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Suitability of Different Filling Materials for a Biofilter at a Broiler Fattening Facility in Terms of Ammonia and Odour Reduction

Institute of Agricultural Engineering, University of Bonn, Nußallee 5, 53115 Bonn, Germany
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Atmosphere 2020, 11(1), 13; https://doi.org/10.3390/atmos11010013
Received: 1 December 2019 / Revised: 17 December 2019 / Accepted: 18 December 2019 / Published: 21 December 2019
(This article belongs to the Special Issue Livestock Odor and Air Quality)
A two-stage exhaust air treatment system installed at a broiler fattening facility with 40,000 animals was investigated. The facility’s exhaust air was treated first by use of a chemo-scrubber (stage 1) and afterwards by a vertical biofilter (stage 2). The biofilter was equipped with root wood and honeycombed paper pad layers (half/half) to enable a direct comparison of both filter materials’ suitability. Odour samples were taken on site and afterwards analysed at an olfactometry laboratory. Ammonia concentration values were collected continuously using a photoacoustic multi-gas monitor. High mitigation performance was achieved with both filter materials, with the honeycombed paper pad layer being less susceptible to fungal growth than the root wood filter. Cellulose seems to be a proper alternative for use in biofilters, but further research is needed to estimate the long-term stability of this material. View Full-Text
Keywords: broiler chicken; mitigation strategies; treatment technologies; odour; emission; exhaust air treatment; root wood; chemical scrubber; air quality; paper pads broiler chicken; mitigation strategies; treatment technologies; odour; emission; exhaust air treatment; root wood; chemical scrubber; air quality; paper pads
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Strohmaier, C.; Krommweh, M.S.; Büscher, W. Suitability of Different Filling Materials for a Biofilter at a Broiler Fattening Facility in Terms of Ammonia and Odour Reduction. Atmosphere 2020, 11, 13.

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