A new air filter has been developed that can heat up to 250 degrees Celsius, effectively killing SARS-CoV-2 aerosols that can otherwise linger in indoor spaces for several hours. The coronavirus is not only transmitted through droplets released when speaking, coughing, or sneezing, but also through aerosols, which are tiny particles that can remain suspended in the air for extended periods. Experts believe that aerosols are the most likely cause of superspreading events, where a large number of people become infected with the virus in a short amount of time. As pandemic restrictions are lifted, finding ways to reduce the risk of infection indoors is becoming increasingly important.
Researchers at the University of Houston have developed an antiviral air filter made of nickel foam, which can be heated to temperatures that are lethal to the virus. The filter is designed to complement other measures, such as regular air exchange, to reduce the concentration of virus-laden aerosols in indoor spaces. The nickel foam is porous and can be easily used as an air filter. By modifying the structure of the foam’s connection points, the researchers were able to increase its resistance to electricity, allowing it to be heated to high temperatures. In experiments, the filter was able to kill up to 99.8% of coronaviruses and other pathogens in a single pass.
The researchers believe that the filter could be useful in a variety of settings, including office buildings, schools, cruise ships, airplanes, and airports. A smaller version of the filter could also be used to purify the air in individual rooms. The filter is compatible with many existing ventilation systems and can be easily produced on an industrial scale. The researchers hope that the filter will soon be available on the market, providing an effective way to reduce the risk of indoor transmission of the coronavirus.
In conclusion, the development of an antiviral air filter that can kill SARS-CoV-2 aerosols is a significant breakthrough in the fight against the pandemic. As the risk of infection indoors remains high, finding ways to reduce the concentration of virus-laden aerosols is crucial. The nickel foam filter developed by researchers at the University of Houston offers a promising solution that could be used in a variety of settings. With its compatibility with existing ventilation systems and ease of production, the filter could soon be widely available, providing an effective way to reduce the risk of indoor transmission of the coronavirus.
