One, the harm of formaldehyde in gypsum wall panels
1、 Irritating effect
Uncleaned formaldehyde in drywall can irritate the skin and mucous membranes, and formaldehyde contains a toxic substance that can bind to proteins. When the formaldehyde concentration exceeds the standard, it can cause severe irritation of the respiratory tract, leading to swelling or bleeding, as well as eye and headache symptoms, resulting in various health problems.
2、 Allergenicity
When the formaldehyde concentration in the wall panel exceeds the permissible limit, it can irritate the skin and cause skin necrosis. Furthermore, formaldehyde can kill the surface cells of the skin. Prolonged exposure to environments with high formaldehyde levels can lead to a decline in immune function and a range of complications.
II. Methods for Removing Formaldehyde from Wall Panels
1、Removal of formaldehyde from plants
If indoor air pollution is below three times the national standard, it is considered light or moderate pollution. In such cases, using plants to remove formaldehyde can be effective. The number and size of plants can be chosen based on the room's specific function and area. For example, in a space of approximately 10 square meters, two 1.5-meter-tall plants can be placed.
2、Activated carbon for formaldehyde removal
Activated carbon can also effectively adsorb formaldehyde. In rooms with wall panels installed, placing a few bags of activated carbon is generally sufficient. Typically, it takes about two to three days for the activated carbon to absorb most of the remaining formaldehyde.
3、Photocatalytic De-formaldehyde
The principle of photocatalytic formaldehyde removal lies in the fact that the catalyst contained within the material reacts with oxygen and water under the influence of light, generating negative ions and hydroxyl radicals. These substances can oxidize and decompose formaldehyde and other pollutants, ultimately producing harmless substances such as carbon dioxide, water, and corresponding acids. This process effectively purifies the air.
4、Removal of formaldehyde using soil method
There are also some traditional methods for removing formaldehyde, which many people have used. One method involves soaking 300g of black tea in hot water in two basins and placing it indoors with open windows for ventilation. After 48 hours, the formaldehyde content within the drywall will significantly decrease, and it can also reduce some irritating odors. Alternatively, you can use orange peels, etc. Try it out.