Can onions remove formaldehyde? It turns out the result is like this

Formaldehyde is extremely harmful to the human body, so newly renovated houses need to be treated to expel all the formaldehyde in the room. Some people say that onions have a powerful effect in absorbing formaldehyde. Facts have proved that this is a wrong practice. It is just that the smell of onions is stronger than the smell of formaldehyde and it does not attract it.

1. I don’t know when the method of “removing formaldehyde with onions” came out, but some people believe that onions can “kill bacteria” and therefore can “kill formaldehyde”. Regarding this issue, the editor consulted an expert and found that the claim that onions can remove formaldehyde is simply nonsense. Formaldehyde is a chemical product and onions do not have the ability to decompose formaldehyde. The reason why you no longer smell formaldehyde when you place onions indoors is because the smell of onions covers up the formaldehyde. Covering up the odor does not mean that formaldehyde has been eliminated. This approach of avoiding the important issues has no effect on controlling formaldehyde.

2. Can onions remove formaldehyde? If not, what is the correct way to remove formaldehyde?

1. Ventilation method

Recommendation index: 7 stars

Advantages: economical, no cost.

Disadvantages: takes a long time. A newly renovated house must be left vacant and ventilated for at least 3-6 months to be safe. Otherwise, if you do not pay attention to ventilation after moving in, formaldehyde will still exceed the standard.

2. Activated carbon adsorption

Recommendation index: 6 stars

Advantages: low price, convenient, suitable for removing formaldehyde in small areas such as cabinets.

Disadvantages: It is not suitable for removing formaldehyde from a large area of ​​a house under renovation. The amount of adsorption is limited and is only limited to the contact surface.

3. Photocatalyst

Recommendation index: 7.5 stars

Advantages: obvious effect, high efficiency, quick results, can control formaldehyde and attach a protective film on the surface of objects.

Disadvantages: Vicious low-price competition affects the quality of some products, incorrect operation can easily cause secondary pollution, and the price is higher than the first two items.

4. Purifier

Recommendation index: 7 stars

Advantages: It can operate for a long time, maintain the purification effect at all times, and decompose the formaldehyde released in the air.

Disadvantages: Purifiers specifically designed to treat formaldehyde are slightly more expensive, consume more electricity over a long period of time, and a new home needs to be aired out for a while before placing the purifier in the home.