A systematic study of the gaseous emissions from biosolids composting : raw sludge versus anaerobically digested sludge

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(Universitat Autònoma de Barcelona. Departament d'Enginyeria Química, Biològica i Ambiental)
Font i Segura, Xavier

(Universitat Autònoma de Barcelona. Departament d'Enginyeria Química, Biològica i Ambiental)
Sanchez, Antoni

(Universitat Autònoma de Barcelona. Departament d'Enginyeria Química, Biològica i Ambiental)

Fecha:	2013
Resumen:	Volatile organic compound (VOC) and ammonia, that contribute to odor pollution, and methane and nitrous oxide, with an important greenhouse effect, are compounds present in gaseous emission from waste treatment installations, including composting plants. In this work, gaseous emissions from the composting of raw (RS) and anaerobically digested sludge (ADS) have been investigated and compared at pilot scale aiming to provide emission factors and to identify the different VOC families present. CH₄ and N₂O emissions were higher in ADS composting (0. 73 and 0. 55 kg Mg⁻¹ sludge, respectively) than in RS composting (0. 01 kg Mg⁻¹ sludge for both CH₄ and N₂O). NH₃ and VOCs emitted were higher during the RS composting process (19. 37 and 0. 21 kg Mg⁻¹ sludge, respectively) than in ADS composting (0. 16 and 0. 04 kg Mg⁻¹ sludge). Significant differences were found in the VOC compositions emitted in ADS and RS composting, being more diverse in RS than ADS composting.
Ayudas:	Ministerio de Ciencia e Innovación CTM2012-33663 Ministerio de Ciencia e Innovación BES-2010-038756
Derechos:	Tots els drets reservats.
Lengua:	Anglès
Documento:	Article ; recerca ; Versió sotmesa a revisió
Materia:	Composting ; Gaseous emissions ; Greenhouse gases ; Sludge ; VOC
Publicado en:	Bioresource technology, Vol. 147 (Nov. 2013) , p. 43-51, ISSN 0960-8524

Preprint
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