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Healthy living can be said to be one of the most concerned topics for modern urbanites. In recent years, people have paid more and more attention to environmental pollution problems, especially formaldehyde pollution. Almost everyone talks about the degree of "formaldehyde" discoloration! So, is there a safe, effective and convenient way to purify indoor environmental pollution? The following small methods can help you easily remove formaldehyde without spending too much money.
Plant absorption method
Plants have a strong ability to absorb formaldehyde, such as cactus, spider plant, reed, ivy, iron tree, chrysanthemum and so on.
Expert comment: Many plants do have the effect of purifying the air. But this does not mean that the plant can completely remove formaldehyde from the air. The absorption of formaldehyde by plants can only play an auxiliary role in the process of purifying the air. If the formaldehyde content in the air is too high, it may even cause the death of the plant itself. In general, large-leaf and vanilla plants have better effects on formaldehyde absorption, such as spider plants and tiger-tail orchids.
Folk flow method
Put the tea leaves, grapefruit skin, onion slices, pineapple pieces, etc. in the newly renovated room or fumigate the room with white vinegar.
Expert comment: The use of tea residue, grapefruit skin, onion slices, pineapple blocks and other soil methods can only play a role in covering, such as covering the smell of the toilet. But these things do not absorb formaldehyde in the air. In addition to these things, some people also like to use perfumes and air fresheners. This is not desirable because the chemical materials in perfumes and air fresheners may react with substances in the air, causing secondary pollution.
Activated carbon adsorption
Solid activated carbon has many characteristics of pores, and has strong adsorption and decomposition effects on harmful substances such as formaldehyde. The smaller the particles of activated carbon, the better the adsorption effect.
Expert comment: The adsorption of formaldehyde on activated carbon is very obvious, but depending on the size of the space, the amount of activated carbon is also different. In addition, the activated carbon needs to be replaced after it has been adsorbed to a certain extent. The effect of activated carbon is good, but like other methods, it does not completely remove formaldehyde from the air.
Photocatalyst decomposition
The catalyst in the photocatalyst generates negative ions and hydroxyl radicals with oxygen and moisture in the air under the stimulation of light, can oxidize and decompose various organic pollutants and inorganic pollutants, and finally degrade into carbon dioxide, water and corresponding acid. And other harmless substances, so as to achieve the role of decomposing pollutants and purifying the air.
Expert Comments: Experiments have shown that photocatalysts are effective in absorbing formaldehyde. As a new type of material, photocatalyst does not cause secondary pollution in theory. However, since various manufacturers produce photocatalysts with different processes, it cannot be said that photocatalyst will not cause secondary pollution. In addition, the use of photocatalysts is complicated and generally used by specialized service companies.
Purifier treatment
At present, air purifiers on the market are classified into negative ion type, ozone type, filter adsorption type, static electricity type and photocatalyst type. Different air purifiers have different working principles. For example, negative ion type is to purify indoor air by generating negative ions, decomposing odor in the air and attached smoke.
Expert comment: Air purifiers have certain effects in absorbing formaldehyde, but air purifiers are generally only effective in closed spaces.
If the air purifier is used in the case of opening a window, it is not only ineffective but also wastes electricity.
Chemical purification method
At present, there are two kinds of formaldehyde trapping agents on the market, one is to purify the air by neutralizing formaldehyde and generating harmless substances; the other is to purify the air by blocking formaldehyde and preventing the volatilization of formaldehyde.
Expert Comments: Formaldehyde trapping agent is also an effective way to absorb formaldehyde. At present, some people think that formaldehyde blocking agent completely limits the volatilization of formaldehyde. In fact, formaldehyde blocking agent can not completely block formaldehyde, and can only reduce the amount of formaldehyde released. Therefore, it is believed that the blocked formaldehyde will erupt at some time. The understanding is not correct.
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Active Pharmaceutical Ingredients(API)
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