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Method for extracting organic oil pollutants in soil

A technology of organic pollutants and extraction methods, which is applied in the field of extraction of oily organic pollutants in soil, can solve problems affecting the development of environmental restoration and treatment of petroleum hydrocarbon pollution, and achieve the effect of low energy consumption

Inactive Publication Date: 2012-02-22
SHANGHAI UNIV
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Problems solved by technology

[0003] Different researchers used various analysis and detection methods of petroleum hydrocarbon pollutants in sediments and soils to carry out investigation and research work, which laid a certain foundation for the quality evaluation and pollution control of petroleum organic pollution in sediments and soil environments. However, due to different The differences in the methods used by scholars have affected the further development of the remediation and treatment of petroleum hydrocarbon-contaminated environments in sediments and soils

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  • Method for extracting organic oil pollutants in soil
  • Method for extracting organic oil pollutants in soil
  • Method for extracting organic oil pollutants in soil

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Embodiment Construction

[0013] 1. Material preparation

[0014] (1) Non-polluted soil samples: North open space of Huanhua Building, East District, Shanghai University;

[0015] (2) Diesel oil for test: No. 0 diesel oil (purchased at Sinopec Minghe Gas Station, Nanchen Road, Baoshan District, Shanghai);

[0016] (3) Reagents: silica gel G, alumina G; silica gel (100~200 mesh), neutral alumina (100~200 mesh); carboxymethyl cellulose sodium salt (CP); anhydrous sodium sulfate, acetone, benzene , petroleum ether (30~60°C), dichloromethane, cyclohexane, ether, n-butanol, acetic acid (AR).

[0017] (4) Extractant: dichloromethane, petroleum ether, acetone, dichloromethane: petroleum ether (v / v, 1:1), petroleum ether: acetone (v / v, 1:1), dichloromethane: acetone (v / v, 1:1);

[0018] (5) The main instruments and equipment of the experiment: ultrasonic extractor (SB-5200DTS), Soxhlet extractor (SXT-02), dark box UV lamp transmissometer (ZF-90), micro sampler, gas chromatograph (Agilent7890 ), gas chrom...

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Abstract

The invention relates to a method for extracting organic oil pollutants in soil. Specific steps of the method includes that soil polluted by the organic oil pollutants is soaked in organic solvent, is ultrasonically extracted at the temperature of 40 DEG C for 20 minutes, then keeps static and is filtered, extracting agent is removed from obtained filtrate, so that extractives are obtained, and frequency of used ultrasonic waves is 40kHz during ultrasonic extraction. The highest extraction efficiency for the pollutants in soil samples can achieve 99%. The method for extracting organic oil pollutants in soil is a new way for ultrasonically extracting the organic pollutants in polluted soil, has the advantages of simplicity, convenience, capability of saving time, high efficiency, low pollution and energy consumption, and the like, and is applicable to be popularized and used as pretreatment technology for polluted soil and sediment samples.

Description

technical field [0001] The invention relates to a method for extracting oily organic pollutants in soil. Background technique [0002] With the development of the economy, the human demand for energy continues to expand, and oil has become one of the most important energy sources for human beings. In its production, processing, transportation, and use, improper operation or human reasons may cause accidents such as leakage and overflow. , will bring different degrees of pollution to the soil, water, air and other environments. Petroleum pollutants entering the sediment and soil will destroy its structure and water permeability, and these pollutants will react with the available nitrogen, phosphorus, and potassium in the soil to reduce soil fertility. In recent years, countries around the world have begun to pay attention to the pollution control of sediments and soils, an important resource for human survival, especially the treatment of oily organic pollutants in sediments...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28B01D11/02
Inventor 苏鹏程刘晓艳张新颖陈丽莎刘珊珊刘发辉田翔顾谷晶
Owner SHANGHAI UNIV
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