Pilot Plant for the Capture of Ammonia from the Atmosphere of Pig and Poultry Farms Using Gas-Permeable Membrane Technology

Gas-permeable membrane (GPM) technology is a possible solution to reduce ammonia (NH<sub>3</sub>) emissions from livestock housing. This paper presents the results obtained with an NH<sub>3</sub>-capture prototype based on the use of expanded polytetrafluoroethylene (ePTFE) m...

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Autores principales:	María Soto-Herranz, Mercedes Sánchez-Báscones, Juan Manuel Antolín-Rodríguez, Pablo Martín-Ramos
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	ammonia capture livestock housing gas-permeable membranes ventilation rate seasonal variability of ammonia emissions Chemical technology TP1-1185 Chemical engineering TP155-156
Acceso en línea:	https://doaj.org/article/26debc50cb88462da7b46aeedc4f8a67
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spelling	oai:doaj.org-article:26debc50cb88462da7b46aeedc4f8a672021-11-25T18:19:52ZPilot Plant for the Capture of Ammonia from the Atmosphere of Pig and Poultry Farms Using Gas-Permeable Membrane Technology10.3390/membranes111108592077-0375https://doaj.org/article/26debc50cb88462da7b46aeedc4f8a672021-11-01T00:00:00Zhttps://www.mdpi.com/2077-0375/11/11/859https://doaj.org/toc/2077-0375Gas-permeable membrane (GPM) technology is a possible solution to reduce ammonia (NH<sub>3</sub>) emissions from livestock housing. This paper presents the results obtained with an NH<sub>3</sub>-capture prototype based on the use of expanded polytetrafluoroethylene (ePTFE) membranes in real conditions in a gestating sow house and a free-range laying hen house, comparing them with the results obtained in controlled laboratory conditions for the same type of waste. The NH<sub>3</sub> present in the air of the livestock housing was captured by reaction with an acidic solution flowing inside the membranes. The periods of continuous operation of the pilot plant were 232 days at the pig farm and 256 days at the poultry farm. The NH<sub>3</sub> recovery rate at the end of those periods was 2.3 and 0.4 g TAN·m<sup>−2</sup>·d<sup>−1</sup> in the pig and the poultry farms, respectively. The limiting factor for the capture process was the NH<sub>3</sub> concentration in the air, with the highest recovery occurring in the most concentrated atmosphere. Differences in NH<sub>3</sub> capture were observed between seasons and farms, with capture efficiencies of 1.62 and 0.33 g·m<sup>−2</sup>·d<sup>−1</sup> in summer and 3.85 and 1.20 g·m<sup>−2</sup>·d<sup>−1</sup> in winter for pig and poultry farms, respectively. The observed differences were mainly due to the higher ventilation frequency in the summer months, which resulted in a lower NH<sub>3</sub> concentration inside the houses compared to the winter months. This is especially important when considering the real applicability of this technology. The results obtained suggest that GPM technology holds promise for limiting NH<sub>3</sub> emissions from livestock housing with NH<sub>3</sub> ambient concentrations close to 20 ppm or as part of manure storage facilities, given that it allows for recovery of nitrogen in a stable and concentrated solution, which can be used as a fertilizer.María Soto-HerranzMercedes Sánchez-BásconesJuan Manuel Antolín-RodríguezPablo Martín-RamosMDPI AGarticleammonia capturelivestock housinggas-permeable membranesventilation rateseasonal variability of ammonia emissionsChemical technologyTP1-1185Chemical engineeringTP155-156ENMembranes, Vol 11, Iss 859, p 859 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	ammonia capture livestock housing gas-permeable membranes ventilation rate seasonal variability of ammonia emissions Chemical technology TP1-1185 Chemical engineering TP155-156
spellingShingle	ammonia capture livestock housing gas-permeable membranes ventilation rate seasonal variability of ammonia emissions Chemical technology TP1-1185 Chemical engineering TP155-156 María Soto-Herranz Mercedes Sánchez-Báscones Juan Manuel Antolín-Rodríguez Pablo Martín-Ramos Pilot Plant for the Capture of Ammonia from the Atmosphere of Pig and Poultry Farms Using Gas-Permeable Membrane Technology
description	Gas-permeable membrane (GPM) technology is a possible solution to reduce ammonia (NH<sub>3</sub>) emissions from livestock housing. This paper presents the results obtained with an NH<sub>3</sub>-capture prototype based on the use of expanded polytetrafluoroethylene (ePTFE) membranes in real conditions in a gestating sow house and a free-range laying hen house, comparing them with the results obtained in controlled laboratory conditions for the same type of waste. The NH<sub>3</sub> present in the air of the livestock housing was captured by reaction with an acidic solution flowing inside the membranes. The periods of continuous operation of the pilot plant were 232 days at the pig farm and 256 days at the poultry farm. The NH<sub>3</sub> recovery rate at the end of those periods was 2.3 and 0.4 g TAN·m<sup>−2</sup>·d<sup>−1</sup> in the pig and the poultry farms, respectively. The limiting factor for the capture process was the NH<sub>3</sub> concentration in the air, with the highest recovery occurring in the most concentrated atmosphere. Differences in NH<sub>3</sub> capture were observed between seasons and farms, with capture efficiencies of 1.62 and 0.33 g·m<sup>−2</sup>·d<sup>−1</sup> in summer and 3.85 and 1.20 g·m<sup>−2</sup>·d<sup>−1</sup> in winter for pig and poultry farms, respectively. The observed differences were mainly due to the higher ventilation frequency in the summer months, which resulted in a lower NH<sub>3</sub> concentration inside the houses compared to the winter months. This is especially important when considering the real applicability of this technology. The results obtained suggest that GPM technology holds promise for limiting NH<sub>3</sub> emissions from livestock housing with NH<sub>3</sub> ambient concentrations close to 20 ppm or as part of manure storage facilities, given that it allows for recovery of nitrogen in a stable and concentrated solution, which can be used as a fertilizer.
format	article
author	María Soto-Herranz Mercedes Sánchez-Báscones Juan Manuel Antolín-Rodríguez Pablo Martín-Ramos
author_facet	María Soto-Herranz Mercedes Sánchez-Báscones Juan Manuel Antolín-Rodríguez Pablo Martín-Ramos
author_sort	María Soto-Herranz
title	Pilot Plant for the Capture of Ammonia from the Atmosphere of Pig and Poultry Farms Using Gas-Permeable Membrane Technology
title_short	Pilot Plant for the Capture of Ammonia from the Atmosphere of Pig and Poultry Farms Using Gas-Permeable Membrane Technology
title_full	Pilot Plant for the Capture of Ammonia from the Atmosphere of Pig and Poultry Farms Using Gas-Permeable Membrane Technology
title_fullStr	Pilot Plant for the Capture of Ammonia from the Atmosphere of Pig and Poultry Farms Using Gas-Permeable Membrane Technology
title_full_unstemmed	Pilot Plant for the Capture of Ammonia from the Atmosphere of Pig and Poultry Farms Using Gas-Permeable Membrane Technology
title_sort	pilot plant for the capture of ammonia from the atmosphere of pig and poultry farms using gas-permeable membrane technology
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/26debc50cb88462da7b46aeedc4f8a67
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Pilot Plant for the Capture of Ammonia from the Atmosphere of Pig and Poultry Farms Using Gas-Permeable Membrane Technology

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