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A kind of foam geopolymer adsorption material and its preparation method and application

A technology of geopolymers and adsorption materials, applied in the fields of alkali metal compounds, chemical instruments and methods, adsorption water/sewage treatment, etc., can solve the problems that have not been effectively developed, difficult to achieve pore connectivity, difficult to control pore structure, etc. , to achieve excellent hydrophobic function, avoid alkali loss, and high-efficiency adsorption effect

Active Publication Date: 2022-07-22
钠石生态科技(深圳)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the application of foam geopolymers in the water environment has not been effectively developed. The main reasons are: 1) The geopolymer system is overbasic and contains a large amount of free alkali, which makes it not resistant to water, and it is easy to cause alkali loss when it encounters water. and weathering efflorescence; 2) The pore structure of the foam geopolymer is difficult to control, especially the connectivity of the pores

Method used

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  • A kind of foam geopolymer adsorption material and its preparation method and application
  • A kind of foam geopolymer adsorption material and its preparation method and application
  • A kind of foam geopolymer adsorption material and its preparation method and application

Examples

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Effect test

Embodiment 1

[0035] A preparation method of a foam geopolymer adsorbent material, comprising the following process steps:

[0036] a. Mix 5 parts of fly ash, 2 parts of blast furnace slag and 3 parts of activated carbon according to the mass ratio to obtain a mixed dry material; add the mixed dry material to the activator and stir at 100 r / min for 1 min to obtain a mixing slurry, mix The mass ratio of dry material to the activator is 5:3.5; wherein the particle size of fly ash and blast furnace slag is less than or equal to 45 μm, and the activated carbon is obtained by drying activated carbon particles with a particle size of 1mm-2mm at 100°C for 15h; The preparation method of the activator is as follows: the alkali solution and sodium water glass are stirred and mixed for 20 minutes according to a mass ratio of 4:1, and then left to stand for 24 hours; the alkali solution is a 3.5 mol / L sodium hydroxide solution; the sodium The modulus of water glass is 3.4;

[0037] b. Add 25wt% hydrog...

Embodiment 2

[0041] A preparation method of a foam geopolymer adsorbent material, comprising the following process steps:

[0042] a. Mix 5 parts of fly ash, 3 parts of blast furnace slag and 2 parts of activated carbon according to the mass ratio to obtain a mixed dry material; add the mixed dry material to the activator and stir at 110 r / min for 2 min to obtain a mixed slurry, mix The mass ratio of dry material to the activator is 5:4; wherein, the particle size of fly ash and blast furnace slag is less than or equal to 45 μm, and the activated carbon is obtained by drying activated carbon particles with a particle size of 1 mm-2 mm at 110 ° C for 12 hours; The preparation method of the activator is as follows: the alkali solution and sodium water glass are stirred and mixed for 30 minutes according to a mass ratio of 5:1, and then left for 28 hours to obtain; the alkali solution is a 4 mol / L sodium hydroxide solution; the sodium water The modulus of the glass is 3.5;

[0043]b, add 30w...

Embodiment 3

[0047] A preparation method of a foam geopolymer adsorbent material, comprising the following process steps:

[0048] a. Mix 6 parts of fly ash, 2 parts of blast furnace slag and 2 parts of activated carbon according to the mass ratio to obtain a mixed dry material; add the mixed dry material to the activator and stir at 120 r / min for 3 min to obtain a mixing slurry, mix The mass ratio of dry material to the activator is 5:4.5; wherein, the particle size of fly ash and blast furnace slag is less than or equal to 45 μm, and the activated carbon is obtained by drying activated carbon particles with a particle size of 1 mm-2 mm at 120 ° C for 10 hours; The preparation method of the activator is as follows: the alkali solution and sodium water glass are stirred and mixed for 40 minutes according to a mass ratio of 6:1, and then left to stand for 30 hours; the alkali solution is a 4.5 mol / L sodium hydroxide solution; the sodium The modulus of water glass is 3.6;

[0049] b. Add 35...

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Abstract

The invention relates to the technical field of solid waste resource utilization, and specifically discloses a foam geopolymer adsorption material and a preparation method and application thereof. The preparation method of the foamed geopolymer adsorbent material comprises the following process steps: a. mixing fly ash, blast furnace slag and activated carbon according to mass ratio to obtain a mixed dry material, adding an activator and stirring to obtain a mixing slurry; b. . Add hydrogen peroxide and sodium lauryl sulfate solution to the mixing slurry, stir and mix, add to the mold for sealing and maintenance, and obtain the initial module; c. Immerse the initial module in the modifier for ultrasonic immersion, take out and dry to obtain foam Geopolymer adsorbent material. The preparation method of the foamed geopolymer adsorption material provided by the present invention can obtain the foamed geopolymer with high through-hole and good hydrophobic performance, and the foamed geopolymer has high-efficiency adsorption of various pollutants such as heavy metals and oil pollution. The field of water pollution control has extremely high application prospects.

Description

technical field [0001] The invention relates to the technical field of solid waste resource utilization, in particular to a foam geopolymer adsorption material and a preparation method and application thereof. Background technique [0002] Geopolymer is a kind of cementitious material obtained by chemical alkali excitation with silica-alumina solid waste as the main raw material. Geopolymers are widely regarded as green cementitious materials that can replace or partially replace cement due to their high mechanical strength, corrosion resistance, low carbon and environmental protection and many other advantages. By means of physical foaming or chemical foaming, foam geopolymers with porous structure can be prepared by introducing air bubbles into the geopolymer system. Because foam geopolymers are loose and porous, they are widely used in the research and application of building functional materials such as lightweight partition materials, thermal insulation materials, and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/24B01J20/26B01J20/28B01J20/30C02F1/28
CPCB01J20/24B01J20/262B01J20/20B01J20/28045C02F1/288
Inventor 邵宁宁董志君唐江松
Owner 钠石生态科技(深圳)有限公司
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