Method for preparing biological composite nano-water-purifying materials for removing radioactive substances in water

A technology of composite nanomaterials and radioactive substances, applied in biological water/sewage treatment, water/sewage treatment, chemical instruments and methods, etc., can solve problems such as inability to give full play to adsorption characteristics and difficulty in separating metal compounds

Inactive Publication Date: 2010-05-05
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In conventional treatment methods, metal nanomaterials have a high adsorption effect on radioactive substances in water due to their large specific surface area and high charge density, but it is difficult to separate these metal compounds from water, resulting in The adsorption characteristics of these substances cannot be fully utilized in the water treatment operation

Method used

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  • Method for preparing biological composite nano-water-purifying materials for removing radioactive substances in water
  • Method for preparing biological composite nano-water-purifying materials for removing radioactive substances in water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A hybrid radiation absorbing system was prepared from AlOOH (boehmite) nanofibers and Mucor mucedo.

[0020] Add 16 grams of peptone, 20 grams of glucose, and 12.5 grams of agar into 1000 milliliters of distilled water, stir evenly, heat to boiling, boil for 30 minutes to completely dissolve the added organic matter and sterilize at the same time, transfer to a slightly cooled (93°C) medium Add 5 grams of glycerol to the medium, and inject the prepared solid culture medium into plastic culture dishes with a diameter of 9 mm in an aseptic room in an amount of 36 grams each.

[0021] Under sterile conditions at 37° C., 2 ml of commercially available Mucorus macromyces liquid at 80 CFU / ml was inoculated in the prepared solid medium, and cultured for 72 hours. Use a scraper to scrape the grown Mucorella macrophylla from the surface of the solid medium.

[0022] Take 9 grams of laboratory-made AlOOH nanofibers (obtained by hydrolysis of aluminum powder in distilled water at...

Embodiment 2

[0027] by TiO 2 (Titanium dioxide) nanotubes and Aspergillus niger (Aspergillus niger) to prepare a hybrid radiation-absorbing bacteria system.

[0028] Add 16 grams of peptone, 20 grams of glucose, and 12.5 grams of agar into 1000 milliliters of distilled water, stir evenly, heat to boiling, boil for 30 minutes to completely dissolve the added organic matter and sterilize at the same time, transfer to a slightly cooled (93°C) medium Add 5 grams of glycerol to the medium, and inject the prepared solid culture medium into plastic culture dishes with a diameter of 9 mm in an aseptic room in an amount of 36 grams each.

[0029] Inoculate 2 ml of 100 CFU / ml commercially available Aspergillus niger liquid into the prepared solid medium under sterile conditions at 37° C., and cultivate for 72 hours. Scrape off the Aspergillus niger thalline that grows out from the surface of the solid medium with a scraper.

[0030] Take 20 grams of laboratory-made TiO 2 (with nano powder TiO 2 ...

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Abstract

The invention belongs to the environment protection field, not only belonging to the treatment methods for controlling sewage disposal in the nuke industry and the radiochemistry industry but also belonging to the methods for eliminating radioactive isotopes in the nature water. The invention in particular relates to a method for preparing a series of biological composite nano-water-purifying materials which take mildews with different features as the matrices and various metallic nano materials (such as oxides and hydroxides of titanium, aluminum and iron, etc.) in different nano shapes (nano particles, nano fibers and nano tubes) as the modified materials and can effectively remove the radioactive substances in the water. The method fully utilizes the adsorption effect of the microbes on the surrounding substances to attach the nano materials on the surfaces of the microbial cells, thus obviously improving the capabilities of the nano materials in adsorption and dirt removal; therefore, the nano materials can effectively remove the radioactive substances in the water.

Description

technical field [0001] The invention belongs to the field of environmental protection, not only belongs to the treatment method for treating sewage discharged by nuclear industry and radioactive chemical industry, but also belongs to the method for removing radioactive isotope in natural water. It specifically involves a series of various metal nanomaterials (oxides and hydroxides of titanium, aluminum, iron and other metals) with different shapes of molds as substrates and different nanometer shapes (nanoparticles, nanofibers, nanotubes). The invention relates to a preparation method of a biocomposite nano water purification material which is a modified material and can effectively remove radioactive substances in water. technical background [0002] Nuclear energy has the characteristics of small size, large energy, less pollution, abundant reserves, and low cost, making it more and more important in today's energy crisis. With the increasingly widespread application of n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/58C02F3/32C02F1/28
Inventor 韩炜丘比克·马克西姆陈海峰李爽牛晓薇周亮韩旭郑天宁
Owner JILIN UNIV
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