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Fe modified by a kind of chelating agent vc 3 o 4 Composite material and its preparation method and application of removing antibiotic pollution in water

A composite material and chelating agent technology, applied in the field of water treatment, can solve problems such as limited application, and achieve the effects of improving catalytic activity, improving reaction speed, and large specific surface area

Active Publication Date: 2022-02-11
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Organic chelating agents compete with free radicals in solution, and the secondary pollution problems caused by residual organic chelating agents limit their further application.

Method used

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  • Fe modified by a kind of chelating agent vc <sub>3</sub> o <sub>4</sub> Composite material and its preparation method and application of removing antibiotic pollution in water
  • Fe modified by a kind of chelating agent vc <sub>3</sub> o <sub>4</sub> Composite material and its preparation method and application of removing antibiotic pollution in water
  • Fe modified by a kind of chelating agent vc <sub>3</sub> o <sub>4</sub> Composite material and its preparation method and application of removing antibiotic pollution in water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Chelating agent VC modified Fe 3 o 4 Preparation method of composite material:

[0032] 1) Preparation of Fe 3 o 4 MNPs material: 2.7030g of ferric chloride hexahydrate and 2.7902g of ferrous sulfate heptahydrate were added dropwise to NaOH solution (4M) at a temperature of 80°C for 18min, with a total reaction time of 1.5. After the reaction, the solution was vacuum-dried in an oven at 40°C for 12 hours, and cooled to room temperature naturally to obtain a black solid, which was ground to a black powder, namely Fe 3 o 4 Black powder of MNPs (ferromagnetic nanoparticles).

[0033] 2) Preparation of VC@Fe 3 o 4 MNPs material: mix 1g chelating agent VC with 1g Fe 3 o 4 MNPs were dispersed in 50 mL of deoxygenated water, and the mixed solution was ultrasonically treated for 1 h to 1.5 h. The obtained substance was separated from solid and liquid by magnet, left to stand for 10 minutes, poured off the supernatant, placed in an oven at 40°C for 12 hours in vacuum, ...

Embodiment 2

[0039] Embodiment 2 is identical with embodiment 1 preparation method, and difference is that in step 1) ferric chloride hexahydrate and ferrous sulfate heptahydrate molar ratio are 1:1.2, and step 2) chelating agent VC and Fe 3 o 4 The mass ratio of MNPs is 0.6:1.

Embodiment 3

[0041] Comparative test: using spinel Fe 3 o 4 MNPs catalyze peroxymonosulfate to remove sulfadiazine in water, which is completed in the following steps:

[0042] 1) Preparation of Fe 3 o 4 MNPs material: 2.7030g of ferric chloride hexahydrate and 2.7902g of ferrous sulfate heptahydrate were added dropwise to NaOH solution (4M) at a temperature of 80°C for 18min, with a total reaction time of 1.5. After the reaction, the solution was vacuum-dried in an oven at 40°C for 12 hours, and cooled to room temperature naturally to obtain a black solid, which was ground to a black powder, which was the catalyst Fe 3 o 4 MNPs material.

[0043] 2) Catalyst is mixed with the aqueous solution containing antibiotic: the catalyst that obtains in step 1): Fe 3 o 4 The MNPs material was fully mixed with the water body containing 10mg / L sulfadiazine for 30min; the dosage of the catalyst was 0.8g / L.

[0044] 3) Add peroxymonosulfate: add potassium hydrogen persulfate of specified concen...

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Abstract

The invention discloses a chelating agent VC modified Fe 3 o 4 Composite material and its preparation method and application for removing antibiotic pollution in water, the preparation method comprises the following steps: 1) dropping ferric chloride hexahydrate and ferrous sulfate heptahydrate into alkaline solution, heating for reaction, vacuum drying, and cooling to room temperature , get Fe 3 o 4 Magnetic nanoparticles; 2) chelating agent VC and the Fe obtained in step 1) 3 o 4 MNPs black powder was dispersed in deoxygenated water, ultrasonically treated, solid-liquid separated, supernatant removed, vacuum dried, and cooled to room temperature to obtain chelating agent VC-modified Fe 3 o 4 composite material. Chelating agent VC modified Fe of the present invention 3 o 4 The preparation process of the composite material catalyst is simple and convenient, low in cost, non-polluting, recyclable and regenerated, and can effectively remove sulfadiazine, a typical antibiotic pollutant, with high removal efficiency.

Description

technical field [0001] The invention belongs to the technical field of water treatment, in particular to a chelating agent VC modified Fe 3 o 4 Composite material and its preparation method and application of catalyzed peroxomonosulfate to remove antibiotic pollution in water. Background technique [0002] The production of technical materials for pharmaceuticals and personal care products (PPCPs) in China is increasing rapidly with the development of the economy. According to statistics, in 2013, the production of pharmaceutical raw materials increased to 2.71 million tons. At present, pharmaceutical organic substances have been frequently detected in drinking water sources, water from tap water plants, and tail water from sewage treatment plants, causing long-term potential harm to human health and ecosystems, and causing huge damage to the utilization of water resources. threaten. Phenacetin and paracetamol are typical sulfonamide antipyretic and analgesic drugs, whic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/72B01J31/28C02F101/30C02F101/38
CPCC02F1/725B01J31/28C02F2101/30C02F2101/38C02F2101/40
Inventor 谈超群蹇薪持陆旭徐庆龙董雨婕
Owner SOUTHEAST UNIV
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