Effect of free ammonia nitrogen on the methanogenic activity of swine wastewater



Título del documento: Effect of free ammonia nitrogen on the methanogenic activity of swine wastewater
Revista: Electronic journal of biotechnology
Base de datos: PERIÓDICA
Número de sistema: 000398043
ISSN: 0717-3458
Autores: 1
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2
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Instituciones: 1Universidad de Concepción, Grupo de Ingeniería y Gestión Ambiental, Concepción. Chile
2Universidad de Santiago de Compostela, Escuela Técnica Superior de Ingeniería, Santiago de Compostela, La Coruña. España
Año:
Volumen: 14
Número: 3
Paginación: 1-9
País: Chile
Idioma: Inglés
Tipo de documento: Artículo
Enfoque: Analítico, descriptivo
Resumen en inglés Swine wastewater is characterized by high organic matter content, solids, nitrogen (express ed as total ammonia and protein) and heavy metals. This work determines the methanogenic toxicity effect of free ammonia contained in swine wastewater comparing raw swine wastewater (RW) and the liquid fraction of swine wastewater (TW). The values of IC 50 (50% of inhibition) obtained for methanogenic bacteria ranged between 56 and 84% for RW, meanwhile IC 50 for TW was ranged between 84 and 94%. Such inhibitory effects can be related to the free ammonia nitrogen concentration (> 40 mg NH 3 -N/L) contained in swine wastewater
Disciplinas: Química,
Biología,
Ingeniería
Palabras clave: Bioquímica,
Ecología,
Ingeniería ambiental,
Nitrógeno,
Metanogénesis,
Aguas residuales,
Ganadería,
Contaminación
Keyword: Chemistry,
Biology,
Engineering,
Biochemistry,
Ecology,
Environmental engineering,
Nitrogen,
Methanogenesis,
Waste water,
Livestock,
Pollution
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