Removal of indoor airborne bacteria by the nano-Ag/TiO2 as photocatalyst: a feasibility study in museum and nursing institutions

NCUTIR > Department of Cultural and Creative Industries > Department of landscape Design and Management Technology > 【景觀系】期刊論文 > Item 987654321/6821

Please use this identifier to cite or link to this item: http://ir.lib.ncut.edu.tw/handle/987654321/6821

Title:	Removal of indoor airborne bacteria by the nano-Ag/TiO2 as photocatalyst: a feasibility study in museum and nursing institutions
Authors:	宋文沛
Contributors:	景觀系
Date:	2011-03
Issue Date:	2017-12-17 10:16:08 (UTC+8)
Abstract:	Deterioration of indoor air quality attributable to airborne bacterial consortia is a widespread environmental problem. The main objective of this study is to evaluate the feasibility of applying the syngetic effect of nano-Ag/TiO2Ag/TiO2 as a photocatalyst and UV light to enhance the disinfecting capability of full-scale bacterial restraining equipment on-site in the National Museum of Natural Science and a medical-nursing institute. The influence of initial counts of total airborne bacteria and volume of space on the efficiency of bacterial restraining have been studied. In the case of museum application, a higher initial total bacterial count leads to better bacterial restraining rates; Site A (initial total bacterial counts = 506 CFU/m3506 CFU/m3) has the best bacterial restraining rate (92%) as compared with Site B (69%, initial total bacterial counts = 158 CFU/m3158 CFU/m3) and Site C (80%, initial total bacterial counts = 338 CFU/m3338 CFU/m3) after 24 h of operation. Higher initial counts of total airborne bacteria lead to an increasing bacterial restraining rate. Approximately 92% (Site A) and 74% of restrained bacterial rate were observed in a museum and nursing institutions, respectively, under the similar initial total airborne bacterial counts (506, 598 CFU/m3598 CFU/m3). The results illustrate that changes in the volume of space do not have significant inhibitory effects on the efficiency. The proposed equipment can disinfect air to restrain bacteria effectively, as demonstrated on-site in museums and nursing institutions; the results will be valuable references for designing a full-scale commercialized device for large-scale applications in the future.
Relation:	Journal of Environmental Engineering, ASCE
Appears in Collections:	[Department of landscape Design and Management Technology] 【景觀系】期刊論文

Files in This Item:

There are no files associated with this item.

View Licence

Loading...