Preparation method of porous carbon loaded zero-valent iron composite material

A composite material, zero-valent iron technology, applied in the field of water treatment, can solve the problems of difficult to achieve industrialized production, high production cost of zero-valent iron, and the preparation process is not environmentally friendly, and achieves green environmental protection cost, large specific surface area, good large-scale The effect of industrial production and application potential

Pending Publication Date: 2021-11-02
JIANGXI INST OF RARE EARTHS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] In view of the problems existing in the prior art, the purpose of the present invention is to provide a method for preparing a porous carbon-supported zero-valent iron composite material, so as to solve the problem that the current zero-valent iron preparation cost is high and the preparation process is not environmentally friendly, which makes it difficult to realize industrial production, and In the actual use process, it is very easy to spontaneously agglomerate and be oxidized to cause rapid deactivation and other problems

Method used

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  • Preparation method of porous carbon loaded zero-valent iron composite material
  • Preparation method of porous carbon loaded zero-valent iron composite material
  • Preparation method of porous carbon loaded zero-valent iron composite material

Examples

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Embodiment 1

[0051] This embodiment provides the preparation of a porous carbon composite material supported zero-valent iron, comprising the steps of:

[0052] (1) The neodymium iron slag dried 3 hours at 100 deg.] C, allowed to cool; 3 hours using ball milling;

[0053] (2) Weigh 1.6g of neodymium iron slag, as a beaker, 1.8g of activated charcoal was added, which made the magnet iron slag (as Fe 2 O 3 Calculated as moles) and activated carbon molar ratio of 1:15, was added 5.4g of KOH, KOH and that the mass ratio of activated carbon is 3: 1, 100mL anhydrous ethanol was added, the agitator speed was 300r / min, stirring 30min;

[0054] (3) The beaker mouth sealed, placed in an ultrasonic cleaning machine power is 1200W, the ultrasonic for 2 hours at room temperature; dried at 80 ℃ 12 hours;

[0055] (4) grinding the resulting solid was dried, placed in a covered crucible at a heating rate and conditions min 10 ℃ / 900 ℃ the calcined one hour, the mesoporous carbon composite material load ZVI...

Embodiment 2

[0058] This embodiment provides the preparation of a porous carbon composite material supported zero-valent iron, comprising the steps of:

[0059] (1) The neodymium iron slag dried 3 hours at 100 deg.] C, allowed to cool; 3 hours using ball milling;

[0060] (2) Weigh 1.6g of neodymium iron slag, as a beaker, 1.8g of activated charcoal was added, which made the magnet iron slag (as Fe 2 O 3 Calculated as moles) and activated carbon molar ratio of 1:15, was added 1.8g of KOH, KOH and the activated carbon mass ratio is 1: 1, 100mL anhydrous ethanol was added, the agitator speed was 300r / min, stirring 30min;

[0061] (3) The beaker mouth sealed, placed in an ultrasonic cleaning machine power is 1200W, the ultrasonic for 2 hours at room temperature; dried at 80 ℃ 12 hours;

[0062] (4) grinding the resulting solid was dried, placed in a covered crucible at a heating rate and conditions min 10 ℃ / 900 ℃ the calcined one hour, the mesoporous carbon composite material load ZVI i.e. ma...

Embodiment 3

[0065] This embodiment provides the preparation of a porous carbon composite material supported zero-valent iron, comprising the steps of:

[0066] (1) The neodymium iron slag dried 3 hours at 100 deg.] C, allowed to cool; 3 hours using ball milling;

[0067] (2) Weigh 1.6g of neodymium iron slag, as a beaker, 1.8g of activated charcoal was added, which made the magnet iron slag (as Fe 2 O 3 Calculated as moles) and activated carbon molar ratio of 1:15, was added 0.6g of KOH, KOH and that the mass ratio of activated carbon was 1: 3, 100mL anhydrous ethanol was added, the stirrer speed set to 300r / min, stirring 30min;

[0068] (3) The beaker mouth sealed, placed in an ultrasonic cleaning machine power is 1200W, the ultrasonic for 2 hours at room temperature; dried at 80 ℃ 12 hours;

[0069] (4) grinding the resulting solid was dried, placed in a covered crucible at a heating rate and conditions min 10 ℃ / 900 ℃ the calcined one hour, the mesoporous carbon composite material load ...

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Abstract

The invention relates to a preparation method of a porous carbon loaded zero-valent iron composite material. The preparation method comprises the steps of (1) mixing neodymium iron boron tailings and a carbon material, sequentially adding a pore forming agent and alcohol, and stirring to obtain a mixed primary material; and (2) sequentially carrying out ultrasonic treatment, drying and roasting on the mixed primary material obtained in the step (1) to obtain the porous carbon loaded zero-valent iron composite material. According to the preparation method of the zero-valent iron composite material, preparation of the high-performance lead adsorption composite material is achieved by adopting specific raw materials and utilizing rare earth elements in the raw materials. The prepared composite material has the characteristics of good dispersity, uniform loading, large specific surface area, good stability and the like.

Description

Technical field [0001] The present invention relates to the field of water treatment, and more particularly to a method of preparing a porous carbon load zero-composite composite material. Background technique [0002] With the rapid development of China's industrial, a large number of toxic and hazardous substances are discharged into the water, with heavy metals pollution problems increasingly serious. Heavy metal ions such as lead, cadmium, mercury, chromium and metal arsenic in the water body have a significant persistent toxic effect on people, animals and plants, and microorganisms. These heavy metals can not only be degraded by microbial, but also produce a more serious toxicity effect in the organism, especially in human body. When accumulating to a certain amount, the human body will have a series of symptoms such as dizziness, nausea, joint pain, and forgetfulness, which is extremely harmful to the human body. Common techniques for heavy metal removal in the water inclu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/28C02F1/70C02F101/20
CPCC02F1/283C02F1/705C02F2101/20
Inventor 胡康石绍渊万印华袁文静刘佳铭林睿茜
Owner JIANGXI INST OF RARE EARTHS CHINESE ACAD OF SCI
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