Modified biomass-based composite adsorption material for treating radioactive pollutants

A composite adsorption material and composite material technology are applied in the field of modified biomass-based composite adsorption materials and their preparation, which can solve the problems of ecological environment pollution, large consumption, global warming, etc., and achieve high treatment efficiency and high recycling efficiency. , the effect of simple equipment

Pending Publication Date: 2021-12-21
FUZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] With the development of social industrialization, human demand for electric energy is increasing day by day. Traditional power generation technology needs to consume a large amount of non-renewable energy such as coal and oil, and the process of power generation brings problems such as ecological environmental pollution and global warming.

Method used

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  • Modified biomass-based composite adsorption material for treating radioactive pollutants
  • Modified biomass-based composite adsorption material for treating radioactive pollutants
  • Modified biomass-based composite adsorption material for treating radioactive pollutants

Examples

Experimental program
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Embodiment 1

[0038] The simple in-situ synthesis method preparation process provided by the present invention synthesizes the method for A-SA / MOF-5 adsorbent, and the steps are as follows:

[0039] (1) Fully mix 1.5 g sodium alginate, 50 mL N,N-dimethylformamide and 5 mL ultrapure water as solution A;

[0040] (2) Thoroughly mix 1.75 mL 3-aminopropyltriethoxysilane and 60 mL N,N-dimethylformamide as solution B;

[0041] (3) After stirring for 1 hour, pour solution B into solution A and continue to mix and stir for 5 hours;

[0042] (4) Washing with ethanol three times, and then obtaining the modified SA solid powder after vacuum freeze-drying;

[0043] (5) Disperse 0.2 g of modified SA and 0.4 g of zinc nitrate hexahydrate simultaneously in 20 mL of N,N-dimethylformamide mixed solution and stir for 30 min;

[0044] (6) In addition, 0.12 g of terephthalic acid was dispersed in a mixed solution of 1.0 mL of triethylamine and 20 mL of N,N-dimethylformamide and stirred for 30 min;

[0045] (7...

Embodiment 2

[0053] This example shows a composite material A-SA / MOF-5 as an adsorbent to treat UO in uranium-containing wastewater 2 2+ study on the adsorption properties.

[0054] The present invention uses A-SA / MOF-5 as adsorbent, UO 2 2+ As an adsorption object, explore the different mass ratios of the carrier and the load in the composite material, the amount of the adsorbent, the initial pH, the influence of the coexisting ions, the recycling rate, the adsorption temperature and the UO 2 2+ Initial concentration equal to UO 2 2+ The influence of adsorption performance and the law of influence, the adsorption isotherm model and the adsorption kinetic model were fitted, and the optimal adsorption conditions were explored, laying a sufficient foundation for the efficient removal of uranium pollution.

[0055] (1) Take 4 Erlenmeyer flasks, weigh 25 mg of SA before and after modification, MOF-5, and A-SA / MOF-5 with a mass ratio of 1:1, and add them to 50 mL of unadjusted pH at a con...

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Abstract

The invention discloses a modified biomass-based composite adsorption material for treating radioactive pollutants and a preparation method of the modified biomass-based composite adsorption material. According to the invention, sodium alginate (SA) is used as a carrier, 3-aminopropyltriethoxysilane (APTES) is used for modifying the carrier, and then MOF-5 is used for loading, so the A-SA/MOF-5 composite adsorption material is synthesized. The method is simple in synthesis process, mild in reaction conditions and green and controllable in reaction process, and the prepared A-SA/MOF-5 composite adsorption material can efficiently treat uranium-containing radioactive wastewater and has the advantages of being wide in raw material source, easy to synthesize, low in cost, high in treatment efficiency, good in selectivity, high in recycling efficiency and the like.

Description

technical field [0001] The invention belongs to the technical field of adsorption material preparation, and in particular relates to a modified biomass-based composite adsorption material for treating radioactive pollutants and a preparation method thereof. Background technique [0002] With the development of social industrialization, the human demand for electric energy is increasing day by day. Traditional power generation technology needs to consume a large amount of non-renewable energy such as coal and oil, and the process of power generation brings problems such as ecological environmental pollution and global warming. Nuclear energy has the advantages of high efficiency and no greenhouse gas emissions, and has been widely concerned as a new type of clean energy. With the rapid development of nuclear energy, radioactive and toxic waste and waste liquid will be produced in the process of uranium mining and nuclear fuel cycle, which poses huge potential hazards to human...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/22B01J20/30C02F1/28G21F9/12C02F101/20
CPCB01J20/24B01J20/226C02F1/286C02F1/285G21F9/12B01J2220/4843C02F2101/006C02F2101/20
Inventor 肖高郭海仁刘明华
Owner FUZHOU UNIV
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