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Magnetic MOFs adsorbent material for adsorbing antibiotics in water body

An adsorption material and antibiotic technology, which is applied in the fields of adsorbing water/sewage treatment, water pollutants, water/sludge/sewage treatment, etc., can solve the problems such as the need to improve the adsorption performance, the cumbersome recovery process of the adsorbent, and the poor recyclability. Achieve high porosity, good adsorption performance, and improve adsorption performance

Inactive Publication Date: 2018-01-12
ZHEJIANG OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The prior art such as the Chinese invention patent application whose application publication number is CN 106423064 A discloses a magnesium-modified biomass and its application. The application uses biomass and magnesium sulfate solution as raw materials to prepare an adsorbent, and the adsorbent It has a certain adsorption effect on antibiotics, but the recovery process of the adsorbent is cumbersome, the recyclability is poor, and the adsorption performance needs to be improved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] A magnetic MOFs adsorption material for adsorbing antibiotics in water body includes the following steps:

[0014] 1) Magnetic Fe 3 O 4 Granule preparation: add 10 parts FeCl to 400 parts ethylene glycol 3 ·6H 2 O, 30 parts of sodium acetate and 30 parts of polyvinylpyrrolidone, stir for 6h, transfer the mixture to a stainless steel crystallization kettle with polytetrafluoroethylene lining, stir at 200℃, 400r / min, cool to room temperature, Centrifuge at 10000r / min for 10min, wash alternately with ethanol and deionized water, and vacuum dry at 60℃ for 12h to obtain magnetic Fe 3 O 4 Particles. Fe prepared under this condition 3 O 4 They are uniform spherical particles with strong superparamagnetism. Without the action of an external magnetic field, the force between the particles themselves is very small, and the dispersion performance in the water body is good. Under the action of an external magnetic field, they will quickly aggregate and are easy to Separation from wate...

Embodiment 2

[0018] A magnetic MOFs adsorption material for adsorbing antibiotics in water, including the following steps: firstly, magnetic Fe 3 O 4 Granule preparation: add 11 parts of FeCl to 420 parts of ethylene glycol 3 ·6H 2 O, 32 parts of sodium acetate and 35 parts of polyvinylpyrrolidone, stirring for 8h, transfer the mixed solution to a stainless steel crystallization kettle, stir at 205℃, 400r / min, cool to room temperature, separate, wash, and vacuum dry to obtain magnetic Fe 3 O 4 Particles; followed by SiO 2 @Fe 3 O 4 Preparation of magnetic carrier: take 0.15 part of magnetic Fe 3 O 4 For granules, add 70 parts of ethanol, 23 parts of deionized water, 1.3 parts of ammonia, 0.2 parts of dodecylamine and 0.2 parts of pinacol, sonicate for 35 minutes, then add 32 parts of ethyl orthosilicate, stir at room temperature for 7 hours, separate, Vacuum dried to get SiO 2 @Fe 3 O 4 Magnetic carrier; finally the magnetic MOFs adsorption material UiO-66@SiO 2 @Fe 3 O 4 Preparation: Add 2.15...

Embodiment 3

[0020] A magnetic MOFs adsorption material for adsorbing antibiotics in water, including the following steps: first, magnetic Fe 3 O 4 Granule preparation: add 10 parts FeCl to 410 parts ethylene glycol 3 ·6H 2 O, 31 parts of sodium acetate and 33 parts of polyvinylpyrrolidone, stir for 7h, transfer the mixed solution to a stainless steel crystallization kettle, stir at 204℃, 400r / min, cool to room temperature, separate, wash, vacuum dry to obtain magnetic Fe 3 O 4 Particles; followed by SiO 2 @Fe 3 O 4 Preparation of magnetic carrier: take 0.12 part of magnetic Fe 3 O 4 For granules, add 66 parts of ethanol, 21 parts of deionized water, 1.2 parts of ammonia water, ultrasonic for 32 minutes, then add 31 parts of ethyl orthosilicate, stir at room temperature for 6.5h, separate, and vacuum dry to obtain SiO 2 @Fe 3 O 4 Magnetic carrier; finally the magnetic MOFs adsorption material UiO-66@SiO 2 @Fe 3 O 4 Preparation: Add 2.12 parts of SiO to 9.5 parts of dimethylformamide 2 @Fe 3 O 4...

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Abstract

The invention discloses a magnetic MOFs adsorbent material for adsorbing antibiotics in a water body. A preparation process for the material comprises the following steps: preparing magnetic Fe3O4 particles; preparing a SiO2@Fe3O4 magnetic carrier; and preparing the magnetic MOFs adsorbent material UiO-66@SiO2@Fe3O4. The magnetic MOFs adsorbent material has the beneficial effects that: the magnetic carrier is added into an MOFs precursor solution, so that the magnetic MOFs adsorbent material is formed; the material has good adsorbing performances on antibiotics in the water body, has certain superparamagnetism, and has very great advantages in separating, recycling and repeatedly using the adsorbent; and a plasma technology is used to treat terephthalic acid, so that the prepared adsorbentmaterial has relatively high porosity; and a great number of carboxyl groups serving as function groups are formed on the surface of the material, so that the adsorbing performances, on antibiotics,of the adsorbent material are greatly improved.

Description

Technical field [0001] The invention belongs to the application field of environmental protection materials, and particularly relates to a magnetic MOFs adsorption material for adsorbing antibiotics in water. Background technique [0002] As a new type of environmental pollutant, antibiotics have been highly valued by the United States, Canada, the European Union and other countries and regions, and have gradually become a research hotspot. In clinical practice, quinolones have surpassed penicillins and become the second largest antibacterial drugs, mainly antibiotics. According to the literature at home and abroad in recent years, there have been reports of antibiotic residues at different concentrations in various environmental media such as urban sewage, surface water, drinking water, and groundwater. The environmental risks caused by antibiotic residues mainly include the following three aspects: (1) Improve microbial resistance, which indirectly affects human health; (2) Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01J20/30C02F1/28C02F101/36C02F101/38
Inventor 杨立业欧阳小琨王南
Owner ZHEJIANG OCEAN UNIV
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