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Preparation method and application of tetracycline-polluted water body restoring material

A technology of ethanol aqueous solution and nano-cerium dioxide, which is applied in nanotechnology for materials and surface science, water pollutants, water/sewage treatment, etc., can solve the problems of reducing the reduction and degradation efficiency of nano-zero-valent iron, and achieve easy Promote the use, reduce agglomeration, and improve the removal efficiency

Active Publication Date: 2017-11-07
广州润方环保科技股份有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

For example, nano-zero-valent iron is easy to agglomerate, which will reduce the reduction and degradation efficiency of nano-zero-valent iron to a certain extent.

Method used

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  • Preparation method and application of tetracycline-polluted water body restoring material
  • Preparation method and application of tetracycline-polluted water body restoring material
  • Preparation method and application of tetracycline-polluted water body restoring material

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preparation example Construction

[0034] A preparation method of nano cerium dioxide, comprising the following steps:

[0035] 1) adding cerium nitrate and surfactant into water, mixing and stirring to obtain mixed solution A;

[0036] 2) Add the ammonium carbonate solution into the mixed solution A, stir to obtain the mixed solution B;

[0037] 3) The mixed solution B is filtered, and the obtained precipitate is washed and dried, then calcined and ground into powder to obtain nano ceria.

[0038] Further, step 3) of the preparation method of nano-cerium oxide is specifically as follows: the mixed solution B is filtered and separated, and the white colloid is obtained and washed with ultrapure water and ethanol for 3 times to obtain the white colloid A, and the obtained precipitate after drying is put into Calcined in a muffle furnace and ground into powder to obtain nano ceria.

[0039] Preferably, in step 1) of the method for preparing nano ceria, the mass ratio of cerium nitrate, surfactant and water is (...

preparation example

[0055] A preparation method of nano cerium dioxide particles:

[0056] (1) Add 0.1mol / L cerium nitrate hexahydrate and 4g / L PEG 4000 to 100ml ultrapure water, stir and mix;

[0057] (2) 150ml of 0.1mol / L (NH 4 ) 2 CO 3 The aqueous solution was added to the solution described in step (1), and stirred at 45°C for 15 minutes, filtered and washed several times to obtain white colloidal cerium carbonate;

[0058] (3) Put the white colloid in a drying oven and dry it at 80°C for 8 hours;

[0059] (4) Put the dried white colloid into a muffle furnace, heat up to 500°C at 20°C / min, and roast for 4h. After the temperature of the muffle furnace drops to room temperature, take out the yellow solid and grind it into powder to obtain nanometer 2 Ceria.

[0060] A nano Fe 0 @CeO 2 The preparation method of particle, the step is:

[0061] (1) Add 0.023mol / L nano-cerium dioxide, 0.05mol / L ferrous sulfate hexahydrate, 4g / LPVP prepared above in 100ml30%v / v ethanol aqueous solution; to o...

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Abstract

The invention discloses a preparation method and application of a tetracycline-polluted water body restoring material. A preparation method of nanometer cerium dioxide comprises the following steps of (1) adding cerium nitrate and surfactant into water, mixing and stirring, so as to obtain a mixed solution A; (2) adding an ammonia carbonate solution into the mixed solution A, and stirring, so as to obtain a mixed solution B; (3) filtering the mixed solution B, washing and drying the obtained precipitate, calcining, and grinding into powder, so as to obtain the nanometer cerium dioxide. The invention also discloses a preparation method of the nanometer FeO@CeO2 (ferrous oxide@cerium dioxide) by using the nanometer cerium dioxide, and a restoration method of the tetracycline-polluted water body by using the nanometer FeO@CeO2. A heterogeneous Feton technique using the FeO@CeO2 as a catalyst is proposed to prepare the FeO@CeO2 to be applied into the restoring of the tetracycline pollution in the water body, so that the reaction activity is improved, the mineralizing degree of the tetracycline is improved, and the risk of secondary pollution is reduced.

Description

technical field [0001] The invention relates to a preparation method and application of a tetracycline polluted water restoration material. Background technique [0002] Pharmaceuticals and personal care products (PPCPs) now constitute a new class of world pollutants that have attracted great attention in recent years, including various types of antibiotics, synthetic musk, pain relievers, blood pressure drugs, contraceptives, hypnotics , diet pills, hairspray, hair dye and fungicide, etc. Tetracycline antibiotics are broad-spectrum antibiotics widely used throughout the world in human and veterinary health, in aquaculture, in feed as growth promoters and to inhibit fungal growth in fruit trees. [0003] Traditional tetracycline removal methods are mainly physical adsorption and photodegradation, but physical adsorption cannot completely degrade pollutants, and other methods need to be further selected to achieve complete mineralization, while photodegradation is limited by...

Claims

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Application Information

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IPC IPC(8): B01J23/83C01F17/00C02F1/72C02F1/28C02F1/52B82Y30/00B82Y40/00C02F101/30
CPCB01J23/83B82Y30/00B82Y40/00C01P2004/03C01P2004/04C02F1/281C02F1/5236C02F1/722C02F1/725C02F2101/30C02F2305/026C01F17/206
Inventor 方战强陈俊毅
Owner 广州润方环保科技股份有限公司
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