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Radioactive chemical waste treatment apparatus and radioactive chemical waste treatment method
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A radiochemical and waste treatment technology, applied in radioactive purification, chemical instruments and methods, separation methods, etc., can solve the problems of non-reusable, selective and efficient adsorption of adsorbent materials, etc., to achieve reduced volume and high treatment. Effect
Active Publication Date: 2021-04-16
KOREA ATOMIC ENERGY RES INST
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[0009]
Therefore, in order to remove radioactive iodine and / or radioactive cesium, various studies have been conducted, but conventional methods have limitations in selectivity and high-efficiency adsorption, and there is a limit that the adsorbent material cannot be reused
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manufacture example 1
[0133] Production Example 1. Production of platinum-coated ferrimagnetic nanoparticles (Fe@Pt)
[0134] 1) To fabricate radioactive chemical waste adsorption components, iron-containing magnetic nanoparticle powders were prepared using ferric chloride and sodium borohydride. Subsequently, potassium chloroplatinate was added to the prepared magnetic nanoparticles to prepare platinum-coated ferrimagnetic nanoparticles.
[0135] 2) Subsequently, in order to enhance the stability of the prepared nanoparticles, the nanoparticles are sintered at about 50° C. to 900° C. in a high-temperature furnace in a hydrogen atmosphere. The sintered nanoparticles were washed and dealloyed in piranha solution (sulfuric acid:hydrogen peroxide = 3:1) to prepare ferrimagnetic nanoparticle adsorption components (Fe@Pt).
[0136] The image after synthesis of the Fe@Pt adsorption part of Fabrication Example 1 is shown in Figure 4 , and the transmission electron microscope (TEM) image (a) and energ...
manufacture example 2
[0139] Production Example 2. Production of platinum-coated nickel magnetic nanoparticles (Ni@Pt)
[0140] Manufactured in the same manner as Production Example 1-1), the difference is that nickel chloride was used instead of ferric chloride in Production Example 1-1), thereby producing a platinum-coated nickel magnetic nanoparticle adsorption member ( Ni@Pt).
[0141] The scanning microscope (SEM) image (a) and EDS measurement results (b) and (c) of the Ni@Pt adsorption member of Production Example 2 are shown in Image 6 middle.
[0142] according to Image 6 , it was confirmed from the SEM image that the adsorption member of Production Example 2 was synthesized. In addition, it was confirmed from the EDS measurement results that the synthesized adsorption member contained nickel and platinum, so it was confirmed that a Ni@Pt radioactive chemical waste adsorption member was produced.
manufacture example 3
[0143] Production Example 3. Production of platinum-coated cobalt magnetic nanoparticles (Co@Pt)
[0144] Manufactured in the same manner as Production Example 1-1), the difference is that cobalt chloride was used instead of ferric chloride in Production Example 1-1), thereby producing a platinum-coated cobalt magnetic nanoparticle adsorption member ( Co@Pt).
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Abstract
The present invention relates to a radioactive chemical waste treatment apparatus. The radioactive chemical waste treatment apparatus includes an adsorption unit including an radioactive chemical waste adsorption member for adsorbing and separating radioactive chemical wastes from radioactive chemical waste-containing fluid, and a regeneration unit which is in fluidic communication with the adsorption unit and is for regenerating the radioactive chemical waste adsorption member by desorbing the radioactive chemical wastes from the adsorption member with the radioactive chemical wastes adsorbed thereonto, and to a radioactive chemical waste treatment method including (A) adsorbing radioactive chemical wastes onto a radioactive chemical waste adsorption member and separating the radioactive chemical wastes from a radioactive chemical waste-containing fluid, and (B) desorbing the radioactive chemical wastes from the radioactive chemical waste adsorption member with the radioactive chemical wastes adsorbed thereonto, and regenerating the radioactive chemical waste adsorption member.
Description
[0001] Cross References to Related Applications [0002] This application claims Korean Patent Application No. 10-2019-0128001 filed with the Korean Intellectual Property Office on October 15, 2019 and Korean Patent Application No. 10-2020-0046862 filed with the Korean Intellectual Property Office on April 17, 2020 and priority of Korean Patent Application No. 10-2020-0132880 filed with the Korean Intellectual Property Office on October 14, 2020, the disclosure of which is incorporated herein by reference. technical field [0003] The application relates to a radioactive chemical waste treatment device and a radioactive chemical waste treatment method. Background technique [0004] Radioactive iodine and / or radioactive cesium are radionuclides not only contained in radioactive waste containing nuclear fuel but also prone to leakage of radioactive iodine and / or radioactive cesium in accidents at nuclear power plants. When damaged nuclear fuel is generated in the nuclear fuel...
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