Filling in sewage sludge biodrying gaps : Greenhouse gases, volatile organic compounds and odour emissions
González Alé, Daniel (Universitat Autònoma de Barcelona. Departament d'Enginyeria Química, Biològica i Ambiental)
Guerra-Gorostegi, Nagore (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)
Ponsa Salas, Sergio (Universitat de Vic - Universitat Central de Catalunya. Centre Tecnològic BETA)
Sánchez, Antoni (Universitat Autònoma de Barcelona. Departament d'Enginyeria Química, Biològica i Ambiental)

Date:	2019
Abstract:	In the present work, a complete study of the sewage sludge (SS) biodrying technology was conducted at bench-scale, aiming at assessing its performance and providing a valuable insight into the different gaseous emission patterns found for greenhouse gases (GHG) and odorant pollutants. As process key parameters, temperature, specific airflow, dynamic respiration index, final moisture content and Lower Calorific Value (LCV) were evaluated. At the end of the biodrying, a product with a 35. 9% moisture content and a LCV of 7. 1 MJ·kg-1product was obtained. GHGs emission factor was 28. 22 kgCO2eq per Mg of initial mass of dry matter in the SS (DM0-SS). During the biodrying process, maximum odour concentration measured was 3043 ou·m-3 and the estimated odour emission factor of the biological treatment was 3. 10E + 07 ou per Mg DM0-SS. Finally, VOCs were completely identified and quantified. The most abundant VOCs found in the biodrying gaseous emissions were terpenes, sulphur-compounds and ketones.
Grants:	European Commission 690323
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:	Biodrying ; Gaseous emission ; Greenhouse gases (GHG) ; Odour ; Sewage sludge ; SDG 7 - Affordable and Clean Energy
Published in:	Bioresource Technology, Vol. 291 (November 2019) , art. 121857, ISSN 1873-2976

DOI: 10.1016/j.biortech.2019.121857
PMID: 31377511

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