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Method for treating residual atrazine in water body by LaFe(1-x)CuxO3

A technology of atrazine and water body, applied in the direction of water/sewage treatment, chemical instruments and methods, oxidized water/sewage treatment, etc., can solve the problem of low catalytic efficiency, achieve high catalytic efficiency, short reaction time, reduce acid The effect of base adjustment costs

Inactive Publication Date: 2018-12-28
CHINESE RES ACAD OF ENVIRONMENTAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the catalysts currently used have low catalytic efficiency and certain selectivity, which are difficult to meet actual needs.

Method used

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  • Method for treating residual atrazine in water body by LaFe(1-x)CuxO3
  • Method for treating residual atrazine in water body by LaFe(1-x)CuxO3
  • Method for treating residual atrazine in water body by LaFe(1-x)CuxO3

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Example 1: compared the use of LaFe 1-x Cu x o 3 Material activated persulfate, adding LaFe alone 1-x Cu x o 3 materials and the removal rate of atrazine in three ways of adding peroxymonosulfate alone.

[0053] (1) Using LaFe with different doping ratios 1-x Cu x o 3 (LaFeO 3 、LaFe 0.9 Cu 0.1 o 3 、LaFe 0.8 Cu 0.2 o 3 、LaFe 0.7 Cu 0.3 o 3 、LaFe 0.6 Cu 0.4 o 3 、LaFe 0.5 Cu 0.5 o 3 ) In the heterogeneous reaction of material activated potassium hydrogen persulfate, the Erlenmeyer flask is used as the reactor, the waste water reaction volume is 200mL, the treatment condition is that the initial concentration of the waste water containing atrazine is 5.0 mg / L, and the reaction Add LaFe to the bottle 1-x Cu x o 3 The concentrations of the materials and potassium monopersulfate are respectively 0.5 g / L and 0.5 mmol / L, and the reaction bottle is placed in a shaker with a rotation speed of 180 rpm and a temperature of room temperature.

[0054] (2) Ad...

Embodiment 2

[0058] Embodiment 2: compare different LaFe 0.8 Cu 0.2 o 3 Effect of material dosage on the removal rate of atrazine

[0059] (1) Using LaFe 0.8 Cu 0.2 o 3 In the heterogeneous reaction of material catalyst to activate potassium monopersulfate, the Erlenmeyer flask is used as the reactor, the reaction volume of wastewater is 200mL, the treatment conditions are that the initial concentration of atrazine-containing wastewater is 5.0mg / L, and the reaction starts to proceed to the reaction Potassium peroxomonosulfate was added in the bottle to make the concentration 0.5mmol / L, and LaFe was added to the reaction bottle at the same time. 0.8 Cu 0.2 o 3 The material is used to make the reaction concentration 0.25g / L, and finally the reaction bottle is placed in a vibrating bed with a rotation speed of 180rpm, a temperature of room temperature, and a time of 90min.

[0060] (2) In the reaction wastewater LaFe 0.8 Cu 0.2 o 3 The material is 0.75g / L, just adding LaFe 0.8 Cu ...

Embodiment 3

[0062] Example 3: Effects of Different Dosages of Potassium Monopersulfate on Activation and Degradation of Atrazine

[0063] (1) Using LaFe 0.8 Cu 0.2 o 3 In the heterogeneous reaction of catalytically activating potassium monomonosulfate, an Erlenmeyer flask is used as a reactor to process 200 mL of organic wastewater whose initial concentration of atrazine is 5.0 mg / L, and potassium monomonosulfate is added in the reaction flask, Add LaFe to the reaction flask at the same time 0.8 Cu 0.2 o 3 , so that potassium peroxosulfate and LaFe 0.8 Cu 0.2 o 3 The concentrations in the organic wastewater solution were 0.25mmol / L and 0.5g / L respectively, and finally the reaction bottle was placed in a shaker with a rotation speed of 180rpm, a temperature of room temperature, and a time of 90min.

[0064] (2) Only when adding potassium monopersulfate, adjust the dosage of potassium monopersulfate so that the final concentration in the organic wastewater solution is 0.75mmol / L, an...

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Abstract

The invention provides a method for treating residual atrazine in a water body by LaFe(1-x)CuxO3. The method comprises steps as follows: peroxymonosulfate is added to organic wastewater and mixed uniformly, then a LaFe(1-x)CuxO3 material is added and serves as a heterogeneous catalyst, all components are stirred, and atrazine pollutants are degraded accordingly; concentration of peroxymonosulfatein the organic wastewater is 0.25-1 mmol / L. According to the method, LaFe(1-x)CuxO3 is taken as the heterogeneous catalyst and is subjected to a reaction with to-be-treated atrazine in the coexistenceof both LaFe(1-x)CuxO3 and peroxymonosulfate, Fe(III) / Fe(II) and Cu(II) / Cu(I) in the LaFe(1-x)CuxO3 material are taken as main active components and subjected to a contact reaction with peroxymonosulfate, sulfate radicals with strong oxidizing property are produced, atrazine which is difficult to degrade in the water body is degraded by the sulfate radicals, and therefore, the water body is purified.

Description

technical field [0001] The invention belongs to the field of water pollution control, in particular to a LaFe 1-x Cu x o 3 The material is used as a heterogeneous catalyst to activate persulfate to treat residual atrazine in water. Background technique [0002] Atrazine, also known as atrazine, is a long-term and widely used triazine herbicide. Because atrazine has the characteristics of strong water solubility, stable structure and difficult biodegradation, the soil contaminated by atrazine may pollute the surface and groundwater after being washed by rainwater. Atrazine entering the water environment can cause feminization of male frogs, and it has been included in the list of endocrine disrupting compounds in the United States, the European Union and Japan. In addition, atrazine is also considered a compound with a potential carcinogenic risk to humans. Therefore, it is of great significance to study the reduction mode of atrazine in environmental water. [0003] Si...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/72B01J23/83C02F101/30
CPCB01J23/002B01J23/83C02F1/725C02F2101/306
Inventor 夏训峰程成高生旺王丽君朱建超香宝梁兰兰刘阳
Owner CHINESE RES ACAD OF ENVIRONMENTAL SCI
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