Apricot kernel shells pyrolysis controlled by non-isothermal simultaneous thermal analysis (STA)

Autor:	Bojan Janković, Milena Pijović, Hadi Waisi, Vladimir Jovanović, Vladimir Dodevski, Nebojša Manić, Dragoslava Stojiljković
Rok vydání:	2020
Předmět:	Fraser-Suzuki deconvolution Materials science Slow pyrolysis 02 engineering and technology Apricot kernel 7. Clean energy 01 natural sciences Isothermal process chemistry.chemical_compound Lignin Iterative isoconversional method Physical and Theoretical Chemistry Cellulose Thermal analysis Apricot wastes Modeling 021001 nanoscience & nanotechnology Condensed Matter Physics Decomposition 010406 physical chemistry 0104 chemical sciences chemistry Chemical engineering Yield (chemistry) 0210 nano-technology Pyrolysis
Zdroj:	Journal of Thermal Analysis and Calorimetry
ISSN:	1588-2926 1388-6150
Popis:	In order to clarify relationship between apricot kernel shell biomass slow pyrolysis mechanism and its main constituents (viz. hemicelluloses, cellulose and lignin), the reactivity effects of main constituents on pyrolysis characteristics were determined by the non-isothermal simultaneous thermal analysis. It was found that four-step (parallel) reaction model is suitable for studying the slow pyrolysis process, within the semi-global model which excludes the strong interaction between biomass constituents (pseudo-components). The application of the proposed model was allowed by the results obtained from KAS iterative isoconversional (model-free) approach. The valorization of the model was confirmed by the process optimization. The complex (cumulative) apricot kernel shell pyrolysis rate curves at different heating rates are successfully resolved into the individual decomposition rate curves (arising from thermal conversion of hemicelluloses, cellulose, and primary/secondary lignin fragments) by four-parameter Fraser–Suzuki function. Besides hemicelluloses and cellulose pyrolyses, the proposed model distinguishes primary and secondary lignin reactions, which enhance the gaseous products releasing (primarily CO and CO2 gases) and charification of the solid residue (increased the bio-char yield). © 2020, Akadémiai Kiadó, Budapest, Hungary.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a9ad39288a98eb894fddfcc132e814c8 https://doi.org/10.1007/s10973-020-09307-5 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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