NTU team develop new water treatment device

CLEANER WATER: The research team said their device could help industrial plants reuse their manufacturing wastewater and make household water taste better

Taipei Times
Date: Dec 26, 2019
By: Lin Chia-nan  /  Staff reporter

National Taiwan University (NTU) researchers yesterday unveiled a water purification device that they

Photo: Chien Hui-ju, Taipei Times

said can absorb three times more pollutants than activated carbon and would help industrial plants reuse wastewater.

The deionization device could be used to process industrial wastewater and allow them to reuse the treated water in manufacturing processes, and it could also be used to remove calcium and magnesium in household drinking water to make it taste better, chemical engineering professor Kevin Wu (吳嘉文) told a news conference at the Ministry of Science and Technology in Taipei.

The key to purifying water is to remove heavy metal ions, Wu said, adding that previously used materials had insufficient capacity for absorbing pollutants due to their limited electrical conductivity.

After experimenting with different materials, the team developed nitrogen-doped nanoporous carbon materials, which have larger surface areas allowing for enhanced electrosorption capacity, but their conductivity was still insufficient, he said.    [FULL  STORY]

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