Biofiltration for ammonia removal from composting exhaust gases
Pagans i Miró, Estel·la (Escola Universitària Politècnica del Medi Ambient (Mollet del Vallès, Catalunya))
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)

Date:	2005
Abstract:	A study was conducted to investigate the utilization of mature compost as a biofilter media for the removal of ammonia from the exhaust gases of the composting process. Source-selected organic fraction of municipal solid wastes, digested wastewater sludge and animal by-products were composted in a pilot-scale reactor and the exhaust gas was treated in a biofilter. Due to the high ammonia adsorption and absorption capacity of the compost media, no delay or start-up phase was observed and high removal efficiencies were achieved from the beginning of the experiments. A global ammonia removal efficiency of 95. 9% was obtained in the biofilter for a loading rate range of 846-67,100 mg NH₃ m⁻³ biofilter h⁻¹. However, an important reduction of ammonia removal was observed when the waste gas contained high NH₃ concentration (more than 2000 mg NH₃ m⁻³), which corresponded with the case of animal by-products composting.
Grants:	Ministerio de Ciencia y Tecnología REN2003-00823
Rights:	Tots els drets reservats.
Language:	Anglès
Document:	Article ; recerca ; Versió sotmesa a revisió
Subject:	Ammonia removal ; Biofiltration ; Compost media ; Composting ; Organic solid wastes
Published in:	Biochemical engineering journal, Vol. 113, issues 2-3 (Oct. 2005) , p. 105-110, ISSN 1369-703X

DOI: 10.1016/j.cej.2005.03.004

Pre-print 25 p, 1.5 MB

The record appears in these collections:
Research literature > UAB research groups literature > Research Centres and Groups (research output) > Engineering > Composting Research Group (GICOM)
Articles > Research articles
Articles > Published articles