Eco-friendly system purifies air through water without waste

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Researchers here have developed an eco-friendly mechanism of purifying the air by using water without producing waste.

Cha Yun-kyung explains.

Worsening fine dust due to the cold weather has increased the use of air purifiers, however, the need to change filters and waste issues have become a problem. To solve these, researchers have developed an eco-friendly air purifying system that imitates the body's circulatory system. Once polluted air enters the system, microbubbles form in a water container as they pass through an elastic microprocessing filter. The small, even-textured micro bubbles capture fine dust and carbon dioxide, sending carbon dioxide outside and oxygen inside through the circulation of water.

"We have developed an air-purifying system by imitating the human body's circulatory and respiratory system. We can circulate the air inside and outside through the system to dispense VOC and carbon dioxide outdoors. It can solve the issue of micro dust and 미세먼지 and carbon dioxide at the same time."

In tests using a closed space with a mouse inside, the system decreased the level of carbon dioxide by 30-percent, which saw the mouse's activity increase 53-percent. Current systems' performance deteriorates as filters age and can cause odors. The new system does not require filter cleaning or changing as long as the water is renewed.

"The system's driving principles and structures are quite simple and suitable to enlarge in scale, and they can replace pricy and complicated former air purifying systems."

The research team expects that the system will be able to purify air of other pollutants, such as acetone or ethanol.

Cha Yun-kyung, Arirang News.