A method based on iron-doped ordered mesoporous cobalt tetroxide to activate monopersulfate to degrade antibacterial drugs in water

A technology of tricobalt tetroxide and persulfate, applied in chemical instruments and methods, oxidized water/sewage treatment, water pollutants, etc., can solve catalysts (difficult recovery of transition metal ions, low catalytic capacity, complex catalyst recovery operations, etc.

Active Publication Date: 2019-07-26
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a magnetic TOM-Co based on iron-doped ordered mesoporous cobalt tetroxide 3 o 4 / CoFe 2 o 4 The method of activating monopersulfate to degrade antibacterial drugs in water aims to solve the problem of difficult recovery of catalysts (transition metal ions) in the homogeneous monopersulfate activation system and easy to cause secondary pollution of the environment; solve the current heterogeneous phase Spinel-type catalysts have small specific surface area and low catalytic ability; and heterogeneous TOM-Co 3 o 4 Complexity of Catalyst Recovery Operations in Activated Monopersulfate Systems

Method used

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  • A method based on iron-doped ordered mesoporous cobalt tetroxide to activate monopersulfate to degrade antibacterial drugs in water
  • A method based on iron-doped ordered mesoporous cobalt tetroxide to activate monopersulfate to degrade antibacterial drugs in water
  • A method based on iron-doped ordered mesoporous cobalt tetroxide to activate monopersulfate to degrade antibacterial drugs in water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] 1. Preparation of TOM-Co 3 o 4 :

[0043] Grind the template KIT-6 fully and add it to Co(NO 3 ) 2 ·6H 2 O solution, stirred at room temperature for 1 h to obtain solution A;

[0044] step one Template KIT-6, Co(NO 3 ) 2 ·6H 2 The molar ratio of O is 1:1;

[0045] step one The solution described in takes ethanol as solvent;

[0046] step one Co(NO 3 ) 2 ·6H 2 The molar concentration of O solution is 0.8 mol / L;

[0047] will step one The obtained solution A was air-dried at 60°C to obtain a pink solid powder, which was transferred to a crucible, and placed in a muffle furnace for 5 h at 200°C. The muffle furnace The heating rate is 2 ℃ / min;

[0048] will step one The brown solid powder after medium-baking is fully ground and added to Co(NO 3 ) 2 ·6H 2 O solution, stirred at room temperature for 1 h to obtain solution B;

[0049] step one The solution described in takes ethanol as solvent;

[0050] step one Co(NO 3 ) 2 ·6H 2 Th...

Embodiment 2

[0076] The difference between this embodiment and Example 1 is that the concentration of the target pollutant ciprofloxacin in Step 3 is 5-10 mg / L, and other steps and parameters are the same as in Example 1.

Embodiment 3

[0078] The difference between this embodiment and Example 1 is that the concentration of the target pollutant ciprofloxacin in Step 3 is 10-20 mg / L, and other steps and parameters are the same as in Example 1.

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Abstract

The invention discloses a method for degrading an antibacterial drug in water based on iron-doped ordered mesoporous cobalt tetroxide-activated monopersulfate. The method is implemented by the following specific steps: preparing TOM-Co3O4; preparing magnetic TOM-Co3O4 / CoFe2O4; thoroughly mixing the magnetic TOM-Co3O4 / CoFe2O4 and an antibacterial drug-containing water solution, and transferring to a brown shake flask; adding the monopersulfate; separating the magnetic TOM-Co3O4 / CoFe2O4 by using an external magnetic field. By the method provided by the invention, the removal rate of the typical antibacterial drug ciprofloxacin within 60 min exceeds 95%; the dissolution rate of cobalt ions and iron ions is very low, so that the environmental pollution is reduced; a catalyst can be separated for reuse, so that the operating cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and specifically relates to a treatment method for emerging organic pollutants and refractory organic pollutants in water, in particular to a method for degrading antibacterial drugs in water based on iron-doped ordered mesoporous cobalt tetroxide activating monopersulfate. Background technique [0002] In recent years, Pharmaceuticals and Personal Care Products (PPCPs) have become an emerging environmental pollutant, which has been detected in groundwater, surface water, soil and other environmental media, and has been proved to be harmful to the environment and human beings. Health hazard. Ciprofloxacin (CIP) is a quinolone antibacterial drug widely used in the treatment of human and animal diseases. After the residual ciprofloxacin enters the human body, it will cause toxic and side effects to the human body and greatly enhance the drug resistance of human pathogenic bacteria. On th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/72C02F1/28B01J27/02B01J35/10C02F101/30
CPCB01J27/02B01J35/1004C02F1/281C02F1/725C02F2101/30C02F2305/02
Inventor 邓靖冯善方李军马晓雁卢遇安陈一婧
Owner ZHEJIANG UNIV OF TECH
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