Application of graphene-based nano composite material in remediation of petroleum hydrocarbon contaminated soil

A nano-composite material and graphene-based technology, applied in the restoration of polluted soil, etc., can solve problems such as poor use effect, and achieve high permeability, degradation rate, and high degradation rate.

Active Publication Date: 2021-05-28
中骏生态环境(上海)有限公司
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Problems solved by technology

[0004] The object of the present invention is to provide the application of graphene-based nano-composite material in the remediation of petroleum hydrocarbon-contaminated soil, to solve the existing graphene-based na

Method used

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Embodiment

[0024] The invention provides a technical solution: the application of graphene-based nanocomposite materials in the remediation of petroleum hydrocarbon-contaminated soil, comprising the following steps:

[0025] S1: Preparation of graphene-based nanocomposites: add graphite powder and sodium nitrate to concentrated sulfuric acid and mix evenly, stir in ice bath for 10-15 minutes, keep the temperature below 5°C, add potassium permanganate to the solution, keep the temperature at 10 ℃ for 30 minutes, then heat the solution to 40 ℃, react in a water bath for 60-90 minutes, add deionized water to the solution and stir rapidly for 5 minutes, add hydrogen peroxide solution to the solution, pour dilute hydrochloric acid aqueous solution into the solution and stir Stand still, remove the supernatant, blow dry the remaining solution for 10-12 hours to obtain graphite oxide, add graphite oxide to water, add biochar to the water, add the mixture to the autoclave for 12 hours, and set th...

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Abstract

The invention belongs to the technical field of petroleum hydrocarbon contaminated soil remediation, and particularly relates to an application of a graphene-based nano composite material in remediation of petroleum hydrocarbon contaminated soil, wherein the application comprises the following steps: S1, preparing the graphene-based nano composite material: adding graphite powder and sodium nitrate into concentrated sulfuric acid, uniformly mixing, stirring for 10-15 minutes in an ice bath state, and keeping the temperature at 5 DEG C or below; and adding potassium permanganate into the solution. By arrangement of the graphene-based nano composite material, the graphene-based nano composite material contains titanium dioxide, radiation energy of ultraviolet light with the wavelength lower than 387 nm is absorbed through the titanium dioxide, and high-activity electrons and electron-holes are generated; meanwhile, dissolved oxygen, hydroxyl radicals, organic pollutants, water molecules and the like in soil can be adsorbed by utilizing the huge specific surface area of the material, so that a series of chemical reactions are carried out on the surface of the material, and finally, the organic pollutants are degraded to generate hydroxyl free radicals and superoxide ions.

Description

technical field [0001] The invention relates to the technical field of remediation of petroleum hydrocarbon-contaminated soil, in particular to the application of graphene-based nano-composite materials in the remediation of petroleum hydrocarbon-contaminated soil. Background technique [0002] Petroleum hydrocarbon pollution mainly comes from the leakage of pumps, pipelines, oil tanks and purification equipment in the process of oil exploitation, leakage and unqualified discharge in the production process of chemical plants, etc. The long chain part of petroleum hydrocarbons has a large molecular weight and structure Tight, so its emulsification performance is low, and it has a strong retention in the soil, which will have a serious impact on the soil structure and biological populations. Like heavy metal pollutants, it will be enriched in accumulating plants and enter the food chain. Take aromatic hydrocarbons as an example, they are extremely toxic to humans and animals, ...

Claims

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Application Information

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IPC IPC(8): B09C1/08
CPCB09C1/08
Inventor 苗涛付建芳吴可钦
Owner 中骏生态环境(上海)有限公司
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