\n Read more <\/a>\n <\/div>\n <\/div>\n\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n","protected":false},"excerpt":{"rendered":"The microbial composition of indoor bioaerosol is very important for the health and well-being of occupants of these
\nspaces. The efficiency of the ventilation system is crucial in providing proper quality of that. The study aimed to assess
\nthe impact of the ozonation carried out under a changeable ventilation air flow rate on airborne microflora. Studies
\nwere conducted in a chemical laboratory with four-level force mechanical ventilation. An ozone generator with an
\nefficiency of 1000 g O3\/min was used. The impact method was used for the sampling of airborne bacteria and fungi.
\nThe number of psychrophilic, mesophilic bacteria and fungi was estimated as CFU\/m3. For the growth of bacteria and
\nfungi TSA and Sabouraud medium was used respectively. Temperature, relative humidity (RH), volumetric air flow rate
\n(VFR), and ozone concentration were measured. The average minimum ozone concentration reached after 20 minutes
\nof work of one ozone generator was 0.23 ppm (VFR 0.036 m3\/s) and the average maximum concentration was
\n0.585 ppm (VFR 0.004 m3\/s) which resulted in the reduction of number of mesophiles 31.7%, 70.2% and
\npsychrophiles 32.7%, 75.3% respectively. After simultaneous work of two ozone generators the average ozone
\nconcentration was 0.96 ppm (VFR 0.122 m3\/s) resulted in disinfection efficiency 43.5% and 9.7% respectively. It was
\ndifficult to find any tendency of elimination of fungi. The increase of RH of air cause increase the ozonation efficiency
\ntowards the airborne fungi, which was not observed in the case of bacteria. The results of disinfection efficiency carried
\nout in the real conditions showed that the number of the airborne bacteria detected after ozonation depended on the
\nbiocidal effect of ozone concentration as well as the value of the VFR and time of exposition. <\/p>\n","protected":false},"featured_media":0,"parent":0,"menu_order":0,"template":"","meta":[],"tags":[1426,3540,3541,4224,3910,3543,3824,745],"tematyka":[488],"class_list":["post-21446","artykul","type-artykul","status-publish","hentry","tag-air-quality","tag-airborne-bacteria","tag-airborne-fungi","tag-bioaerosol","tag-disinfection","tag-indoor-air","tag-mechanical-ventilation","tag-ozonation","tematyka-ventilation-air-conditioning-cooling","has-post-title","has-post-date","has-post-category","has-post-tag","has-post-comment","has-post-author",""],"ptb_metabox":{"ptb_artykul_text_1":["WALTER MUCHA","EWA ZAB\u0141OCKA-GODLEWSKA","ALEKSANDRA MIERZEJOWSKA","ALEX BORKOWSKI","ALEKSANDRA BIENIEK","KINGA BISKUP","KAMIL FOIT","KAROLINA HULBOJ","KAMIL KRAWCZYK"],"ptb_artykul_text_2":"10.36119\/15.2024.4.3","ptb_artykul_numer_miesi_cznika":"04\/2024 Instal pp.25-31","ptb_artykul_info_autor":"Walter Mucha https:\/\/orcid.org\/0000-0002-7476-0614 \u2012 DSc; The Silesian University of Technology, Faculty of Energy and Environmental Engineering, Department of Air Protection, Gliwice, Poland Ewa Zab\u0142ocka-Godlewska https:\/\/orcid.org\/0000-0002-4212-8913 \u2012 Associate Prof.; The Silesian University of Technology, Faculty of Energy and Environmental Engineering, Department of Air Protection, Gliwice, Poland Aleksandra Mierzejowska https:\/\/orcid.org\/0000-0003-0191-5782 \u2012 DSc; The Silesian University of Technology, Faculty of Faculty of Mining, Safety Engineering and Industrial Automation, Department of Geoengineering and Raw Materials Extraction, Gliwice, Poland, Alex Borkowski, Aleksandra Bieniek, Kinga Biskup, Kamil Foit, Karolina Hulboj, Kamil Krawczyk \u2012 Student of The Silesian University of Technology, Gliwice, Poland\r\nCorresponding author: E-mail address: walter.mucha@polsl.p","ptb_artykul_orcid":["0000-0002-7476-0614","0000-0002-4212-8913","0000-0003-0191-5782"]},"ptb_taxonomy":{"post_tag":[{"term_id":1426,"name":"air quality","slug":"air-quality","term_group":0,"term_taxonomy_id":1426,"taxonomy":"post_tag","description":"","parent":0,"count":4,"filter":"raw"},{"term_id":3540,"name":"airborne bacteria","slug":"airborne-bacteria","term_group":0,"term_taxonomy_id":3540,"taxonomy":"post_tag","description":"","parent":0,"count":2,"filter":"raw"},{"term_id":3541,"name":"airborne fungi","slug":"airborne-fungi","term_group":0,"term_taxonomy_id":3541,"taxonomy":"post_tag","description":"","parent":0,"count":2,"filter":"raw"},{"term_id":4224,"name":"bioaerosol","slug":"bioaerosol","term_group":0,"term_taxonomy_id":4224,"taxonomy":"post_tag","description":"","parent":0,"count":2,"filter":"raw"},{"term_id":3910,"name":"disinfection","slug":"disinfection","term_group":0,"term_taxonomy_id":3910,"taxonomy":"post_tag","description":"","parent":0,"count":2,"filter":"raw"},{"term_id":3543,"name":"indoor air","slug":"indoor-air","term_group":0,"term_taxonomy_id":3543,"taxonomy":"post_tag","description":"","parent":0,"count":4,"filter":"raw"},{"term_id":3824,"name":"mechanical ventilation","slug":"mechanical-ventilation","term_group":0,"term_taxonomy_id":3824,"taxonomy":"post_tag","description":"","parent":0,"count":2,"filter":"raw"},{"term_id":745,"name":"ozonation","slug":"ozonation","term_group":0,"term_taxonomy_id":745,"taxonomy":"post_tag","description":"","parent":0,"count":4,"filter":"raw"}],"tematyka":[{"term_id":488,"name":"Ventilation, air conditioning, cooling","slug":"ventilation-air-conditioning-cooling","term_group":0,"term_taxonomy_id":488,"taxonomy":"tematyka","description":"","parent":0,"count":64,"filter":"raw"}]},"ptb_featured_image":null,"builder_content":" Read more <\/a>","_links":{"self":[{"href":"https:\/\/informacjainstal.com.pl\/en\/wp-json\/wp\/v2\/artykul\/21446","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/informacjainstal.com.pl\/en\/wp-json\/wp\/v2\/artykul"}],"about":[{"href":"https:\/\/informacjainstal.com.pl\/en\/wp-json\/wp\/v2\/types\/artykul"}],"wp:attachment":[{"href":"https:\/\/informacjainstal.com.pl\/en\/wp-json\/wp\/v2\/media?parent=21446"}],"wp:term":[{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/informacjainstal.com.pl\/en\/wp-json\/wp\/v2\/tags?post=21446"},{"taxonomy":"tematyka","embeddable":true,"href":"https:\/\/informacjainstal.com.pl\/en\/wp-json\/wp\/v2\/tematyka?post=21446"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}