150384 20251017144637.0 sideral 61719 ART-2009-61719 eng Aznar, M. Universidad de Zaragoza Experimental Study Examining the Evolution of Nitrogen Compounds during the Gasification of Dried Sewage Sludge 2009 Access copy available to the general public Unrestricted Gasification of dried sewage sludge, which contains a high percentage of nitrogen, was experimentally studied to determine the effects of some operational parameters, such as freeboard temperature and equivalence ratio, on the partitioning of the fuel nitrogen among nitrogenous species. Experiments were performed using a bench-scale fluidized-bed gasifier and according to a well-specified procedure implemented to recover and quantify the nitrogen compounds. A mixture of argon and oxygen in similar proportions to air was used as a gasification agent in order to correctly quantify the N2 produced in the gasification process in an experimental way. Important findings of this research include the following: applying the analytical procedure developed in this work, a reasonably good inventory of nitrogen in the gasification products was obtained (mass balance closures near to 100%); most of the nitrogen goes to form gaseous products, N2 being the main gaseous nitrogen-containing product obtained; concentrations of N2, NH3, and N-tar in the producer gas strongly depend on the freeboard temperature, an increase of which causes an important decrease of both NH3 and N-tar contents and a substantial increase of the N2 amount. info:eu-repo/semantics/openAccess All rights reserved http://www.europeana.eu/rights/rr-f/ 2.319 2009 ENGINEERING, CHEMICAL 21 / 125 = 0.168 2009 Q1 T1 ENERGY & FUELS 21 / 71 = 0.296 2009 Q2 T1 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion San Anselmo, M. Manya, J. J. Universidad de Zaragoza (orcid)0000-0002-0118-3254 Murillo, M. B. Universidad de Zaragoza (orcid)0000-0002-3771-8994 5005 555 Universidad de Zaragoza Dpto. Ing.Quím.Tecnol.Med.Amb. Área Ingeniería Química 5005 X Universidad de Zaragoza Dpto. Ing.Quím.Tecnol.Med.Amb. Proy. investigación HKA 5005 790 Universidad de Zaragoza Dpto. Ing.Quím.Tecnol.Med.Amb. Área Tecnologi. Medio Ambiente 23, 6 (2009), 3236-3245 Energy fuels Energy and Fuels 0887-0624 372513 http://zaguan.unizar.es/record/150384/files/texto_completo.pdf Postprint 575404 http://zaguan.unizar.es/record/150384/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:150384 articulos driver 2025-10-17-14:29:48 ARTICLE