In the studies, the use of a dry-folded tissue was the most effective filter for particles or aerosols. Using damp material, such as a towel or tissue, actually reduced the effectiveness of vapor filtration. In addition, wet materials are more difficult to breathe. Smart Air is a social enterprise that creates simple and sensible air purifiers and offers free education to protect people's health from the effects of air pollution.
Since luxury air purifiers are worth 8,000 RMB here in Beijing, and I'll only be here for a year, I thought I'd try to make my own. Smart Air is a certified B company that is committed to combating the myths that large companies use to inflate the price of clean air. Experience breathing truly clean air with effective air purifiers and no tricks that won't ruin your pocket. So I used a thick layer of paper towels on my air filter device and I wonder if it will work or not.
Let me know what you think. Unfortunately, paper towels alone cannot be used as an air filter. There are many very fine and invisible particles that the filters trap and cannot be seen. I noticed that my vacuum doesn't have a HEPA air filter and I was wondering if I could put a few layers of tissue paper to filter the air.
A recent CDC study confirmed that COVID-19 infection rates were significantly lower in schools that used air purifiers. I don't think only paper towels should work, the spaces between the paper are still large enough to let certain molecules enter the current of air. I prefer that you don't use any air filters because somewhere I think I read that they create o3 in the ionization process and somehow put negative ions in the air. I have a small air filter device that I bought on Amazon called True Air, and they sell additional filters at ridiculous prices.
Tissue paper can be used as a particulate filter in the air, but because the material itself is so weak, a strong air flow through it will cause it to break into pieces. For these reasons, air filters are often manufactured with a metal mesh structure embedded in them to provide mechanical strength and with a filter material that traps particles within their thickness and not on their surface. In addition, even if it were mechanically strong, the particles it filters settle directly on its surface, accumulate there and quickly clog its pores and stop the flow of air through it. Based on my research on how different filters work, I came to the conclusion that a HEPA filter is all that is really needed to combat particulate air pollution in China.