A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Continuous odour measurement from fattening pig units
Abstract A study in experimental slatted-system fattening pig units was conducted with the aim of estimating the odour emission factor (in ou s.pig−1), which can subsequently be used in dispersion models to assess the odour annoyance zone. Dynamic olfactometry measurements carried out at different development stages of pigs showed a logical trend of the mean assessed odour emission factor with the pig mass. However, the variation within the same mass class was much larger than variation between classes. Possible causes of such variation were identified as the evolution of ventilation rate during the day and the circadian rhythm of pig. To be able to monitor continuously the daily variation of the odour, an electronic nose was used with suitable regression model calibrated against olfactometric measurements. After appropriate validation check, the electronic nose proved to be convenient, as a complementary tool to dynamic olfactometry, to record the daily variation of the odour emission factor in the pig barn. It was demonstrated that, in the controlled conditions of the experimental pens, the daily variation of the odour emission rate could be mainly attributed to the sole influence of the circadian rhythm of pig. As a consequence, determining a representative odour emission factor in a real case cannot be based on a snapshot odour sampling.
Highlights We carried out odour concentration measurements in experimental pig barns. Gas monitoring in the same barns suggested a daily variation of odour emission factor. We used an electronic nose calibrated against odour measurements to monitor continuously the odour in the fattening pig units. We predicted the diurnal evolution of the odour emission factor. We shown that its daily pattern could be explained by the circadian activity of pigs.
Continuous odour measurement from fattening pig units
Abstract A study in experimental slatted-system fattening pig units was conducted with the aim of estimating the odour emission factor (in ou s.pig−1), which can subsequently be used in dispersion models to assess the odour annoyance zone. Dynamic olfactometry measurements carried out at different development stages of pigs showed a logical trend of the mean assessed odour emission factor with the pig mass. However, the variation within the same mass class was much larger than variation between classes. Possible causes of such variation were identified as the evolution of ventilation rate during the day and the circadian rhythm of pig. To be able to monitor continuously the daily variation of the odour, an electronic nose was used with suitable regression model calibrated against olfactometric measurements. After appropriate validation check, the electronic nose proved to be convenient, as a complementary tool to dynamic olfactometry, to record the daily variation of the odour emission factor in the pig barn. It was demonstrated that, in the controlled conditions of the experimental pens, the daily variation of the odour emission rate could be mainly attributed to the sole influence of the circadian rhythm of pig. As a consequence, determining a representative odour emission factor in a real case cannot be based on a snapshot odour sampling.
Highlights We carried out odour concentration measurements in experimental pig barns. Gas monitoring in the same barns suggested a daily variation of odour emission factor. We used an electronic nose calibrated against odour measurements to monitor continuously the odour in the fattening pig units. We predicted the diurnal evolution of the odour emission factor. We shown that its daily pattern could be explained by the circadian activity of pigs.
Continuous odour measurement from fattening pig units
Romain, Anne-Claude (author) / Nicolas, Jacques (author) / Cobut, Pierre (author) / Delva, Julien (author) / Nicks, Baudouin (author) / Philippe, François-Xavier (author)
Atmospheric Environment ; 77 ; 935-942
2013-06-12
8 pages
Article (Journal)
Electronic Resource
English
Odour control - Enveloping odour emissions: Discussing odour management at Reading WwTW
Online Contents | 2003
COMPARISON OF FOUR SETBACK MODELS WITH FIELD ODOUR PLUME MEASUREMENT BY TRAINED ODOUR SNIFFERS
| British Library Online Contents | 2006
Odour reduction on plastics and its measurement
| British Library Online Contents | 1999
Odour measurement - factors affecting olfactometry panel performance
| British Library Conference Proceedings | 1996