A weavable seawater uranium extraction adsorption material and its flexible control preparation method

A technology of seawater and deionized water, which is applied in the field of uranium adsorption materials, can solve the problems of difficulty in realizing flexible control of bamboo strips, difficulty in suspension and complete recovery of adsorption materials, and difficulty in realizing macroscopic large-area forming applications, so as to improve selectivity, The effect of accelerating the mass transfer process

Active Publication Date: 2022-04-12
HARBIN ENG UNIV
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  • Abstract
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Problems solved by technology

[0011] Aiming at the disadvantages existing in the existing materials, the present invention provides a weavable seawater uranium extraction adsorption material and its flexible control preparation method, which effectively solves the problem that the existing adsorption materials are difficult to achieve macroscopic large-area molding applications and organic modification In the process, it is difficult to achieve flexible control of bamboo strips and the existing adsorption materials are difficult to achieve suspension and complete recovery

Method used

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  • A weavable seawater uranium extraction adsorption material and its flexible control preparation method
  • A weavable seawater uranium extraction adsorption material and its flexible control preparation method
  • A weavable seawater uranium extraction adsorption material and its flexible control preparation method

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Embodiment 1

[0036] Example 1: A preparation method of woven amidoximated bamboo strips for extracting uranium from seawater, the preparation process is shown in Figure 1, including the following steps:

[0037] Step 1: BS was sonicated with acetone, ethanol and deionized water for 0.5 h, respectively. Then, put BS into the reactor, and pour a certain volume mass fraction of 30% H 2 o 2 . Finally, load the above into BS and H 2 o 2 The reactor was placed in an oven, the temperature was set at 65°C, and the time was 6h.

[0038] Step 2: Accurately weigh 2.0g NH 2 OH·HCl and 1.0 g NaOH were poured into 50 mL of ethanol and stirred vigorously with a magnetic stirrer until the solids were completely dissolved. At the same time, 2.0 g of the treated BS was put into a three-necked flask for reflux reaction with an oil bath, the temperature was set at 70° C., and the time was 24 h. After the reaction was complete, the sample was taken out, rinsed with deionized water several times, and dri...

Embodiment 2

[0043] Embodiment 2: The method described in this embodiment and embodiment 1 is basically the same, the difference is that in step 1, add H 2 o 2 The concentration is 10%.

[0044] In this example, 10% H 2 o 2 Hydroxylation reaction was carried out in the environment, and the amidoximated bamboo strips prepared, denoted as AOBS-2, kept the original flexibility and weavability of BS.

Embodiment 3

[0045] Embodiment 3: The method described in this embodiment and embodiment 1 is basically the same, the difference is that in step 1, add H 2 o 2 The concentration is 20%.

[0046] In this example, 10% H 2 o 2 The environment was subjected to hydroxylation reaction, and the amidoximated bamboo strips prepared, denoted as AOBS-3, kept the original flexibility and weavability of BS, indicating that H 2 o 2 The concentration does not change the flexibility of BS.

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Abstract

A weavable seawater uranium extraction material and its flexible control preparation method relate to the technical field of adsorption materials, in particular a weavable seawater uranium extraction material and its flexible control preparation method. After sonicating bamboo strips with acetone, ethanol, and deionized water, select H 2 o 2 As a solvent, hydrothermal method is used to carry out hydroxylation treatment on it, and finally NH 2 Amidoximation reaction was carried out in alkaline solution of OH·HCl to prepare amidoximated bamboo strips. The method is simple in preparation and operation, low in cost, and can be built into a macroscopic large-area shaped adsorption material. In addition, the oxime nitrogen, amino nitrogen and oxime oxygen in the amidoxime functional group can be chemically coordinated with uranyl ions, which can effectively improve the selectivity of bamboo sticks to uranyl ions and achieve the effect of specifically capturing uranyl ions.

Description

technical field [0001] The invention relates to the technical field of uranium adsorption materials, in particular to a weavable seawater uranium extraction material and a flexible control preparation method thereof. Background technique [0002] As a low-carbon energy source with high energy density, nuclear energy can meet today's energy needs and improve environmental issues. Uranium is the main element in nuclear fuel supply and is in increasing demand. Onshore uranium reserves of about 6.3 million tons will be depleted within a century at current consumption rates. The total reserves of uranium in the ocean is one thousand times that of land-based uranium supply, up to 4.5 billion tons, which provides the possibility to solve the current energy crisis and ensure the future supply of uranium resources. Therefore, extracting uranium from seawater can improve the shortage of uranium resources and lay a solid foundation for the sustainable development of my country's nucl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/24B01J20/28B01J20/30C02F1/28C02F103/08
CPCB01J20/24B01J20/28057C02F1/286C02F2101/006C02F2103/08
Inventor 王君王莹刘琦张宏森刘婧媛陈蓉蓉于静朱佳慧李茹民刘培礼
Owner HARBIN ENG UNIV
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