Authors: Xavier Verg?, Marie-Hermeline Roz? , Youssef Fouad, Paul Robin, Marc Foug?re, Elise Lorinquer
Published in: CSBE-SCGAB Technical Conferences » 5th CIGR and AGM Quebec City 2021 » Regular Sessions
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Description: To keep pace with the growing demand for animal products, the livestock sector must minimizes its environmental impacts and ensures its sustainability. Routine measurements of ammonia emissions from commercial cattle building soils is necessary to check whether ?good practices? and equipment achieve expected emission reductions. The EMISOL BV method presented here has been design for measuring ammonia emissions from farm soil buildings. It combines point source measurements using a ventilated semi-static chamber and calculations to estimate the measured emissions to the entire building.
To develop this method, we used 1- the chamber by comparing observed emissions to the measured ammonia emissions of ?traceable solutions? (Na2CO3 and (NH4)2SO4 in aqueous solution) and to the calculated ammonia theoretically emitted and 2- the Near Infra-Red Spectroscopy (NIRS) measurements carried out in an experimental farm to evaluate the heterogeneity of the animal excreta in the building.
The detection limit is associated to the following manure characteristics: pH=7.15 and ammonia nitrogen content of 0.518 kg N-NH4+ m-3.
From the spectra obtained with the NIRS 3 soiling classes have been identified.
In the short term, the method can be deployed by a trained public. In the longer term, calibrations with the chambers will associate emission levels to the soiled classes and a model will then be developed to evaluate the NH3 emissions from buildings based on the NIRS observations only.
Conference name: 5th CIGR International Conference and CSBE-SCGAB AGM 2021, Quebec City,QC, 11-14 May 2021.
Session name: Animal Systems 2 - Animal Welfare and Biosecurity
Publication type: Presentation
Language 1: en
Rights: Canadian Society for Bioengineering