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Nano zero-valent iron-copper-carbon microsphere material and preparation method thereof

A nano-zero-valent iron, copper-carbon technology, applied in nanotechnology, nanotechnology, chemical instruments and methods, etc., can solve the problems of unsolved nano-iron agglomeration, low recovery rate, low catalytic activity of catalysts, etc. Better diameter, improved catalytic activity, and superior catalytic performance

Active Publication Date: 2021-10-26
GUANGDONG INST OF ECO ENVIRONMENT & SOIL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Chinese invention patent application CN112742439A discloses a catalyst, preparation method and preparation equipment for refractory wastewater treatment, including the first component of nano zero-valent iron, powdered activated carbon and graphene and the second component of copper nitrate, and the preparation method In order to prepare nanometer zero valent iron first, then mix the various raw materials according to the mass ratio; finally put copper nitrate into the first component according to the mass ratio, and add catalytic hydrogen peroxide and catalytic persulfate to prepare the catalyst; this method only uses nanometer zero Simple mixing of valence iron and other raw materials, the catalytic activity of the catalyst is not high, the recovery rate is extremely low, and the problem of nano-iron agglomeration is not solved
[0006] Chinese invention patent application CN110054363A discloses a standard advanced treatment catalyst system, treatment method and equipment for quasi-surface Class IV water. The system includes a front-end pre-reduction catalyst and a secondary Deep purification catalyst, the iron / carbon mass ratio in the front-end pre-reduction catalyst is (2.5~7):1, the iron / carbon mass ratio in the secondary deep purification catalyst is (0.8~1.25):1, the The efficiency of catalyst treatment of sewage needs to be further improved

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  • Nano zero-valent iron-copper-carbon microsphere material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The raw material iron monomer of the iron-copper-carbon composite material is 3 parts of ferrous acetate, 1 part of carbon monomer, and 0.95 parts of basic copper carbonate as the copper monomer. The carbon monomer is a mixture of ethylenediaminetetraacetic acid, mannitol and β-cyclodextrin with a mass ratio of 1:0.5:0.2.

[0034] The preparation method of iron-copper-carbon composite material is as follows:

[0035] (1) Put the raw materials iron monomer, carbon monomer and copper monomer in a planetary ball mill, add 0.1% talc powder, then add 5 grinding balls of 5mm and 7mm each, set the speed at 300rpm / min, and grind for 3h , to obtain the mixture for later use;

[0036](2) Put the above mixture in a tube furnace, feed nitrogen to avoid explosion due to oxygen incorporation, set the nitrogen flow rate to 300mL / min, raise the temperature to 450°C at a rate of 6°C / min, keep it for 30min, and then increase the temperature at 10°C The heating rate was raised to 700°C ...

Embodiment 2

[0042] The raw material iron monomer of the iron-copper-carbon composite material is 3 parts of ferrous acetate, 1 part of carbon monomer, and 1.9 parts of basic copper carbonate as the copper monomer.

[0043] The carbon monomer is a mixture of ethylenediaminetetraacetic acid, mannitol and β-cyclodextrin with a mass ratio of 4:1:0.5.

[0044] The preparation method of iron-copper-carbon composite material is as follows:

[0045] (1) Put the raw material iron monomer, carbon monomer and copper monomer in a planetary ball mill, add 0.2% talcum powder, then add 5 grinding balls each of 5mm and 7mm, set the speed at 350rpm / min, and mechanically grind 2h, obtain the mixture for subsequent use;

[0046] (2) Put the above mixture in a tube furnace, feed nitrogen to avoid explosion caused by oxygen incorporation, set the nitrogen flow rate to 250mL / min, raise the temperature to 500°C at a rate of 8°C / min, keep it for 30min, and then increase the temperature at 10°C The heating rate...

Embodiment 3

[0052] The raw material iron monomer of the iron-copper-carbon composite material is 3 parts of ferrous acetate, 1 part of carbon monomer, and 3.8 parts of basic copper carbonate for copper monomer. The carbon monomer is a mixture of ethylenediaminetetraacetic acid, mannitol and β-cyclodextrin with a mass ratio of 2:1:0.3.

[0053] The preparation method of iron-copper-carbon composite material is as follows:

[0054] (1) Put the raw materials iron monomer, carbon monomer and copper monomer in a planetary ball mill, add 0.2% talc powder, then add 5 grinding balls of 5mm and 7mm each, set the speed at 300rpm / min, and grind for 4h , to obtain the mixture for later use;

[0055] (2) Put the above mixture in a tube furnace, feed nitrogen to avoid explosion due to oxygen incorporation, set the nitrogen flow rate to 350mL / min, raise the temperature to 500°C at a rate of 6°C / min, keep it for 50min, and then increase the temperature at 10°C The heating rate was increased to 800°C pe...

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Abstract

The invention belongs to the technical field of wastewater treatment, and particularly relates to a nano zero-valent iron-copper-carbon microsphere material and a preparation method thereof. Raw materials of the iron-carbon-copper composite material comprise an iron monomer, a carbon monomer and a copper monomer. The preparation method comprises the following steps of firstly, mixing an iron monomer, a carbon monomer and a copper monomer, mechanically grinding for 2-4 hours, and drying, and calcining to obtain the material. The nano zero-valent iron-copper-carbon microsphere material prepared by the invention provides powerful method support for micro-electrolysis and micro-electrolysis-Fenton-like efficient degradation of water environment pollutants, especially pollutants in chemical wastewater.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to a nanometer zero-valent iron-copper-carbon microsphere material and a preparation method thereof. Background technique [0002] Efficient and rapid removal of pollutants in water, purification of water environment, and reduction of ecological risks are challenges facing current research. At present, the methods used to remove pollutants in water environment include adsorption method, photocatalysis method, Fenton-like method, micro-electrolysis method, biological method, ion exchange method, membrane separation method and other methods. Among many methods, Fenton-like method and micro-electrolysis method are considered to be one of the most effective and easiest removal methods. In the Fenton-like method, H 2 o 2 in Fe 2+ Hydroxyl radicals (·OH) are generated in the presence of OH, which can effectively degrade most pollutants in the water environment...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/745B01J35/10B01J37/08B82Y30/00B82Y40/00C02F1/461C02F1/72C02F101/30
CPCB01J23/745B01J37/088B01J37/082B82Y30/00B82Y40/00C02F1/46176C02F1/725C02F2101/30C02F2305/023B01J35/33B01J35/40B01J35/633B01J35/647B01J35/615Y02W10/37
Inventor 赵晓丽牛琳吴丰昌
Owner GUANGDONG INST OF ECO ENVIRONMENT & SOIL SCI
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