Premium
Inactivation Efficiency of Bioaerosols Using Carbon Nanotube Plasma
Author(s) -
Yang Shinhao,
Huang YiChin,
Luo ChinHsiang,
Lin YiChang,
Huang JhihWei,
Chuang ChengPing Jimmy,
Chen ChiouJong,
Fang Wei,
Chuang ChiYu
Publication year - 2011
Publication title -
clean – soil, air, water
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.444
H-Index - 66
eISSN - 1863-0669
pISSN - 1863-0650
DOI - 10.1002/clen.201000142
Subject(s) - indoor bioaerosol , carbon nanotube , corona discharge , bioaerosol , materials science , electrode , plasma , carbon fibers , water disinfection , chemistry , nanotechnology , environmental chemistry , environmental science , composite material , environmental engineering , organic chemistry , physics , aerosol , quantum mechanics , composite number
The purpose of this study was to inactivate indoor bioaerosols using carbon nanotube corona discharge plasma technology. Escherichia coli , Bacillus subtilis , and λ virus bioaerosols were generated using a Collison nebulizer. The effect of various factors, including the flow rate (30, 60, and 90 lpm) and the operating voltages (−1.5, −3.0, −4.5, −6.0, and −7.5 kV), on bioaerosol reduction was examined. The results indicated that the corona discharge using the carbon nanotube electrodes decreased the threshold voltage of plasma. The inactivation efficiencies of E. coli bioaerosols using the carbon nanotube corona discharge system at discharge voltages of −1.5, −3.0, −4.5, −6.0, and −7.5 kV were 57, 61, 71, 93, and 97%, respectively. The corona discharge system using carbon nanotube electrodes had higher bioaerosol inactivation efficiency than the corona discharge system using stainless steel electrodes. The results further demonstrated that the inactivation efficiency decreased with an increasing flow rate. The inactivation efficiencies of E. coli , B. subtilis , and λ virus bioaerosols using carbon nanotube corona discharge plasma were 93, 88, and 81%, respectively.