A Comparative Study on Decomposition of Airborne Microorganisms by Negative Air Ions and Nano-Ag/TiO2 as Photocatalyst in Medical Nursing Institution

Tzai Tang Tsai; Yu Kuang Zhao; Wen Pei Sung; Hsien Jung Wang

doi:10.4028/www.scientific.net/AMM.71-78.2631

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 71-78A Comparative Study on Decomposition of Airborne...

A Comparative Study on Decomposition of Airborne Microorganisms by Negative Air Ions and Nano-Ag/TiO₂ as Photocatalyst in Medical Nursing Institution

Abstract:

This study focused on the investigation of the effectiveness of nano-plasma negative air ionization (NPNAI) and photocatalytic oxidation with combining nano-Ag/TiO₂ as photocatalyst and UV light irradiation to enhance the disinfecting capability of full-scale bacterial restraining equipment in the medical nursing institute. Results show the bacteria removal efficiencies (η) of different methodologies, respectively. In this removal method, the contributions of photocatalytic oxidation (PCO) as nano-Ag/TiO₂ (ave. bacterial restraining rate = 73%) were higher than those of NPNAI (ave. bacterial restraining rate = 17%) for the removal of airborne microorganisms. The proposed equipment can disinfect air to restrain bacteria effectively as demonstrated on-site in medical nursing institutions; the results will be valuable references for designing a full-scale commercialized device for large-scale applications in the future.

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Periodical:

Applied Mechanics and Materials (Volumes 71-78)

Pages:

2631-2635

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.71-78.2631

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Online since:

July 2011

Authors:

Tzai Tang Tsai, Yu Kuang Zhao, Wen Pei Sung, Hsien Jung Wang

Keywords:

Indoor Air, Medical Nursing Institution, Nano-Ag/TiO₂, Nano-Plasma Negative Air Ionization, Photocatalytic Oxidation

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