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Article

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

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Departamento de Ciencias Agroforestales, ETSIIAA, Universidad de Valladolid, Avenida de Madrid 44, 34004 Palencia, Spain
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Instituto Universitario de Investigación en Ciencias Ambientales de Aragón (IUCA), EPS, Universidad de Zaragoza, Carretera Cuarte s/n, 22071 Huesca, Spain
*
Author to whom correspondence should be addressed.
Academic Editors: Tymen Visser, Oguz Karvan and Alberto Tena
Membranes 2021, 11(11), 859; https://doi.org/10.3390/membranes11110859
Received: 19 October 2021 / Revised: 2 November 2021 / Accepted: 5 November 2021 / Published: 7 November 2021
Gas-permeable membrane (GPM) technology is a possible solution to reduce ammonia (NH3) emissions from livestock housing. This paper presents the results obtained with an NH3-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 NH3 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 NH3 recovery rate at the end of those periods was 2.3 and 0.4 g TAN·m−2·d−1 in the pig and the poultry farms, respectively. The limiting factor for the capture process was the NH3 concentration in the air, with the highest recovery occurring in the most concentrated atmosphere. Differences in NH3 capture were observed between seasons and farms, with capture efficiencies of 1.62 and 0.33 g·m−2·d−1 in summer and 3.85 and 1.20 g·m−2·d−1 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 NH3 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 NH3 emissions from livestock housing with NH3 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. View Full-Text
Keywords: ammonia capture; livestock housing; gas-permeable membranes; ventilation rate; seasonal variability of ammonia emissions ammonia capture; livestock housing; gas-permeable membranes; ventilation rate; seasonal variability of ammonia emissions
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MDPI and ACS Style

Soto-Herranz, M.; Sánchez-Báscones, M.; Antolín-Rodríguez, J.M.; Martín-Ramos, P. Pilot Plant for the Capture of Ammonia from the Atmosphere of Pig and Poultry Farms Using Gas-Permeable Membrane Technology. Membranes 2021, 11, 859. https://doi.org/10.3390/membranes11110859

AMA Style

Soto-Herranz M, Sánchez-Báscones M, Antolín-Rodríguez JM, Martín-Ramos P. Pilot Plant for the Capture of Ammonia from the Atmosphere of Pig and Poultry Farms Using Gas-Permeable Membrane Technology. Membranes. 2021; 11(11):859. https://doi.org/10.3390/membranes11110859

Chicago/Turabian Style

Soto-Herranz, María, Mercedes Sánchez-Báscones, Juan Manuel Antolín-Rodríguez, and Pablo Martín-Ramos. 2021. "Pilot Plant for the Capture of Ammonia from the Atmosphere of Pig and Poultry Farms Using Gas-Permeable Membrane Technology" Membranes 11, no. 11: 859. https://doi.org/10.3390/membranes11110859

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