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Parameters determining the use of zeolite 5A as collector medium in passive flux samplers to estimate N2O emissions from livestock sources.

Larios, Araceli D.; Brar, Satinder Kaur; Ramírez, Antonio Avalos; Godbout, Stéphane; Sandoval-Salas, Fabiola; Palacios, Joahnn H.; Dubé, Patrick; Delgado, Beatriz; Giroir-Fendler, Anne (2017). Parameters determining the use of zeolite 5A as collector medium in passive flux samplers to estimate N2O emissions from livestock sources. Environmental Science and Pollution Research , vol. 24 , nº 13. p. 12136-12143. DOI: 10.1007/s11356-017-8831-x.

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Résumé

The present study analyzes the effect of parameters that determine the use of the zeolite 5A as collector medium in passive flux samplers (PFS) developed to estimate N₂O emissions from livestock buildings. The study analyzes the mass of N₂O collected on the zeolite 5A as a function of gas flow rate (40 and 130 ml/min), inlet mass of N₂O to the PFS (from 7 to 84 μg), adsorbent mass (4 and 13.6 g), length of the adsorbent bed (1.9 and 10.9 cm), and inlet N₂O concentration (0.6 and 2 ppmv). The mass of N₂O collected on the zeolite 5A ranged from 1.24 to 6.19 μg of N₂O/g of adsorbent, which was mainly affected by inlet N₂O concentration and mass of adsorbent contained in the PFS. The mass of N₂O collected presented a significant relationship with the inlet N₂O concentration and the adsorbent bed. Tests were performed using PFS in a laboratory farm under semi-real conditions. It was found that at sampling time of 1.5 h, the accuracy and precision of PFS was appropriate. Under evaluated conditions, a maximum variation between PFS and direct detection of around 12% was estimated.

Type de document: Article
Mots-clés libres: greenhouse gases; N₂O; passive flux sampling; zeolite 5A; adsorption capacity; breakthrough time
Centre: Centre Eau Terre Environnement
Date de dépôt: 12 févr. 2018 21:29
Dernière modification: 12 févr. 2018 21:29
URI: http://espace.inrs.ca/id/eprint/5187

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