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Nano composite material, preparation method thereof, water treatment preparation, water treatment method and water treatment device

A nanocomposite material and water treatment technology, which is applied in the field of water treatment devices and water treatment preparations, can solve the problems of low ratio, secondary pollution, etc., and achieve the effect of high adsorption capacity, stable adsorption, and automatic batch water treatment

Inactive Publication Date: 2013-01-02
THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the disadvantages of the existing activated carbon water treatment agent that the ratio of adsorption capacity to cost is low, its adsorption is physical adsorption, and it is easy to cause secondary pollution. Nanocomposite

Method used

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  • Nano composite material, preparation method thereof, water treatment preparation, water treatment method and water treatment device
  • Nano composite material, preparation method thereof, water treatment preparation, water treatment method and water treatment device
  • Nano composite material, preparation method thereof, water treatment preparation, water treatment method and water treatment device

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Experimental program
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Effect test

Embodiment 1

[0042] Get 4mg particle diameter and be that the activated carbon of 6000 mesh is dispersed in the mixed solution that 4mL concentration is the glutathione aqueous solution of 25mmol / L and the sodium selenite aqueous solution that 1mL concentration is 25mmol / L, the selenium element in activated carbon and sodium selenite The mass ratio is 2:1, and the molar ratio of glutathione to sodium selenite is 4:1. Add 1M NaOH to adjust the pH value to 8. Stir the reaction at 0° C. for 2 h, centrifuge the reaction solution to obtain a solid product, and wash the separated solid product. The dispersion of the nanocomposite material containing activated carbon was ultrasonicated for 10 minutes under 100W ultrasonic conditions, and observed by a scanning electron microscope (model Hitachi S4800FESEM), the shedding rate of the selenium nanoparticles was less than 1% (weight percent). The particle size of the selenium nanoparticles measured by a transmission electron microscope (Tecnai G220S-...

Embodiment 2

[0045] Get 1g particle diameter and be that the active carbon of 3000 mesh is dispersed in the mixed solution that 5ml concentration is the glutathione aqueous solution of 125mmol / L and the sodium selenite aqueous solution that 62.5mL concentration is 10mmol / L, the selenium element in activated carbon and sodium selenite The mass ratio of glutathione and sodium selenite is 1:1. Add 1M NaOH to adjust the pH value to 8. Stir the reaction at 30° C. for 3 h, centrifuge the reaction solution to obtain a solid product, and wash the separated solid product. The dispersion of the nanocomposite material containing activated carbon was ultrasonicated for 10 minutes under 100W ultrasonic conditions, and observed by a scanning electron microscope (model Hitachi S4800FESEM), the shedding rate of the selenium nanoparticles was less than 1% (weight percent). The particle size of the selenium nanoparticles measured by a transmission electron microscope (Tecnai G220S-TWIN) is 10-1000 nanometer...

Embodiment 3

[0047] Take 0.5g of activated carbon with a particle size of 2000 mesh and disperse it in a mixed solution of 10mL glutathione aqueous solution with a concentration of 1000mmol / L and 1mL sodium selenite aqueous solution with a concentration of 500mmol / L, and add 1M NaOH to adjust the pH value to 8. The mass ratio of activated carbon to selenium in sodium selenite is 12.5:1, and the mass ratio of glutathione to sodium selenite is 20:1. The reaction was stirred at -20°C for 5 h, and the reaction solution was centrifuged to obtain a solid product, which was washed and separated. The dispersion of the nanocomposite material containing activated carbon was ultrasonicated for 10 minutes under 100W ultrasonic conditions, and observed by a scanning electron microscope (model Hitachi S4800FESEM), the shedding rate of the selenium nanoparticles was less than 1% (weight percent). The particle size of the selenium nanoparticles measured by a transmission electron microscope (Tecnai G220S-...

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Abstract

The invention provides a nano composite material containing active carbon and a preparation method thereof. The nano composite material contains active carbon and selenium nano particles. The invention further provides a water treatment preparation of the nano composite material containing the active carbon, a water treatment method and a water treatment device. On one hand, the specific surface area of the active carbon is large, the adsorptive property is good, the active carbon is dispersed in water, and the cost is low; on the other hand, as the selenium nano particles have high specific surface are, selenium and various heavy metal such as mercury, lead, silver and the like form stable selenide, so that the heavy metal in water can be treated effectively, and further the nano composite material obtained by the combining of the active carbon and the selenium nano particles has the advantages that the cost is low, the absorbing amount is large, the absorption stability is high, various heavy metal can be obtained simultaneously, and the like.

Description

technical field [0001] The invention relates to a nanocomposite material containing activated carbon. In particular, the present invention relates to a nanocomposite material containing activated carbon and selenium nanoparticles and its preparation method. The present invention further relates to a preparation for water treatment containing the above nanocomposite containing activated carbon. The present invention further relates to the use of A method for treating water with an agent and a device for water treatment. Background technique [0002] Pure water is an essential resource for human survival, but due to factors such as unbalanced spatial distribution and domestic waste, 60% of the world's water supply is insufficient. And with the intensification of human activities, various industrial wastewater, pesticides and other toxic substances are discharged into rivers, lakes and seas, polluting our limited water resources. Therefore, the governments of various countrie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B82Y30/00B82Y40/00B01J20/20B01J20/30C02F1/28C02F1/62
Inventor 方英张涛李红变
Owner THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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