Scientists have created a desktop air filter that instantly kills coronavirus and anthrax
The research team has developed a compact air filter that captures airborne viruses and kills them instantly with high temperatures.
Scientists have known for a long time that pathogens cannot survive temperatures above 70 ° C, but using this kind of cleaning technology in a room can increase the load on the air conditioning system. Therefore, researchers from the University of Houston decided to use foam metal as a filter, which emits a minimum of heat into the environment.
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The team chose regular nickel foam because of its availability, high porosity, flexibility, electrical conductivity and good air permeability. The only obstacle was the low resistivity, which made it difficult to raise the temperature of the foam metal to 200 ° C, at which most microorganisms die almost instantly.
To solve the problem, the team simply stacked several layers of foam together and connected them to electrical wires. This allowed the filter temperature to be raised to 200 ° C while minimizing the amount of heat generated.
The researchers have created a prototype of a compact device that can be safely placed on a table. Laboratory tests have shown that after one pass of air through such a filter, 99.8% of the Covid-19 virus and 99.9% of anthrax spores are destroyed.
According to the developers, such systems can be used in schools, offices, airplanes and other places with a high concentration of people.
Earlier, we also reported on the development of a material that can increase 100 times under the influence of a weak electric current.