours, and then adjusting the pH value of the solution to 7 by using ammonia water; fourth, adding Fe2O3Stirring continuously, reacting for 3h to obtain a red-gray precipitate, and washing with distilled water for 5 times; fifthly, putting the cleaned precipitate into an electric heating blast drying oven at 80 ℃, drying, crushing to 60 meshes, heating to 750 ℃ at a speed of 10 ℃/min in a muffle furnace, preserving heat for 720 min, and then annealing and cooling; and sixthly, cleaning with deionized water, drying in a 40 ℃ oven, and crushing to 100 meshes to obtain the radioactive decontamination strippable membrane thermosensitive degradation catalyst.
The radioactive decontamination strippable film is added in 4 percent by weight before use and is uniformly stirred, and is stripped after use and naturally stockpiled for 27 days, wherein the degradation rate is 92 percent. The radioactive decontamination strippable film is added and uniformly mixed according to the weight percentage of 7 percent after being used and stripped, and is naturally stockpiled for 26 days, and the degradation rate is 94 percent.
Example 3: taking Bi (NO) according to the weight portion3)350 portions of Sr (NO)3)225 parts of Fe2O320 portions of H2C2O418 parts of a mixture; in the first step, Bi (NO)3)3、Sr(NO3)2Dissolving in 2000 parts of deionized water; the second step is to mix H2C2O4Dissolving into 500 parts of deionized water; the third step is to stir the mixture at 1000r/min in Bi (NO)3)3、Sr(NO3)2Dropwise adding H into the mixed solution2C2O4Stirring the solution for 10 hours, and then adjusting the pH value of the solution to 7 by using ammonia water; fourth, adding Fe2O3Stirring continuously, reacting for 3h to obtain a red-gray precipitate, and washing with distilled water for 5 times; fifthly, putting the cleaned precipitate into an electric heating blast drying oven at 80 ℃, drying, crushing to 60 meshes, heating to 750 ℃ at a speed of 10 ℃/min in a muffle furnace, preserving heat for 720 min, and then annealing and cooling; and sixthly, cleaning with deionized water, drying in a 40 ℃ oven, and crushing to 100 meshes to obtain the radioactive decontamination strippable membrane thermosensitive degradation catalyst.
The radioactive decontamination strippable film is added according to the weight percentage of 5 percent before use and is evenly stirred, and is stripped after use and naturally stockpiled for 20 days, and the degradation rate is 92 percent. After the radioactive decontamination strippable film is used and stripped, the radioactive decontamination strippable film is added according to the weight percentage of 6 percent and is uniformly mixed, and the radioactive decontamination strippable film is naturally stockpiled for 30 days with the degradation rate of 94 percent.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.
Claims (3)
1. A preparation method of a radioactive decontamination peelable film heat-sensitive degradation catalyst is characterized by sequentially comprising the following steps:
A. preparing raw materials: weighing the following components in parts by weight: bi (NO)3)340-50 parts; sr (NO)3)220-25 parts; fe2O320-25 parts; h2C2O415-20 parts for later use;
B. adding Bi (NO)3)3、Sr(NO3)2Dissolving in 2000 parts of deionized water;
C. h is to be2C2O4Dissolving into 500 parts of deionized water;
D. stirring at 1000r/min in Bi (NO)3)3、Sr(NO3)2Dropwise adding H into the mixed solution2C2O4Stirring the solutionStirring for 10 h, and adjusting the pH value of the solution to 7 by using ammonia water;
E. adding Fe2O3Stirring continuously, reacting for 3h to obtain a red-gray precipitate, and washing with distilled water for 5 times;
F. drying the cleaned precipitate in an electrothermal blowing drying oven at 80 ℃, crushing to 60 meshes, heating to 750 ℃ at a speed of 10 ℃/min in a muffle furnace, preserving heat for 720 min, and then annealing and cooling;
G. washing with deionized water, drying in a 40 ℃ oven, and crushing to 100 meshes to obtain the radioactive decontamination strippable membrane degradation catalyst.
2. The application method of the radioactive decontamination peelable film heat-sensitive degradation catalyst is characterized in that the radioactive decontamination peelable film is added according to the weight percentage of 3-5% before use and is uniformly stirred, and is peeled off after use and naturally stored for 20-30 days, wherein the degradation rate is more than or equal to 90%.
3. The application method of the radioactive decontamination peelable film heat-sensitive degradation catalyst is characterized in that the radioactive decontamination peelable film is added and uniformly mixed according to the weight percentage of 6-8% after being peeled off, and is naturally stored for 20-30 days, and the degradation rate is more than or equal to 90%.
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