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Method for preparing supported copper catalyst and activating sulfite to degrade pollutants

A technology for activating sulfite and copper catalysts, applied in water pollutants, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problem of narrow applicable pH range of sulfate radicals, complex catalyst preparation, excessive metal ions, etc. problems, achieve rapid and effective degradation, the preparation method is simple and easy to operate, and reduce the effect of leaching loss

Pending Publication Date: 2019-07-19
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Summary of the invention: The present invention is to solve the key problems such as narrow applicable pH range, excessive metal ions, complex catalyst preparation, and high cost in the existing technology for activating sulfite to generate sulfate radicals, and proposes a simple and quick method for preparing the catalyst. And activate sulfite to degrade organic micro-pollutants in water

Method used

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  • Method for preparing supported copper catalyst and activating sulfite to degrade pollutants
  • Method for preparing supported copper catalyst and activating sulfite to degrade pollutants
  • Method for preparing supported copper catalyst and activating sulfite to degrade pollutants

Examples

Experimental program
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Embodiment example 1

[0028] (1) Stir and dissolve a certain amount of copper nitrate trihydrate, and then use nitric acid to adjust the pH value of the copper nitrate solution to about 1;

[0029] (2) Slowly add natural zeolite to the above solution, the mass ratio of copper nitrate trihydrate to natural zeolite is 1:100, and stir properly at the same time to ensure that the zeolite is completely immersed in the solution, and stir for 12 hours;

[0030] (3) Then slowly add ammonia water dropwise to the mixed solution of (2), slowly raise the pH value of the reaction solution to 10, let it stand for 300 minutes, filter and separate, and then use distilled water to wash the zeolite to neutrality to obtain the prepared good catalyst;

[0031] (4) Put the washed catalyst in an oven at 40°C to dry for 24 hours, then collect the catalyst for later use;

[0032] (5) Adjust the pH value of the domestic sewage water sample containing 2 µM 4-bromophenol to 8;

[0033] (6) Add sodium sulfite solution to th...

Embodiment example 2

[0036] In the specific implementation case 2, the pH value of the domestic sewage water sample in step (5) is adjusted to a value among 6, 7, 9, 10, and 11, and the other steps are exactly the same as the implementation case 1.

[0037] In this implementation case, a method for preparing a supported copper catalyst and activating sulfite to degrade pollutants has the degradation effect on 4-bromophenol at different pHs as shown in the attached figure 2 shown, from the attached figure 2 It can be seen that under the relevant pH conditions of the water environment (pH 7-9), a method of preparing a supported copper catalyst and activating sulfite to degrade pollutants has a good removal effect on 4-bromophenol.

Embodiment example 3

[0039] In the specific implementation example 3, the copper nitrate trihydrate in the step (1) is replaced with copper sulfate pentahydrate, or a kind of copper chloride, and the other steps are exactly the same as the implementation example 1.

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Abstract

The invention discloses a method for preparing a supported copper catalyst and activating sulfite to degrade pollutants. SO3<2-> is activated through a supported Cu<2+> catalyst to generate SO4<--> todegrade pollutants. The method for preparing the supported Cu<2+> catalyst comprises the following steps: dissolving a Cu<2+> compound, and then adjusting the pH value of a salt solution to be 3 or below; adding a carrier into the solution, and fully stirring and reacting for 4-24 hours; adding a strong base solution into the mixed solution, slowly increasing the pH value to be 10, standing for 300 min, filtering and separating, washing to neutrality, and drying for later use. SO3<2-> is activated to generate SO4<--> by using the prepared catalyst to rapidly degrade the pollutants. The methodfor preparing the catalyst is simple and convenient, and the preparation cost is low; the solid granular catalyst can be recycled after reaction, meanwhile, leaching loss of Cu<2+> and the residue ina water sample are effectively reduced, and the risk that Cu<2+> exceeds the standard is avoided. Meanwhile, the key problems of narrow pH range, metal ions exceeding the standard, complicated in catalyst preparation and the like in an existing technology for activating SO3<2->to generate SO4<-->are solved.

Description

technical field [0001] The invention relates to the field of water pollution treatment, and in particular relates to the preparation of a supported bivalent copper catalyst and its method for activating sulfite to oxidize and degrade emerging pollutants. Background technique [0002] With the rapid development of my country's economy and the surge of population, a large number of various chemical organic pollutants, including personal care products and pharmaceuticals, endocrine disruptors, pesticides, etc., are discharged into water bodies. The current United Nations Environmental Protection Organization's relevant reports on global water environment issues point out that in addition to eutrophication (nitrogen and phosphorus pollution), a new water environment problem is organic compound pollution. Organic pollutants in water will not only affect the safety of the ecological environment but also pose a great threat to human health, so it is very necessary to remove organic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/72C02F1/70C02F101/34
CPCB01J23/72C02F1/70C02F2101/345
Inventor 孙绍芳邱立平张守彬王嘉斌谢康刘贵彩高明昌
Owner UNIV OF JINAN
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