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Knittable seawater uranium extraction adsorption material and flexible regulation and control preparation method thereof

A seawater and deionized water technology, applied in the field of uranium adsorption materials, can solve the problems of difficulty in realizing flexible regulation of bamboo strips, difficulty in realizing suspension and complete recovery of adsorbent materials, and difficulty in realizing macroscopic large-area molding application, etc. The effect of accelerating the mass transfer process

Active Publication Date: 2021-08-10
HARBIN ENG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Knittable seawater uranium extraction adsorption material and flexible regulation and control preparation method thereof
  • Knittable seawater uranium extraction adsorption material and flexible regulation and control preparation method thereof
  • Knittable seawater uranium extraction adsorption material and flexible regulation and control preparation method thereof

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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

The invention discloses a knittable seawater uranium extraction adsorption material and a flexible regulation and control preparation method thereof, and relates to the technical field of adsorption materials, in particular to a knittable seawater uranium extraction material and a flexible regulation and control preparation method thereof. The preparation method comprises the following steps: carrying out ultrasonic treatment on the bamboo splits by using acetone, ethanol and deionized water, selecting H2O2 as a solvent, carrying out hydroxylation treatment on the bamboo splits by using a hydrothermal method, and finally carrying out amidoximation reaction by using an alkaline solution of NH2OH.HCl to prepare the amidoximated bamboo splits. The method is simple in preparation operation and low in cost, and a macroscopic large-area formed adsorption material can be built. Besides, oxime nitrogen, amino nitrogen and oxime oxygen in the amidoxime functional group can be subjected to chemical coordination with uranyl ions, so the selectivity of the bamboo splits to the uranyl ions is effectively improved, and the effect of specifically capturing the uranyl ions is achieved.

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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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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