000149069 001__ 149069 000149069 005__ 20250124153131.0 000149069 0247_ $$2doi$$a10.1016/j.biombioe.2024.107563 000149069 0248_ $$2sideral$$a142146 000149069 037__ $$aART-2025-142146 000149069 041__ $$aeng 000149069 100__ $$0(orcid)0000-0003-4631-6994$$aRoyo, Javier$$uUniversidad de Zaragoza 000149069 245__ $$aAsh partitioning in combustion of pelletized residual agricultural biomass 000149069 260__ $$c2025 000149069 5060_ $$aAccess copy available to the general public$$fUnrestricted 000149069 5203_ $$aThe use of residual agricultural biomass in the domestic sector has faced limitations for years due to the problems caused by the characteristics of its ash (quantity and composition). Quantifying and characterizing the fractions into which ash is divided during combustion process can help overcome this barrier. Based on ash samples from tests carried out in a laboratory fixed-grate reactor, a methodology for the analysis of ash partitioning during combustion has been presented and applied to four agropellets (one woody and three blended with herbaceous component –mixed agropellets-), both at the ash level and of the main chemical elements that constitute it. Ash has been separated in five fractions, analyzing the results considering the fuel composition and the operating conditions. In addition to detecting important differences in the partitioning among tested fuels, especially between mixed agropellets and the woody one, it should be noted that the analysis of elemental partitioning has shown that the order in the retained percentage of each element in the bottom ash fraction is Si > Ca + Mg > P > K + Na for all agropellets. An increment in the excess air has been corroborated to improve the behavior of the tested mixed agropellets both in sintering and in deposition. In case of the woody pellet, as its much lower sintering status supposes a dominance of fractions related with entrainment, it is preferable working with low excess air. The presented methodology allows estimating the importance and composition of each fraction, which affect the operation and condition the boiler design and is of great importance to achieve larger use of this kind of biomass. 000149069 536__ $$9info:eu-repo/grantAgreement/ES/MINECO-FEDER/ENE2015-68809-R 000149069 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc$$uhttp://creativecommons.org/licenses/by-nc/3.0/es/ 000149069 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion 000149069 700__ $$0(orcid)0000-0002-5037-7047$$aCanalís, Paula$$uUniversidad de Zaragoza 000149069 700__ $$0(orcid)0000-0003-4347-8023$$aQuintana, David 000149069 7102_ $$15004$$2545$$aUniversidad de Zaragoza$$bDpto. Ingeniería Mecánica$$cÁrea Ingeniería Mecánica 000149069 7102_ $$15004$$2590$$aUniversidad de Zaragoza$$bDpto. Ingeniería Mecánica$$cÁrea Máquinas y Motores Térmi. 000149069 773__ $$g193 (2025), 107563 [15 pp.]$$pBiomass bioenergy$$tBIOMASS & BIOENERGY$$x0961-9534 000149069 8564_ $$s6498555$$uhttps://zaguan.unizar.es/record/149069/files/texto_completo.pdf$$yVersión publicada 000149069 8564_ $$s2544068$$uhttps://zaguan.unizar.es/record/149069/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada 000149069 909CO $$ooai:zaguan.unizar.es:149069$$particulos$$pdriver 000149069 951__ $$a2025-01-24-14:50:01 000149069 980__ $$aARTICLE