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Thermal devolatilization kinetics of Dry Distiller’s Grains with Solubles (DDGS)
- Source :
- Processes 9 (2021). doi:10.3390/pr9111907, info:cnr-pdr/source/autori:Branca C.; Di Blasi C./titolo:Thermal devolatilization kinetics of dry distiller's grains with solubles (Ddgs)/doi:10.3390%2Fpr9111907/rivista:Processes/anno:2021/pagina_da:/pagina_a:/intervallo_pagine:/volume:9, Processes, Volume 9, Issue 11, Processes, Vol 9, Iss 1907, p 1907 (2021)
- Publication Year :
- 2021
-
Abstract
- Dynamic thermogravimetric analysis is applied to investigate the thermal devolatilization of dry distiller’s grain with solubles (DDGS), the major by-product of bioethanol plants. Compared with lignocellulosic biomass, the DDGS devolatilization occurs over a much wider temperature range and with slower rates. This reveals complex dynamics attributable to a peculiar chemical composition comprising, in addition to lignocellulose, proteins, starch and other minor components. The evolution of lumped volatile product classes is well described by a five-step reaction mechanism. The numerical solution of the ordinary differential equations together with a minimization of the objective function leads to activation energies invariant with the heating rate. The estimated values of 89, 120, 158, 102 and 113 kJ/mol are, on average, higher than those obtained under oxidative environments but still lower than those typically estimated for wood.
- Subjects :
- Thermogravimetric analysis
Reaction mechanism
TGA
Chemistry
Starch
DDGS
Chemical technology
Process Chemistry and Technology
Lignocellulosic biomass
Bioengineering
TP1-1185
Atmospheric temperature range
pyrolysis
devolatilization
chemistry.chemical_compound
Chemical engineering
Biofuel
kinetics
Chemical Engineering (miscellaneous)
QD1-999
Pyrolysis
Chemical composition
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- Processes 9 (2021). doi:10.3390/pr9111907, info:cnr-pdr/source/autori:Branca C.; Di Blasi C./titolo:Thermal devolatilization kinetics of dry distiller's grains with solubles (Ddgs)/doi:10.3390%2Fpr9111907/rivista:Processes/anno:2021/pagina_da:/pagina_a:/intervallo_pagine:/volume:9, Processes, Volume 9, Issue 11, Processes, Vol 9, Iss 1907, p 1907 (2021)
- Accession number :
- edsair.doi.dedup.....c9bcff862d5a5e0da4633ec7475afb20