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Method for degrading organic pollutants by activating persulfate with multistage mesoporous biochar material

A technology of organic pollutants and persulfate, which is applied in the restoration of water pollutants, polluted soil, and water/sewage treatment, etc. It can solve the problems of unsatisfactory material cycle performance, metal infiltration pH range, and low catalytic efficiency. , to achieve the effect of rich oxygen doping content, fast and efficient adsorption, and improved adsorption and catalytic performance

Active Publication Date: 2021-03-05
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, traditional advanced oxidation techniques like the Fenton reaction and the widely used reactions based on metal and oxide catalysts have many defects (a large amount of precipitation, metal infiltration and too narrow pH range, etc.)
The use of carbon materials (reduced graphene oxide, carbon nanotubes, activated carbon, nano-diamond and mesoporous carbon) to activate persulfate technology developed in recent years can solve the problems of traditional technologies; however, many carbon materials are faced with catalytic performance. Poor, low catalytic efficiency and high production cost, and the material cycle performance is not ideal

Method used

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  • Method for degrading organic pollutants by activating persulfate with multistage mesoporous biochar material
  • Method for degrading organic pollutants by activating persulfate with multistage mesoporous biochar material
  • Method for degrading organic pollutants by activating persulfate with multistage mesoporous biochar material

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Effect test

Embodiment 1

[0037] A method for activating persulfate to degrade organic pollutants using a multi-level mesoporous biochar material, specifically: using a multi-level mesoporous biochar material to activate sodium persulfate to degrade phenol in water, comprising the following steps:

[0038] According to the mass concentration ratio of the multi-level mesoporous biochar material and the phenol in the phenol solution is 3.3:1 (that is, the ratio of the mass concentration of the multi-level mesoporous biochar and phenol in the reaction system, such as the multi-level mesoporous biochar material in the system The initial mass concentration of phenol is 3.3mg / L, so the initial mass concentration of phenol in the system is 1mg / L) and the mass concentration ratio of phenol in sodium persulfate and phenol solution is 50: 1 (that is, sodium persulfate and phenol in the reaction system The ratio of the mass concentration, such as the initial mass concentration of sodium persulfate in the system is...

Embodiment 2

[0066] A method for activating persulfate to degrade organic pollutants using a multi-level mesoporous biochar material, specifically: using a multi-level mesoporous biochar material to activate sodium persulfate to degrade phenol in water, comprising the following steps:

[0067] According to the mass concentration ratio of multi-level mesoporous biochar material and phenol in phenol solution is 3.3:1 and the mass concentration ratio of sodium persulfate and phenol in phenol solution is 50:1, the multi-level media prepared in Example 1 The porous biochar material (Ca / BS-KOH) and sodium persulfate were added to the phenol solution (the The solution contains 0.6 mg of phenol), and the degradation treatment was carried out at 200 rpm for 180 minutes. During the treatment process, the adsorption and oxidation degradation were carried out simultaneously, and the degradation of phenol was completed. The degradation effects corresponding to 25°C, 30°C, and 35°C are as follows: Fig...

Embodiment 3

[0073] Investigate the anti-interference ability when using multi-level mesoporous biochar material to activate sodium persulfate to degrade phenol in water, including the following steps:

[0074] According to the concentration ratio of phenol in the multilevel mesoporous biochar material and the phenol solution is 3.3: 1 and according to the concentration ratio of the phenol in the persulfate and the phenol solution is 50: 1, the multilevel mesoporous material prepared in embodiment 1 Biochar materials (Ca / BS-KOH) and sodium persulfate were added to natural water bodies containing a variety of organic matter (four sampling points in the Xiangjiang River water body, and the corresponding degradation effects of these four water samples were as follows: Figure 7 "Water sample 1", "Water sample 2", "Water sample 3", "Water sample 4" curves) and soil samples (Xiangjiang wetland soil, a total of 3 soil samples, their corresponding degradation effects are as follows Figure 7 "m(wat...

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Abstract

The invention discloses a method for degrading organic pollutants by activating persulfate with a multi-stage mesoporous biochar material. The method adopts the multi-stage mesoporous biochar materialand persulfate to treat organic pollutants, wherein the multi-stage mesoporous biochar material is prepared by taking bagasse as a raw material, mixing the bagasse with calcium chloride and potassiumhydroxide and then calcining. According to the method for degrading the organic pollutants by activating the persulfate through the multistage mesoporous biochar material, the organic pollutants canbe effectively removed, and the method has the advantages of being easy to operate, short in period, low in cost, high in degradation efficiency, good in removal effect, high in anti-interference capacity, wide in application range, easy to recycle and reuse and the like. The method has a good application prospect in actual treatment of organic pollutant wastewater and natural water and soil polluted by organic pollutants.

Description

technical field [0001] The invention belongs to the field of advanced oxidation treatment of organic pollutants, and relates to a method for using biomass materials to activate persulfate to degrade organic pollutants, and in particular to a method for using multi-level mesoporous biochar materials to activate persulfate to degrade organic pollutants way of things. Background technique [0002] The problem of water and soil environmental pollution caused by organic pollutants has become increasingly serious, which has aroused widespread concern from researchers and society. The organic pollutants represented by phenol are inevitably discharged into the water and soil environment during its industrial application, and the wastewater containing phenol is highly toxic; and the intermediate products produced in the process of phenol degradation will also have relatively high High toxicity, with carcinogenic, mutagenic and teratogenic properties, poses a great threat to water pl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/72B09C1/08B01J35/10B01J21/18C02F101/30
CPCC02F1/725B09C1/08B01J21/18C02F2101/30B01J35/618B01J35/617B01J35/615B01J35/638B01J35/635B01J35/633B01J35/647
Inventor 汤琳张浩王佳佳余江芳冯浩朋刘雅妮
Owner HUNAN UNIV
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