Control of Indoor Suspended Microorganisms by UV and Photocatalytic Disinfection

Young H. Yoon; Sook H. Nam; Jin Chul Joo; Ho Sang Ahn; Tae M. Hwang; Jae Ro Park

doi:10.4028/www.scientific.net/MSF.804.221

Paper Titles

Research on Preparation Technology for Machinable Ceramics
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The Photocatalytic Degradation of Methomyl over TiO₂ Nanopowder Prepared by the Low Temperature Solvothermal Route
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Estimation of UV Dose for the Effective Degradation of Pharmaceuticals in Secondary Treated Wastewater
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Preparation of Fe/N Co-Doped TiO₂ Powders by Mild Hydrothermal Method
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Control of Indoor Suspended Microorganisms by UV and Photocatalytic Disinfection
p.221

Catalytic Activities of α, β, γ - Bismuth Molybdates for Selective Oxidation of Propylene to Arcrolein
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Antibacterial Properties Evaluation of a Novel Polyurethane-Based Root Canal Sealer
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Potential of Tourmaline/Chitosan Fiber for Wound Dressing
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Fluoridation and Mechanical Properties of Hydroxyapatite with Addition of TiF₃, Al₂O₃ and Fe₂O₃ by Sintering
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HomeMaterials Science ForumMaterials Science Forum Vol. 804Control of Indoor Suspended Microorganisms by UV...

Control of Indoor Suspended Microorganisms by UV and Photocatalytic Disinfection

Abstract:

This study presents the results of removal of Bacillus subtilis sp. and irradiated by UVA(3 μW/cm²) with three types of photo-catalysts (TiO₂, ZnO, ZnO/laponite ball) to improve indoor air quality. The results showed that B. subtilis sp. was removed up to over 80% after 2 hours of reaction with all the photo-catalysts used and UVA irradiation. The B. subtilis sp. removal rate increased to more than 30 % when used both UVA and photo-catalysts, compared to that with only UVA control. Among the catalysts, ZnO/Laponite composite ball was found to have similar sterilization capacity to TiO₂. Further study needs to figure out the optimum intensity of UVA and catalysts dosage to effectively disinfect and destroy the other microorganisms commonly found in indoor air environment.

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Periodical:

Materials Science Forum (Volume 804)

Pages:

221-224

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.804.221

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Online since:

October 2014

Authors:

Young H. Yoon*, Sook H. Nam, Jin Chul Joo, Ho Sang Ahn, Tae M. Hwang, Jae Ro Park

Keywords:

Bacillus. subtilis Spore, Photocatalytic Inactivation, TiO₂, UV, ZNO

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