Method for treating organic pollutants in water by catalyzing persulfate through heterogeneous copper oxide

A technology of organic pollutants and copper oxides, applied in the field of environmental pollution control, can solve problems such as complex technical processes, incomplete removal of organic pollutants, and difficult treatment, achieving high removal efficiency, easy control, and simple operation methods Effect

Inactive Publication Date: 2013-10-30
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existing heterogeneously catalyzed persulfate technology is relatively complex, limited by conditions such as high pressure, high temperature, and ultraviolet light, and the adsorption of activated carbon prevents the complete removal of organic pollutants, and there are still certain difficulties in subsequent treatment.

Method used

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  • Method for treating organic pollutants in water by catalyzing persulfate through heterogeneous copper oxide
  • Method for treating organic pollutants in water by catalyzing persulfate through heterogeneous copper oxide
  • Method for treating organic pollutants in water by catalyzing persulfate through heterogeneous copper oxide

Examples

Experimental program
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Effect test

Embodiment 1

[0024] like figure 1 Shown, adopt the method of the present invention to handle the waste water that contains low-concentration p-chloroaniline.

[0025] Preparation of heterogeneous copper oxide: trihydrate and copper nitrate were calcined at 150° C. for 1 h, then calcined at 300° C. for 4 h, and cooled to room temperature.

[0026] Add 100 mL of aqueous solution containing a small amount of p-chloroaniline to the reactor, wherein the initial concentration of p-chloroaniline is 50 μmol / L; add sodium persulfate and heterogeneous copper oxide to the reactor, so that the initial concentration of sodium persulfate is 2.5 mmol / L, the initial concentration of the heterogeneous copper oxide is 0.1g / L; the heterogeneous copper oxide catalyzes sodium persulfate to generate sulfuric acid radicals, and the sulfuric acid radicals oxidize and degrade trace amounts of p-chloroaniline in water.

[0027] The effect of treatment was detected by high performance liquid chromatography, such as...

Embodiment 2

[0030] like figure 1 Shown, adopt the method of the present invention to handle the waste water that contains higher concentration p-chloroaniline.

[0031] Preparation of heterogeneous copper oxide: trihydrate and copper nitrate were calcined at 200°C for 0.5h, then calcined at 350°C for 3h, and cooled to room temperature.

[0032]Add 100mL of aqueous solution containing p-chloroaniline in the reactor, wherein the initial concentration of p-chloroaniline is 500 μ mol / L; Add sodium persulfate and heterogeneous copper oxide in the reactor, make the initial concentration of sodium persulfate be 2.5mmol / L, the initial concentration of the heterogeneous copper oxide is 0.5g / L; the heterogeneous copper oxide catalyzes sodium persulfate to generate sulfuric acid radicals, and the sulfuric acid radicals oxidize and degrade p-chloroaniline with a higher concentration in water.

[0033] Use high-performance liquid chromatography to detect the treatment effect, at 25 ° C, such as fi...

Embodiment 3

[0036] like figure 1 Shown, adopt the method of the present invention to process the waste water that contains higher concentration aniline.

[0037] Preparation of heterogeneous copper oxide: trihydrate and copper nitrate were calcined at 150° C. for 1 h, then calcined at 300° C. for 4 h, and cooled to room temperature.

[0038] Add 100mL of aqueous solution containing aniline in the reactor, wherein the initial concentration of aniline is 2.5mmol / L; Add sodium persulfate and heterogeneous copper oxide in the reactor, make the initial concentration of sodium persulfate be 25mmol / L, not The initial concentration of homogeneous copper oxides was 2.0g / L; heterogeneous copper oxides catalyzed sodium persulfate to generate sulfuric acid radicals, and sulfuric acid radicals oxidized and degraded aniline with a higher concentration in water.

[0039] The effect of treatment was detected by high performance liquid chromatography, such as image 3 As shown, at 25°C, the degradation ...

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Abstract

The invention discloses a method for treating organic pollutants in water by catalyzing persulfate through heterogeneous copper oxide. At room temperature, the persulfate and the heterogeneous copper oxide are added in water containing the organic pollutants, so that the persulfate generates sulfuric acid free radicals with strong oxidizing property under effect of the heterogeneous copper oxide, the sulfuric acid free radicals further oxidize trace-amount refractory organic matters in water so as to lead the organic matters to be degraded, and accordingly the aim of purifying organic sewage is achieved. The heterogeneous copper oxide added in the method can constantly and effectively catalyze and activate the persulfate to generate the sulfuric acid free radicals so as to oxidize and degrade the organic pollutants at room temperature, and the method is wide in potential of hydrogen (pH) applicable range and can have good effect in neutral and alkaline water. The method for treating organic pollutants in water by catalyzing persulfate through heterogeneous copper oxide is low in cost, high in treating efficiency at room temperature and easy to operate and has great potential in the technical field of refractory organic sewage treatment.

Description

technical field [0001] The invention belongs to the technical field of environmental pollution control, and relates to deep oxidation treatment and advanced oxidation technology of organic matter in water, in particular to a method for treating organic pollutants in water with heterogeneous copper oxide catalyzed persulfate. Background technique [0002] At present, the methods for treating wastewater containing organic pollutants mainly include physical treatment, biological treatment and chemical oxidation. The physical treatment method does not achieve the removal of pollutants in essence, but only transfers the pollutants from the liquid phase to the solid phase or gas phase, which is easy to cause secondary pollution, and it is difficult to realize the deep treatment of organic wastewater in the true sense; the biological treatment method Although there are advantages such as simple equipment and low operating costs, there are also disadvantages such as long operating ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/72C02F101/30
Inventor 张永清梁海云黄少斌艾姆提亚兹胡赛因
Owner SOUTH CHINA UNIV OF TECH
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