Biomass fuel production from cellulosic sludge through biodrying : Aeration strategies, quality of end-products, gaseous emissions and techno-economic assessment
Guerra-Gorostegi, N. (Universitat de Vic - Universitat Central de Catalunya. Centre Tecnològic BETA)
González Alé, Daniel (Universitat Autònoma de Barcelona. Departament d'Enginyeria Química, Biològica i Ambiental)
Puyuelo Sánchez, Belén (Universitat de Vic - Universitat Central de Catalunya. Centre Tecnològic BETA)
Ovejero, J. (Universitat de Vic - Universitat Central de Catalunya. Centre Tecnològic BETA)
Colón Jordà, Joan (Universitat de Vic - Universitat Central de Catalunya. Centre Tecnològic BETA)
Gabriel, David (Universitat Autònoma de Barcelona. Departament d'Enginyeria Química, Biològica i Ambiental)
Sanchez, Antoni (Universitat Autònoma de Barcelona. Departament d'Enginyeria Química, Biològica i Ambiental)
Ponsá, S. (Universitat de Vic - Universitat Central de Catalunya. Centre Tecnològic BETA)

Date:	2021
Abstract:	This study assesses the technological, environmental and economic feasibility of biodrying to valorise cellulosic sludge as a renewable energy source. Specifically, three different aeration strategies were compared in terms of biodrying performance, energetic consumption, gaseous emissions, quality of end-products and techno-economic analysis. These strategies were based on different combinations of convective drying with biogenic heat produced. Two innovative biodrying performance indicators (Energetic Biodrying Index and Biodrying Performance Index) were proposed to better assess the initial and operational conditions that favour the maximum energy process efficiency and the highest end-product quality. The end-products obtained consistently presented moisture contents below 40% and lower heating values above 9. 4 MJ·kg-1. However, the best values achieved were 32. 6% and 10. 4 MJ·kg-1 for moisture content and lower heating value, respectively. Low N2O and CH4 emissions confirmed the effective aeration of all three strategies carried out, while NH4 and tVOCs were related either to temperature or biological phenomena. A techno-economic analysis proved the economic viability and attractiveness of the biodrying technology for cellulosic sludge in all the strategies applied.
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades.
Language:	Anglès
Document:	Article ; recerca ; Versió acceptada per publicar
Subject:	Aeration strategies ; Biodrying ; Cellulosic sludge ; Gaseous emissions ; Techno-economic analysis
Published in:	Waste management (Elmsford), Vol. 126 (May 2021) , p. 487-496, ISSN 1879-2456

DOI: 10.1016/j.wasman.2021.03.036
PMID: 33838388

Post-print 47 p, 1.2 MB

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