Method for removing volatile organic compounds in the air and its product soil remediation agent
A technology of volatile organic compounds and soil remediation agents, applied in the restoration of polluted soil, separation methods, air quality improvement and other directions, can solve the problems of resource and energy consumption, no direct benefits, and inability to produce more organic products, etc. achieve low cost
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0025] Example 1: Catalytic absorption of volatile organic compound formaldehyde
[0026] The experiment uses a 2 meter long transparent glass tube "U" tube reactor. The "U" tube contains a mixture of catalyst and excess absorbent water. All absorbents contain 3% calcium peroxide. Under sufficient oxidation conditions, the "U" tube reactor was continuously fed with air containing 1.0 ppm formaldehyde, and samples were taken to detect the water-soluble pH value in the "U" tube reactor. Finally, stop the reaction under the condition of the selected pH value, measure the formate concentration in the aqueous solution, and calculate the product yield by comparing the molar amount of formaldehyde passed in. Each data is the average of three tests, as shown in the following table Show.
[0027]
[0028]
[0029] The results show that the oxidation product organic acid of the deep oxidation process can effectively stay in the organic acid product under the action of a specific absorbent. ...
Embodiment 2
[0032] Using the same test conditions as in Example 1, select the reaction of the UV / ozone system, add 3% calcium peroxide to the organic acid product absorbent, and use a mixture of formaldehyde, toluene, and benzene as the volatile organic compound (each substance The concentration is 10ppm), the compressed air is the carrier gas, and the flow rate is 5ml / s. It continuously passes through the 2-meter U-shaped tubular reactor. When the pH of the water mixture is=7, the volatile organic compounds at the outlet are measured. Concentration, and the concentration of organic acid salts in the aqueous solution (toluene and benzene are converted into formic acid, acetic acid, lactic acid, glycolic acid, etc., and the conversion rate is calculated based on the total carbon atom content; formaldehyde is calculated based on 83% of the result in Example 1 for formic acid, Other formic acid is included in the product calculation of toluene and benzene), and the product yield is calculated ...
Embodiment 3
[0037] Using the UV / ozone system reaction, a 50-liter glass reactor is filled with 1 kg of sodium arginine as an organic acid product absorbent. The sodium arginine contains 3% calcium peroxide. The circulating pump can continuously Air is blown into the reactor. Choose a newly renovated house of 120 square meters (the results are as follows: figure 1 As shown, the HPLC profile of the organic acid distribution and type of the product obtained from the newly renovated house is from the first peak with a peak height of more than 18mAU corresponding to glycolic acid, formic acid, lactic acid, acetic acid, maleic acid, other small peaks are not identified), and a 120 The house after two years of decoration of square meters (the result is as figure 2 As shown, the HPLC spectrum of the organic acid distribution and type of the product obtained two years after the renovation of the house is from the first peak with a peak height of more than 10mAU corresponding to glycolic acid, formi...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More