Olive trimmings (OT) were used as feedstock for an in-depth experimental study on the reaction kinetics controlling hydrothermal carbonization (HTC). OT were hydrothermally carbonized for a residence time τ of up to 8 h at temperatures between 180 and 250 ◦ C to systematically investigate the chemical and energy properties changes of hydrochars during HTC. Additional experiments at 120 and 150 ◦ C at τ = 0 h were carried out to analyze the heat-up transient phase required to reach the HTC set-point temperature. Furthermore, an original HTC reaction kinetics model was developed. The HTC reaction pathway was described through a lumped model, in which biomass is converted into solid (distinguished between primary and secondary char), liquid, and gaseous products. The kinetics model, written in MATLAB TM , was used in best fitting routines with HTC experimental data obtained using OT and two other agro-wastes previously tested: grape marc and Opuntia Ficus Indica. The HTC kinetics model effectively predicts carbon distribution among HTC products versus time with the thermal transient phase included; it represents an effective tool for R&D in the HTC field. Importantly, both modeling and experimental data suggest that already during the heat-up phase, biomass greatly carbonizes, in particular at the highest temperature tested of 250 ◦ C.
Hydrothermal carbonization kinetics of lignocellulosic agro-wastes: Experimental data and modeling / Lucian, M.; Volpe, M.; Fiori, L.. - In: ENERGIES. - ISSN 1996-1073. - STAMPA. - 12:3(2019), p. 516.
|Titolo:||Hydrothermal carbonization kinetics of lignocellulosic agro-wastes: Experimental data and modeling|
|Autori:||Lucian, M.; Volpe, M.; Fiori, L.|
|Titolo del periodico:||ENERGIES|
|Anno di pubblicazione:||2019|
|Numero e parte del fascicolo:||3|
|Codice identificativo Scopus:||2-s2.0-85061863844|
|Codice identificativo ISI:||WOS:000460666200184|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.3390/en12030516|
|Citazione:||Hydrothermal carbonization kinetics of lignocellulosic agro-wastes: Experimental data and modeling / Lucian, M.; Volpe, M.; Fiori, L.. - In: ENERGIES. - ISSN 1996-1073. - STAMPA. - 12:3(2019), p. 516.|
|Appare nelle tipologie:||03.1 Articolo su rivista (Journal article)|