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This work was supported by the project Life -MEGA [LIFE18 ENV/IT/000200] , which has received funding from the Life programme of the European Union. The content, discussion and opinions of this article are fully attributable to the authors and may not in any circumstances be regarded as stating an official position of the European Commission.

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Air treatment technologies in pig farms. Life cycle assessment of dry and wet scrubbers in Northern Italy and Northeastern Spain

Publicado en:Science Of The Total Environment. 922 171197- - 2024-04-20 922(), DOI: 10.1016/j.scitotenv.2024.171197

Autores: Ruiz-Colmenero, Marta; Costantini, Michele; Ballega, Ariadna; Zoli, Michele; Andon, Miquel; Cerrillo, Miriam; Fabrega, Emma; Bonmati, August; Guarino, Marcella; Bacenetti, Jacopo

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Over the years, different solutions were developed and tested to reduce the emissions of ammonia and particulate matter from the livestock facilities. The environmental performances of these solutions were not always evaluated in detail. This study examines the environmental footprint of pig production at farm gate, with a focus on emissions from housing. Using Life Cycle Assessment, the environmental impact of pig production in a transition farm in Spain and in two finishing farms in Italy was evaluated considering three scenarios (one baseline and two of them involving an air treatment technology: wet scrubber or dry scrubber). The study goal was to quantify the environmental footprint of pig production in different scenarios, identify key environmental hotspots, and to assess impact reduction efficiency due to the two assessed technologies, analyze the environmental trade-offs that come with the use of these technologies, and identify potential for improvements. Both wet and dry scrubbers showed potential for reducing emissions in pig housing, affecting environmental impact categories related to air pollutants such as particulate matter, acidification and eutrophication. However, there were trade-offs between emissions reduction and categories related to energy and resource use. The infrastructure and consumables required to operate the scrubber added to the impacts compared to the baseline. The dry scrubber showed a more favorable balance between emission reduction and trade-offs. In this regard, results were similar for the Spanish and Italian farms, although there were slight variations. Scrubbers had a

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