000124074 001__ 124074
000124074 005__ 20241125101131.0
000124074 0247_ $$2doi$$a10.1016/j.fuel.2022.125970
000124074 0248_ $$2sideral$$a132635
000124074 037__ $$aART-2023-132635
000124074 041__ $$aeng
000124074 100__ $$0(orcid)0000-0002-9091-672X$$aAfailal, Zainab
000124074 245__ $$aThermochemical valorization of argan nutshells: Torrefaction and air–steam gasification
000124074 260__ $$c2023
000124074 5060_ $$aAccess copy available to the general public$$fUnrestricted
000124074 5203_ $$aThe upswing of argan’s oil for the cosmetic industry has increased the farming of this plant and originated an unexplored residue of complex treatment, its nutshells. This work deals with the characterization of this feedstock, its pretreatment via torrefaction and its gasification either with or without the pretreatment stage. Torrefaction was carried out in a continuous auger reactor at two temperatures, 220 and 250 °C. Hemicellulose was almost totally removed from argan nutshells after torrefaction. Compared to the raw argan shells, the torrefied solids showed an increased content of fixed carbon, a noticeable reduction in the O/C ratio and a significant increase in the HHV, the higher the torrefaction temperature. Chemical thermodynamic equilibrium calculations were implemented to the gasification stage to calculate the equivalence ratio for auto-thermal operation and to assess the effect of temperature and steam-to-biomass ratio on gas yield and composition. Air-steam gasification was also experimentally tested for the raw and torrefied materials at the operational conditions drawn from the simulation results. The torrefied material gasification yielded four times more char than the raw material, while tar production from the torrefied material was only reduced in the presence of steam (anyway starting from a low value: 0.7 g/m3STP for raw argan shells vs 0.3 g/m3STP for the torrefied material). Nor gas production, neither the H2/CO ratio nor the energy content in syngas were improved by gasifying the torrefied material, so torrefaction does not appear to be a profitable pretreatment stage for the gasification of argan nutshells from the point of view of syngas quality.
000124074 536__ $$9info:eu-repo/grantAgreement/ES/AEI/PID2020-114936RB-I00$$9info:eu-repo/grantAgreement/ES/DGA-FEDER/T22-20R$$9info:eu-repo/grantAgreement/ES/MICINN/RYC2020-030593-I
000124074 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
000124074 590__ $$a6.7$$b2023
000124074 592__ $$a1.451$$b2023
000124074 591__ $$aENGINEERING, CHEMICAL$$b23 / 170 = 0.135$$c2023$$dQ1$$eT1
000124074 591__ $$aENERGY & FUELS$$b46 / 171 = 0.269$$c2023$$dQ2$$eT1
000124074 593__ $$aEnergy Engineering and Power Technology$$c2023$$dQ1
000124074 593__ $$aOrganic Chemistry$$c2023$$dQ1
000124074 593__ $$aFuel Technology$$c2023$$dQ1
000124074 593__ $$aChemical Engineering (miscellaneous)$$c2023$$dQ1
000124074 594__ $$a12.8$$b2023
000124074 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000124074 700__ $$0(orcid)0000-0002-8704-9274$$aGil-Lalaguna, Noemí$$uUniversidad de Zaragoza
000124074 700__ $$0(orcid)0000-0001-7035-1955$$aFonts, Isabel$$uUniversidad de Zaragoza
000124074 700__ $$0(orcid)0000-0001-8960-2689$$aGonzalo, Alberto$$uUniversidad de Zaragoza
000124074 700__ $$0(orcid)0000-0002-5959-3168$$aArauzo, Jesús$$uUniversidad de Zaragoza
000124074 700__ $$0(orcid)0000-0002-9705-2207$$aSánchez, José Luis$$uUniversidad de Zaragoza
000124074 7102_ $$15005$$2555$$aUniversidad de Zaragoza$$bDpto. Ing.Quím.Tecnol.Med.Amb.$$cÁrea Ingeniería Química
000124074 7102_ $$15005$$2790$$aUniversidad de Zaragoza$$bDpto. Ing.Quím.Tecnol.Med.Amb.$$cÁrea Tecnologi. Medio Ambiente
000124074 773__ $$g332 (2023), 125970 [13 pp.]$$pFuel$$tFuel$$x0016-2361
000124074 8564_ $$s4822188$$uhttps://zaguan.unizar.es/record/124074/files/texto_completo.pdf$$yVersión publicada
000124074 8564_ $$s2423709$$uhttps://zaguan.unizar.es/record/124074/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000124074 909CO $$ooai:zaguan.unizar.es:124074$$particulos$$pdriver
000124074 951__ $$a2024-11-22-11:59:09
000124074 980__ $$aARTICLE