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Application of carbon aerogel to heavy metal contaminated soil restoration

A carbon aerogel and polluted soil technology, which is applied to the restoration of polluted soil and other directions, can solve the problem of difficulty in determining the occupational exposure of chromium, and achieve the effects of remarkable adsorption effect, simple process and low cost.

Inactive Publication Date: 2015-11-04
XIAN BONA MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Occupational exposure to chromium is difficult to determine because of its widespread use, but occupational exposure to chromium is certainly a major concern in causing cancer

Method used

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  • Application of carbon aerogel to heavy metal contaminated soil restoration
  • Application of carbon aerogel to heavy metal contaminated soil restoration
  • Application of carbon aerogel to heavy metal contaminated soil restoration

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Dissolve 1g of glucose and 1g of polyvinylpyrrolidone (K30) in 1mL of water and 2mL of glacial acetic acid, transfer the mixture to a closed reactor, and react at 200°C for 8 hours. After the reaction, a columnar carbon airgel is obtained. See figure 1 , the transmission electron micrographs of carbon aerogels are shown in figure 2 , it can be seen from the figure that the size of carbon particles is about 30nm.

Embodiment 2

[0020] Dissolve 5.5g of sucrose and 0.5g of polyacrylamide (Mw: 2000000~14000000) in 20mL of water, add 6mL of formic acid, transfer the mixture to a closed reaction kettle, and react at 200°C for 5 hours. After the reaction, a cylindrical carbon airgel.

Embodiment 3

[0022] Dissolve 5g of fructose and 0.6g of polyvinylpyrrolidone (K30) in 15mL of water, transfer the mixture to a closed reactor, and react at 140°C for 16 hours. After the reaction, a cylindrical carbon airgel is obtained.

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Abstract

The invention discloses application of carbon aerogel to heavy metal contaminated soil restoration. According to the application of the carbon aerogel to the heavy metal contaminated soil restoration, in a sealed container, water-soluble carbohydrates and water-soluble polymers are dissolved in water, and after the reaction at 140-300 DEG C, the carbon aerogel is obtained through drying. According to theapplication of the carbon aerogel to the heavy metal contaminated soil restoration, the prepared carbon aerogel has a prominent adsorbing effect on heavy metal cadmium and chromium in soil, and therefore the purpose of restoring the soil is achieved. The application of the carbon aerogel to the heavy metal contaminated soil restoration has the technical effects of being simple in technology, low in cost and suitable for industrial production.

Description

technical field [0001] The invention relates to the application of carbon aerogel in remediation of heavy metal polluted soil. Background technique [0002] The concept and scope of heavy metal elements in the field of environmental pollution are not strictly limited, and usually refer to elements with significant biological toxicity, such as lead, cadmium, mercury, chromium, copper, zinc, arsenic, etc., among which cadmium and chromium are highly toxic element, and is also the most noticeable heavy metal. [0003] Cadmium in nature is a rare dispersed element, which mainly exists in the form of cadmium sulfide, cadmium sulfate, cadmium nitrate, cadmium chloride, cadmium acetate, cadmium carbonate, and cysteine-cadmium complexes. Cadmium has different toxicity. Among them, cadmium nitrate and cadmium chloride have better solubility in water, so they are more toxic to humans, animals and plants. Cadmium ions in aqueous solution will form Cd(OH) according to the change of pH...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/00
Inventor 党桃桃耿艳敏
Owner XIAN BONA MATERIAL TECH CO LTD
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