The effectiveness of various biofiltration substrates in removing bacteria, endotoxins, and dust from ventilation system exhaust from a chicken hatchery.
The objective of this study was to evaluate the effectiveness of various organic and organic-mineral biofilter media in purifying ventilation exhaust from a chicken hatchery room. Three different substrates were tested. Efficiency levels for the removal of dust, gram-negative bacteria, and bacterial endotoxin were recorded. The microbiological properties of the substrates were also studied. All of the biofilter substrates were highly effective in removing gram-negative bacteria, moderately effective in reducing dust levels, and only slightly effective in removing endotoxin. The substrate that was most efficient in retaining bioaerosols was the organic-mineral medium containing 20% halloysite, 40% compost, and 40% peat, which generally had at least satisfactory efficiency values for removing all of the contaminants tested.
Tymczyna
L
L
Department of Animal Hygiene and Environment, Faculty of Biology and Animal Breeding, University of Agriculture in Lublin, 20-950 Lublin, Poland. leszek.tymczyna@ar.lublin.pl
Chmielowiec-Korzeniowska
A
A
Drabik
A
A
D000391:Air Microbiology; D000822:Animal Husbandry / Q000295:instrumentation / Q000379:methods; D000818:Animals; D001419:Bacteria / Q000302:isolation & purification*; D002645:Chickens / Q000502:physiology; D004391:Dust / Q000517:prevention & control*; D004731:Endotoxins / Q000302:isolation & purification*; D005260:Female; D005374:Filtration / Q000295:instrumentation; D006799:Housing, Animal; D014691:Ventilation / Q000295:instrumentation* / Q000379:methods
D004391:Dust; D004731:Endotoxins