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Composite material for restoring polycyclic aromatic hydrocarbon pollution and preparation method and application of composite material

A technology of polycyclic aromatic hydrocarbons and composite materials, applied in the field of environmental science, to achieve the effects of cheap sources, improved catalytic activity, and simple preparation processes

Inactive Publication Date: 2018-10-12
江苏金环科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] Through the investigation of existing technologies, it is found that exploring new and efficient PAH pollutant treatment processes is still of practical value and scientific challenge

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048]According to the molar ratio of high-carbon organic matter oxalic acid and zinc acetate is 10:1, weigh the raw materials and place them in a mortar, grind them thoroughly until the system becomes viscous and transparent, then transfer the transparent liquid to a crucible and dry it at 200°C 1h until no gas is released. Finally, the obtained brown fluffy material was calcined at 500° C. for 4 hours, and then cooled rapidly (the cooling method was air cooling; the cooling rate was 100° C. / min) to obtain a pale pink powder (that is, zinc oxide modified with carbon dots). The particle size of the product observed by a transmission electron microscope is about 40nm, and the product has good dispersibility.

[0049] Take 1g of the carbon dot-modified zinc oxide, add 10g of Fenton's reagent material and stir to obtain a composite material for repairing PAH pollution, and then add it to PAH-polluted sewage or soil to realize the catalysis of PAH - oxidation treatment.

Embodiment 2

[0051] According to the molar ratio of high-carbon organic matter citric acid and zinc nitrate as 10:1, weigh the raw materials and place them in a mortar, grind them thoroughly until the system appears viscous and transparent, then transfer the transparent liquid to a crucible, and put it under the condition of 150°C Dry for 5h until no gas is released. Finally, the obtained brown fluffy material was calcined at 600° C. for 2 h, and then cooled rapidly (the cooling method was air cooling; the cooling rate was 100° C. / min) to obtain a light pink powder (that is, zinc oxide modified with carbon dots). The particle diameter of the product observed by a transmission electron microscope is about 55nm, and the product has good dispersibility.

[0052] Take 1g of the carbon dot-modified zinc oxide, add 1g of Fenton's reagent material and stir to obtain a composite material for repairing PAH pollution, and then add it to PAH-polluted sewage or soil to realize the catalysis of PAH - ...

Embodiment 3

[0054] According to the molar ratio of high-carbon organic matter citric acid and zinc nitrate as 10:1, the raw materials were weighed and placed in a mortar, fully ground until the system appeared viscous and transparent, and then the transparent liquid was transferred to a crucible, and heated at 200°C Dry for 6h until no gas is released. Finally, the obtained brown fluffy material was calcined at 800° C. for 2 hours, and then cooled rapidly (the cooling method was air cooling; the cooling rate was 200° C. / min) to obtain a light pink powder (that is, zinc oxide modified with carbon dots). The particle diameter of the product observed by a transmission electron microscope is about 50 nm, and the product has good dispersibility.

[0055] Take 10g of the carbon dot-modified zinc oxide, add 1g of Fenton's reagent material and stir to obtain a composite material for repairing PAH pollution, and then add it to PAH-polluted sewage or soil to realize the catalysis of PAH - oxidatio...

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Abstract

The invention belongs to the technical field of environmental science, and particularly relates to a composite material for restoring polycyclic aromatic hydrocarbon pollution and a preparation methodand application of the composite material. The composite material for restoring polycyclic aromatic hydrocarbon pollution comprises carbon dot modified zinc oxide and a Fenton's reagent, and the massratio of the carbon dot modified zinc oxide to the Fenton's reagent is (1-10): (10-1). The invention further provides the preparation method and application of the composite material. Photocatalyticdegradation and oxidation degradation processes are organically bonded, the two parts are subject to the synergistic effect to achieve quick rapid degradation of polycyclic aromatic hydrocarbon, and environmental heavy metal pollution information can be provided.

Description

technical field [0001] The invention belongs to the field of environmental science and technology, and specifically relates to a composite material for repairing polycyclic aromatic hydrocarbon pollution, its preparation method and application. Background technique [0002] Regarding the removal of polycyclic aromatic hydrocarbon pollutants in the environment, there are mainly the following processes: [0003]1. Microbial removal method: application number CN201610440052.X belongs to the field of soil remediation technology, and specifically relates to a polycyclic aromatic hydrocarbon contaminated soil remediation agent. Soil remediation agent polluted by polycyclic aromatic hydrocarbons, including the following components: chitin, zeolite powder, green algae, humic acid, shell powder, enoki mushroom chaff, corn cob, fly ash, tea seed shell, peat ash , Areca nut wood chips, palm wood chips, compound enzyme preparations, compound microbial agents. The soil remediation agen...

Claims

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Application Information

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IPC IPC(8): B09C1/08B01J23/06B82Y30/00B82Y40/00C09K17/40
CPCB01J23/06B09C1/002B09C1/08B09C2101/00B82Y30/00B82Y40/00C09K17/40
Inventor 顾万建王莹吴晔蒋超方超
Owner 江苏金环科技有限公司
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