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Method for treating organic wastewater by activating peroxymonosulfate with functionalized zirconium-based metal organic framework/protonated carbon nitride composite material

An organic framework and composite material technology, applied in organic compound/hydride/coordination complex catalysts, special compound water treatment, oxidized water/sewage treatment, etc., can solve the problem that the photocatalytic ability of the composite has not been greatly improved , Not suitable for waste water pollutants, the water solution is not easy to disperse and other problems, to achieve the effect of wide application, high treatment effect and rapid removal

Active Publication Date: 2020-02-11
HUNAN UNIV
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Problems solved by technology

About g-C 3 N 4 / UiO-66, most researchers have taken advantage of the facile method, such as the synthesis of g-C by annealing 3 N 4 / UiO-66 composite materials, but the photocatalytic ability of the composite has not been greatly improved, and the composite material obtained by the annealing treatment can completely remove MB under 240min (4h) irradiation of visible light
In addition, existing g-C 3 N 4 / UiO-66 composite material also has problems such as difficult dispersion and poor stability in aqueous solution, so it is not suitable for treating pollutants in wastewater
In addition, existing g-C 3 N 4 / UiO-66 composite material used as a catalyst to activate persulfate to generate sulfate radicals to treat organic wastewater has not yet been reported

Method used

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  • Method for treating organic wastewater by activating peroxymonosulfate with functionalized zirconium-based metal organic framework/protonated carbon nitride composite material
  • Method for treating organic wastewater by activating peroxymonosulfate with functionalized zirconium-based metal organic framework/protonated carbon nitride composite material
  • Method for treating organic wastewater by activating peroxymonosulfate with functionalized zirconium-based metal organic framework/protonated carbon nitride composite material

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Experimental program
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Effect test

Embodiment 1

[0036] A method for activating peroxymonosulfate with a functionalized zirconium-based metal-organic framework / protonated carbon nitride composite material for treating organic wastewater, specifically using a functionalized zirconium-based metal-organic framework / protonated carbon nitride composite material to activate peroxymonosulfuric acid Salt treatment treats methylene blue wastewater, including the following steps:

[0037] Weigh functionalized zirconium-based metal-organic framework / protonated carbon nitride composites (UZCN-0.2, UZCN-0.5, UZCN-1, UZCN-3, UZCN-5, UZCN-8, UZCN-10, UZCN-20) , each 25mg, respectively added to 50mL methylene blue solution with a concentration of 20mg / L (the pH value of the solution is 7.1), stirred with a magnetic stirrer at a speed of 600r / min, dark reaction for 1h, and added 15mg of peroxymonosulfuric acid Potassium hydrogen (PMS) was irradiated by a 150W high-pressure xenon lamp at a temperature of 30°C for a photocatalytic reaction for...

Embodiment 2

[0077] A method for activating peroxymonosulfate with a functionalized zirconium-based metal-organic framework / protonated carbon nitride composite material for treating organic wastewater, specifically using a functionalized zirconium-based metal-organic framework / protonated carbon nitride composite material to activate peroxymonosulfuric acid Salt treatment treats methylene blue wastewater, including the following steps:

[0078] Weigh 5 parts of the functionalized zirconium-based metal-organic framework / protonated carbon nitride composite material (UZCN-0.5) prepared in Example 1, each 25 mg, add 50 mL of methylene blue solution with a concentration of 20 mg / L (the The pH value of the solution is 7.1), stir with a magnetic stirrer under the condition of rotating speed 600r / min, add 5mg, 15mg, 25mg, 35mg, 50mg potassium hydrogen persulfate (PMS) respectively, the hydrogen persulfate in the reaction system The amount of potassium added is 0.1g / L, 0.3g / L, 0.5g / L, 0.7g / L, 1g / L i...

Embodiment 3

[0082] A method for activating peroxymonosulfate with a functionalized zirconium-based metal-organic framework / protonated carbon nitride composite material for treating organic wastewater, specifically using a functionalized zirconium-based metal-organic framework / protonated carbon nitride composite material to activate peroxymonosulfuric acid Salt treatment treats methylene blue wastewater, including the following steps:

[0083] Weigh 5 parts of the functionalized zirconium-based metal-organic framework / protonated carbon nitride composite (UZCN-0.5) prepared in Example 1. , concentration is 20mg / L in the methylene blue solution (the pH value of this solution is 7.1), stir under the condition of rotating speed 600r / min with magnetic stirrer, add 25mg potassium hydrogen persulfate (PMS) respectively, in each reaction system The addition amount of potassium peroxymonosulfate was 0.5g / L, and the photocatalytic reaction was carried out for 60min under the irradiation of a 150W hi...

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Abstract

The invention discloses a method for treating organic wastewater by activating peroxymonosulfate with a functionalized zirconium-based metal organic framework / protonated carbon nitride composite material. According to the invention, the functionalized zirconium-based metal organic framework / protonated carbon nitride composite material is adopted to activate peroxymonosulfate to treat organic wastewater; and the functionalized zirconium-based metal organic framework / protonated carbon nitride composite material takes protonated carbon nitride as a carrier and is doped with UiO-66-NH2. The methodof the invention realizes efficient treatment of organic wastewater by activating peroxymonosulfate with the functionalized zirconium-based metal organic framework / protonated carbon nitride compositematerial, has the advantages of simple process, convenient operation, low cost, wide application range, high treatment effect, good treatment effect and the like, and has very high use value and goodapplication prospects.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and relates to a functionalized zirconium-based metal-organic framework / protonated carbon nitride composite material and a preparation method thereof, and a method for treating organic wastewater by activating persulfate Background technique [0002] With the development of industry, more and more complex, highly toxic, and biodegradable industrial wastewater is discharged into the water environment, which destroys the balance of the water ecological environment. If it is not controlled, the pollution of the water environment will become more and more serious. The advanced oxidation technology based on the generation of a large number of highly active free radicals (such as hydroxyl radical·OH) can better treat organic wastewater pollution. As a strong oxidizing agent, OH is non-selective and can react quickly after contacting with organic macromolecules to achieve the removal of pol...

Claims

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Application Information

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IPC IPC(8): C02F1/30C02F1/72B01J31/22C02F101/36C02F101/38
CPCC02F1/30B01J31/2243C02F1/725C02F2101/40C02F2101/38C02F2101/36C02F2305/10B01J35/39
Inventor 陈明朱萌熙康爽孙映竹
Owner HUNAN UNIV
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