Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation of zero-valent iron supported MC (mesoporous carbon) composite and method for degrading sulfachloropyridazine by persulfate activation based on zero-valent iron supported MC (mesoporous carbon) composite

A technology of sulfamethazine and composite materials, which is applied in chemical instruments and methods, other chemical processes, chemical/physical processes, etc., can solve problems such as biological toxicity, secondary pollution, and catalysts that are not easy to recycle and reuse, and achieve no The effect of secondary pollution, enhanced adsorption and degradation, and broad practical application prospects

Inactive Publication Date: 2018-08-03
HENAN UNIVERSITY OF TECHNOLOGY
View PDF7 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many ways to activate persulfate to generate sulfate radicals, among which the widely used homogeneous catalyst——Fe 2+ Although the activated persulfate method has various advantages such as high oxidation efficiency, strong oxidation ability, good selectivity and wide application range, it also has disadvantages such as catalysts are not easy to recycle and reuse, and it is easy to cause secondary pollution and biological toxicity.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation of zero-valent iron supported MC (mesoporous carbon) composite and method for degrading sulfachloropyridazine by persulfate activation based on zero-valent iron supported MC (mesoporous carbon) composite
  • Preparation of zero-valent iron supported MC (mesoporous carbon) composite and method for degrading sulfachloropyridazine by persulfate activation based on zero-valent iron supported MC (mesoporous carbon) composite
  • Preparation of zero-valent iron supported MC (mesoporous carbon) composite and method for degrading sulfachloropyridazine by persulfate activation based on zero-valent iron supported MC (mesoporous carbon) composite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] In this example, the adsorption efficiency of mesoporous carbon and mesoporous carbon-supported zero-valent iron composite materials under different material dosages was investigated.

[0032] Mesoporous carbon material: put 25g of PVA and 25g of magnesium carbonate in a mortar, mix and grind evenly, and then pass the mixture through a 200-mesh sieve; put the resulting mixture in a tube furnace and raise the temperature to 900°C at 5°C / min, and keep it for 2h, the whole process was protected under a nitrogen atmosphere with a flow rate of 70mL / min; the resulting product was washed three times with 1mol / L dilute sulfuric acid and deionized water, and the concentration of magnesium ions in the solution was measured to make it close to zero. At this time, the solution was Neutral; centrifuge with a high-speed centrifuge (10,000 rpm) to obtain a solid; place the obtained solid in a constant temperature drying oven and dry at 105° C. to obtain a mesoporous carbon material, wh...

Embodiment 2

[0041] This example compares the effect of activated sodium persulfate on the removal rate of sulfamethazine under the conditions of different dosages of mesoporous carbon-loaded zero-valent iron composite materials.

[0042] The preparation method of the mesoporous carbon material and the mesoporous carbon-loaded zero-valent iron composite material involved in this example is the same as that of Example 1.

[0043] The prepared mesoporous carbon-supported zero-valent iron composite material was used as the catalyst, and its dosage was 0, 0.0308, 0.0616, 0.0924 and 0.1232 g, which were respectively recorded as systems 1, 2, 3, 4 and 5; sulfamethazine As the target pollutant, the initial concentration of the aqueous solution is 50mg / L, and the volume is 100mL; the mass of sodium persulfate is 0.0476g, the reaction temperature is 30°C, the pH is not adjusted, and the conical flask is used as the reactor. Place it in a constant temperature oscillator and vibrate for a certain per...

Embodiment 3

[0049] This embodiment compares the influence of different qualities of the oxidizing agent sodium persulfate on the degradation rate of sulfamethazine.

[0050] The preparation method of the mesoporous carbon material and the mesoporous carbon-loaded zero-valent iron composite material involved in this example is the same as that of Example 1.

[0051] Utilize the prepared mesoporous carbon loaded zero-valent iron composite material as catalyst, its dosage is 0.0616g, sulfamethazine is target pollutant, the initial concentration of its aqueous solution is 50mg / L, and volume is 100mL; Sodium persulfate The masses are 0, 0.0119, 0.0238, 0.0476, 0.0714 and 0.1190g respectively, which are respectively recorded as systems 1, 2, 3, 4, 5 and 6; the reaction temperature is 30°C, the pH is not adjusted, and the conical flask is used as the reactor . Place it in a constant temperature oscillator and vibrate for a certain period of time, take samples at 15, 30, 45, 60, 75 and 90 minute...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a preparation method of a zero-valent iron supported MC (mesoporous carbon) composite and a method for degrading sulfachloropyridazine by sulfate radicals produced by persulfate activation. The zero-valent iron supported MC composite is prepared with a liquid-phase reduction method, and zero-valent iron is efficiently and uniformly supported on the basis of the larger specific surface area and more pore structures of MC. According to the method, sodium persulfate is activated efficiently and continuously by using the synergistic effect of adsorption and catalysis of theprepared composite, sulfate radicals are produced for degrading sulfachloropyridazine, and degradation effect of sulfachloropyridazine is improved. The composite has higher stability and can still maintain higher activity after repeated recycling. With adoption of the method for treating non-biodegradable sulfanilamide antibiotic wastewater, especially sulfamethazine-containing antibiotic wastewater, biodegradability of the antibiotic wastewater can be improved, and the composite has the advantages of being environmentally friendly, simple and convenient to operate, high in catalytic activity, good in recyclability and the like, and has a wide application prospect.

Description

technical field [0001] The invention belongs to the technical field of catalytic oxidation treatment of sulfamethazine, a typical sulfonamide antibiotic, and specifically relates to a method for preparing a mesoporous carbon-loaded zero-valent iron composite material and activating persulfate to generate sulfate radicals to degrade sulfa Dimethylpyrimidine method. Background technique [0002] Antibiotics, as a kind of biodegradable organic matter, already exist in surface water and sewage treatment plant effluent in many countries. After organisms ingest antibiotics, most of them will be excreted into the environment in the form of unchanged or metabolites. my country is a big country in the production and use of antibiotics, and the residues of various antibiotics in urban sewage are much higher than those in other countries, especially sulfonamide antibiotics. The maximum concentrations of the five sulfonamide antibiotics in urban sewage in my country are all above 1500...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B01J20/20B01J20/28B01J23/745B01J35/10B01J37/08B01J37/16C02F1/28C02F1/72C02F101/38
CPCB01J20/0229B01J20/20C02F1/281C02F1/283C02F1/725B01J20/28054B01J20/28083B01J23/745B01J37/084B01J37/16C02F2101/40B01J35/64
Inventor 张良波刘永德万东锦张宝忠祝慧娜李莹申思远
Owner HENAN UNIVERSITY OF TECHNOLOGY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com