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The dynamics of ammonia release from animal wastewater as influenced by the release of dissolved carbon dioxide and gas bubbles



The dynamics of ammonia release from animal wastewater as influenced by the release of dissolved carbon dioxide and gas bubbles



Atmospheric Environment 45(29): 5110-5118



The largest global source of atmospheric ammonia is animal wastewater. Previous models to predict the release of ammonia from animal wastewater have focused on undisturbed conditions. However in animal facilities the surface of wastewater is constantly disturbed due to liquid addition and wastewater management. This paper presents a gas emission-pH-film model (GE-pH-film model) that describes the dynamics of ammonia release from swine wastewater after surface liquid disturbances, considering volatilization of dissolved carbon dioxide, surface pH changes, bubble-enhanced ammonia volatilization and surface film formation. The GE-pH-film model improved the accuracy of estimated ammonia release during the first 1h after liquid disturbance.

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Accession: 036127940

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DOI: 10.1016/j.atmosenv.2011.06.032


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