Open AccessApplying the Ozone Water Spraying for Inactivating E. Coli bioaerosols
Author(s) -
Hsiao-Chien Huang,
Hsiao-Li Huang,
Ying-Fang Hsu,
Shu Yang
Publication year - 2019
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/310/5/052027
Subject(s) - indoor bioaerosol , bioaerosol , ozone , chemistry , environmental chemistry , environmental engineering , environmental science , aerosol , organic chemistry
This work applied ozone water spraying to explore the feasibility of inactivating bioaerosol. The inactivating efficiency using ozone water (OW) spraying individually against airborne strains Escherichia coli (E. coli) bioaerosols was evaluated in the testing chamber. The setting air exchanged rate (ACH) in this work were 0.5 and 1.0 h −1 . The OW operating concentration of 0.5 and 1.0 ppm were sprayed into the testing chamber for inactivating bioaerosols, respectively. Higher OW spraying concentration showed better inactivating results. The inactivation constant of E.Coli against WO 0.5 and 1.0 ppm spraying under ACH 1.0 h −1 was 0.236 and 0.435 (min −1 ). Moreover, the bioaerosol removal efficiency would increase with ACH. The inactivation decay coefficient of WO 1.0 ppm spraying against E.Coli was 0.312 and 0.435 (min −1 ) under ACH 1.0 and 0.5 h −1 . The results demonstrated that the WO spraying technology was effective in inactivating bioaerosols.