Thermal effects on bacterial bioaerosols in continuous air flow

Cited 31 time in webofscience Cited 0 time in scopus
  • Hit : 390
  • Download : 225
DC FieldValueLanguage
dc.contributor.authorJung, Jae Heeko
dc.contributor.authorLee, Jung Eunko
dc.contributor.authorKim, Sang Sooko
dc.date.accessioned2009-07-17T02:30:00Z-
dc.date.available2009-07-17T02:30:00Z-
dc.date.created2012-02-06-
dc.date.created2012-02-06-
dc.date.issued2009-08-
dc.identifier.citationSCIENCE OF THE TOTAL ENVIRONMENT, v.407, no.16, pp.4723 - 4730-
dc.identifier.issn0048-9697-
dc.identifier.urihttp://hdl.handle.net/10203/10106-
dc.description.abstractExposure to bacterial bioaerosols can have adverse effects on health, such as infectious diseases, acute toxic effects, and allergies. The search for ways of preventing and curing the harmful effects of bacterial bioaerosols has created a strong demand for the study and development of an efficient method of controlling bioaerosols. We investigated the thermal effects on bacterial bioaerosols of Escherichia coli and Bacillus subtilis by using a thermal electric heating system in continuous air flow. The bacterial bioaerosols were exposed to a surrounding temperature that ranged from 20 degrees C to 700 degrees C for about 0.3 s. Both E coli and B. subtilis vegetative cells were rendered more than 99.9% inactive at 160 degrees C and 350 degrees C of wall temperature of the quartz tube, respectively. Although the data on bacterial injury showed that the bacteria tended to sustain greater damage as the surrounding temperature increased, Gram-negative E coli was highly sensitive to structural injury but Gram-positive B. subtilis was slightly more sensitive to metabolic injury. In addition, the inactivation of E coli endotoxins was found to range from 9.2% (at 200 degrees C) to 82.0% (at 700 degrees C). However, the particle size distribution and morphology of both bacterial bioaerosols were maintained, despite exposure to a surrounding temperature of 700 degrees C. Our results show that thermal heating in a continuous air flow can be used with short exposure time to control bacterial bioaerosols by rendering the bacteria and endotoxins to a large extent inactive. This result could also be useful for developing more effective thermal treatment strategies for use in air purification or sterilization systems to control bioaerosols. (c) 2009 Elsevier B.V. All rights reserved.-
dc.description.sponsorshipThe authors would like to express their gratitude for financial support from the Brain Korea 21 program of the Ministry of Education, South Korea.en
dc.languageEnglish-
dc.language.isoen_USen
dc.publisherELSEVIER SCIENCE BV-
dc.subjectDRY-HEAT DESTRUCTION-
dc.subjectSHORT-TIME PASTEURIZATION-
dc.subjectSMALL CERAMIC HEATER-
dc.subjectESCHERICHIA-COLI-
dc.subjectHIGH-TEMPERATURE-
dc.subjectULTRAVIOLET-RADIATION-
dc.subjectRELATIVE HUMIDITY-
dc.subjectAIRBORNE BACTERIA-
dc.subjectDISTILLED WATER-
dc.subjectREAL-TIME-
dc.titleThermal effects on bacterial bioaerosols in continuous air flow-
dc.typeArticle-
dc.identifier.wosid000267839200022-
dc.identifier.scopusid2-s2.0-67349126944-
dc.type.rimsART-
dc.citation.volume407-
dc.citation.issue16-
dc.citation.beginningpage4723-
dc.citation.endingpage4730-
dc.citation.publicationnameSCIENCE OF THE TOTAL ENVIRONMENT-
dc.identifier.doi10.1016/j.scitotenv.2009.05.008-
dc.embargo.liftdate9999-12-31-
dc.embargo.terms9999-12-31-
dc.contributor.localauthorKim, Sang Soo-
dc.contributor.nonIdAuthorLee, Jung Eun-
dc.type.journalArticleArticle-
dc.subject.keywordAuthorBacterial bioaerosols-
dc.subject.keywordAuthorThermal electric heating system-
dc.subject.keywordAuthorAir sterilization-
dc.subject.keywordAuthorAirborne bacterial endotoxin-
dc.subject.keywordAuthorRelative recovery-
dc.subject.keywordPlusDRY-HEAT DESTRUCTION-
dc.subject.keywordPlusSHORT-TIME PASTEURIZATION-
dc.subject.keywordPlusSMALL CERAMIC HEATER-
dc.subject.keywordPlusESCHERICHIA-COLI-
dc.subject.keywordPlusHIGH-TEMPERATURE-
dc.subject.keywordPlusULTRAVIOLET-RADIATION-
dc.subject.keywordPlusRELATIVE HUMIDITY-
dc.subject.keywordPlusAIRBORNE BACTERIA-
dc.subject.keywordPlusDISTILLED WATER-
dc.subject.keywordPlusREAL-TIME-
Appears in Collection
ME-Journal Papers(저널논문)
Files in This Item
This item is cited by other documents in WoS
⊙ Detail Information in WoSⓡ Click to see webofscience_button
⊙ Cited 31 items in WoS Click to see citing articles in records_button

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0