The Effectiveness of Various Biofiltration Substrates in Removing Bacteria, Endotoxins, and Dust from Ventilation System Exhaust from a Chicken Hatchery

Abstract

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.

The Antifungal Properties of Peppermint and Thyme Essential Oils Misted in Broiler Houses

“…The airborne fungi concentration at the beginning of the production cycle approached 3 log 10 CFU/m 3 , which is considered a risk for respiratory disease in animals (Dutkiewicz et al, 1994). Proper hygienic standards are required for adequate animal welfare, and methods for the sanitation of poultry environments are described by different researchers (Tymczyna et al, 2007;Witkowska et al, 2007;Mituniewicz et al, 2008;Bakutis et. al., 2011).…”

Silver nanoparticles as an effective disinfectant: A review

“…Various microorganisms and their endotoxins are responsible for the infectious diseases and spread in the environment through bioaerosols called organic dust. This organic dust is reaching about three kilometers away from the place of its formation and causes serious respiratory tract infections [85,86]. A lot of efforts have been made to conquer such infections by eco-friendly ways without having a negative impact on human health.…”

Additionele maatregelen ter vermindering van emissies van bioaerosolen uit stallen: verkenning van opties, kosten en effecten op de gezondheidslast van omwonenden = Additional measures to reduce emissions of bioaerosols from animal houses: exploration of options, costs, and effects on health of neighbouring residents

“…Sinds eind jaren tachtig van de vorige eeuw is het perspectief van biobedden onderzocht in varkensstallen (Demmers and Uenk, 1996;Donkers, 1986;Eggels et al, 1989;Seedorf and Hartung, 1999;Uenk et al, 1993; Van de Sande-Schellekens and Backus, 1993) en meer recent -naast varkensstallen -tevens in pluimvee-en rundveestallen (Arends et al, 2006;Melse and Hol, 2012;Melse et al, 2014a;Melse et al, 2014b;Nicolai and Janni, 1999;Tymczyna et al, 2007;Winkel et al, 2010 (Adrizal et al, 2008;Burley et al, 2011;Erbrink et al, 2009;Hofschreuder, 2008;Oosterbaan et al, 2009;Dijk, 2012, 2013;Pronk et al, 2014;Pronk et al, 2015;Pronk et al, 2013a;Pronk et al, 2013b;Wesseling et al, 2011). Uit dit onderzoek is gebleken dat het aandeel van de ventilatielucht dat daadwerkelijk door het groenelement stroomt kan variëren tussen 20 en 70%, Vegetatieve buffers (13.5) vergen het opstellen van een beplantingsplan en het aanleggen van de beplanting.…”