Effect of inoculation dosing on the composting of source-selected organic fraction of municipal solid wastes
Barrena Gómez, Raquel (Universitat Autònoma de Barcelona. Departament d'Enginyeria Química, Biològica i Ambiental)
Pagans i Miró, Estel·la (Escola Universitària Politècnica del Medi Ambient (Mollet del Vallès, Catalunya))
Faltys, Gary (Escola Universitària Politècnica del Medi Ambient (Mollet del Vallès, Catalunya))
Sanchez, Antoni (Universitat Autònoma de Barcelona. Departament d'Enginyeria Química, Biològica i Ambiental)

Date:	2006
Abstract:	The effects of a commercial inoculum (MicroGest 10X, Brookside Agra L. C. ) on the field-scale composting of the source-selected organic fraction of municipal solid wastes (OFMSW) have been studied by following routine parameters of the composting process (temperature, oxygen content and moisture) and biologically-related tests such as the respirometric index and the maturity grade. The inoculum was added to composting piles of OFMSW at different levels: control (no added inoculum), treatment A (10⁵ CFU g⁻¹ of OFMSW), treatment B (10⁶ CFU g⁻¹ of OFMSW) and treatment C (10⁷ CFU g⁻¹ of OFMSW). The inoculum selected produced a significant acceleration of the composting process with high levels of biological activity in the thermophilic phase. In terms of the acceleration of composting and economy the optimal treatment was B, which produced a reduction of approximately half of the total composting time. Treatment C did not improve significantly the results obtained with treatment B, whereas treatment A has little effect on the composting of OFMSW when compared with the control experiment. Respirometric index (determined at 55 °C) and maturity grade appeared to be the most reliable tests to follow the biological activity of the composting of OFMSW. On the other hand, routine parameters such as temperature, oxygen content and moisture showed no significant differences among the different inoculation levels tested in the composting process.
Grants:	Ministerio de Ciencia y Tecnología REN2003-00823
Rights:	Aquest material està protegit per drets d'autor i/o drets afins. Podeu utilitzar aquest material en funció del que permet la legislació de drets d'autor i drets afins d'aplicació al vostre cas. Per a d'altres usos heu d'obtenir permís del(s) titular(s) de drets.
Language:	Anglès
Document:	Article ; recerca ; Versió sotmesa a revisió
Subject:	Biological activity ; Composting ; Stability ; Inoculation ; Maturity ; Municipal solid wastes
Published in:	Journal of chemical technology and biotechnology, Vol. 81, issue 3 (March 2006) , p. 420-425, ISSN 1097-4660

DOI: 10.1002/jctb.1418

Pre-print 24 p, 964.8 KB

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Research literature > UAB research groups literature > Research Centres and Groups (research output) > Engineering > Composting Research Group (GICOM)
Articles > Research articles
Articles > Published articles