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Method for treating pesticide wastewater by recycling of graphene-based adsorbing material

An adsorption material, graphene-based technology, applied in adsorption water/sewage treatment, water/sewage treatment, chemical instruments and methods, etc.

Inactive Publication Date: 2019-11-08
CHANGCHUN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The problem to be solved by the present invention is to use graphene-based adsorption materials to treat pesticide sewage and to recycle the graphene-based adsorption materials, and to reuse them. Adsorption and removal of substances, improving the utilization efficiency of adsorbents and reducing costs

Method used

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  • Method for treating pesticide wastewater by recycling of graphene-based adsorbing material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 1 Preparation of graphene-based adsorbent:

[0022] Add 0.6 g flake graphite and 1.0 g sodium nitrate to 35 ml concentrated sulfuric acid. Slowly add 3.0 g of potassium permanganate under constant stirring, and stir the reactant in a water bath at 5° C. for 2 hours. Subsequently, 150 ml of deionized water was slowly added to the reactant, and after the addition was completed, the temperature was raised to 98°C. The reaction solution was slowly added to 200 ml of preheated deionized water, and 10 ml of 30% hydrogen peroxide was added under stirring. Bubbles were generated during the transition from black to bright yellow in the dispersion. Centrifuge with a centrifuge to remove the residue to obtain a graphene oxide dispersion. The pH of the dispersion was brought to 7. Freeze drying dries the graphene oxide to a solid.

[0023] 2. The sewage is insecticide pesticide, chlorpyrifos.

[0024] Put 0.005 g-0.5 g of graphene oxide into solutions of different concentrati...

Embodiment 2

[0031] 1 Preparation of graphene-based adsorbent:

[0032] Add 0.6 g flake graphite and 1.0 g sodium nitrate to 35 ml concentrated sulfuric acid. Slowly add 3.0 g of potassium permanganate under constant stirring, and stir the reactant in a water bath at 5° C. for 2 hours. Subsequently, 150 ml of deionized water was slowly added to the reactant, and after the addition was completed, the temperature was raised to 98°C. The reaction solution was slowly added to 200 ml of preheated deionized water, and 10 ml of 30% hydrogen peroxide was added under stirring. Bubbles were generated during the transition from black to bright yellow in the dispersion. Centrifuge with a centrifuge to remove the residue to obtain a graphene oxide dispersion. The pH of the dispersion was brought to 7. Freeze drying dries the graphene oxide to a solid.

[0033] 2. The sewage is herbicide pesticide, hydroquinone.

[0034] 0.002 g-0.005 g of graphene oxide were placed in solutions of different conce...

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Abstract

The invention relates to a method for treating pesticide wastewater by recycling of a graphene-based adsorbing material. The corresponding adsorbing material is prepared by utilizing the characteristic that graphene and a derivative of the graphene contain a large number of movable Pi-electrons and a large specific surface area to adsorb related pesticide pollutants, and recycling of the graphene-based material is realized. The method provided by the invention provides the clean and efficient novel adsorbing material for treatment of the wastewater containing the pesticide pollutants.

Description

technical field [0001] The invention relates to the field of carbon nanomaterials, in particular to a method for preparing recycled graphene oxide and carbon-based adsorption materials and treating pesticide organic sewage. Background technique [0002] Pesticides not only benefit human beings, but also bring harm to the environment that human beings rely on for survival. The utilization rate of pesticides is generally 10%, and about 90% remain in the environment. A large number of lost pesticides volatilize into the air, flow into water bodies, settle and accumulate in the soil, and residual pesticide pollutants reach rivers, lakes, seas and deep strata through rainwater washing and infiltration, thereby polluting water resources. According to the data survey, the pollution rate of rivers, lakes and reservoirs in my country has exceeded 80%. Pesticide pollutants in waters are extremely harmful to crops and aquatic organisms, pollute agricultural, livestock and fishery prod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/30C02F1/28C02F101/30
CPCB01J20/20C02F1/283C02F2101/30
Inventor 戴博雅梁超凡郑再航詹洪凤焦思宇
Owner CHANGCHUN UNIV OF TECH
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