Foam blocking material suitable for volatile organic compound polluted soil and application of foam blocking material
A technology for volatile organic compounds and polluted soil, which is applied in the field of polluted soil remediation and treatment, can solve problems such as insufficient isolation technology in inflatable greenhouses or steel structure greenhouses, and achieve the effects of reducing air pollution, cheap and easily available materials, and stable properties.
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Embodiment 1
[0037] Prepare foam barrier materials, including 17.1% protein substances, 8.4% inorganic salt substances, 1.4% small molecular organic substances, 3.1% starch substances, 1.0% thickener, and 69.0% deionized water.
[0038] Wherein, the protein substance is hydrolyzed animal protein extracted from animal fur, and the average relative molecular weight of the hydrolyzed animal protein is 3000. Inorganic salts are formed by mixing zinc sulfate and ferrous sulfate at a mass ratio of 1:1. Small molecular organic matter is sodium lauryl sulfate. The starchy substance is composed of cornstarch, soluble starch and amylose in a mass ratio of 1:1:1. The thickener is xanthan gum.
[0039] The above-mentioned solid components are mixed evenly, and deionized water is slowly added to fully dissolve to prepare a foaming material.
[0040] Dilute the prepared foam barrier material with deionized water at a dilution ratio of 1:4; stir the diluted liquid at a high speed at a stirring speed o...
specific example
[0041] The action principle of the foam barrier material of the present embodiment is as follows: figure 1 As shown, that is, in actual use, the volatile organic compound-contaminated soil 2 to be treated is evenly covered with a foam barrier material to form a dense foam layer 1, which can effectively prevent organic matter and dust in the soil from entering the air and reduce air pollution. Specific examples are as follows:
[0042] Put 200g of contaminated soil with a chloroform content of 200.0mg / kg in a container, add 50g of the generated foam to the container at room temperature, evenly cover the contaminated soil with a foam thickness of 7.2cm, and place it in a fume hood.
[0043] After 1 hour, a small amount of chloroform enters the air, and the barrier rate is greater than 99%; after 3 hours, a small amount of chloroform enters the air, and the barrier rate is greater than 92%; after 6 hours, part of the chloroform enters the air, and the barrier rate is greater than...
Embodiment 2
[0045] This embodiment is applicable to the foam barrier material of soil polluted by volatile organic compounds. The material is prepared from raw materials including the following components and parts by weight: 10 parts of protein substances, 2 parts of inorganic salt substances, and 1 part of small molecular organic substances , 2 parts of starch, 1 part of thickener and 84 parts of deionized water.
[0046] Wherein, the protein substance is hydrolyzed animal protein extracted from hooves and feet of animals, and the average relative molecular weight of the hydrolyzed animal protein is 500. The inorganic salt is sodium sulfate. The small molecule organic matter is made by mixing sucrose and sodium dodecylbenzenesulfonate at a mass ratio of 3:1. The starchy substance is formed by mixing cornstarch and potato starch at a mass ratio of 2:1. The thickener is composed of gelatin, gum arabic and xanthan gum in a mass ratio of 1:2:1.
[0047] The present embodiment foam barrie...
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