Thermal Devolatilization Kinetics of Dry Distiller’s Grains with Solubles (DDGS)

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 slo...

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Autores principales:	Carmen Branca, Colomba Di Blasi
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	DDGS pyrolysis devolatilization TGA kinetics Chemical technology TP1-1185 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/b852a6b5fe7047f6b1d274f31bf71965
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id	oai:doaj.org-article:b852a6b5fe7047f6b1d274f31bf71965
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spelling	oai:doaj.org-article:b852a6b5fe7047f6b1d274f31bf719652021-11-25T18:50:19ZThermal Devolatilization Kinetics of Dry Distiller’s Grains with Solubles (DDGS)10.3390/pr91119072227-9717https://doaj.org/article/b852a6b5fe7047f6b1d274f31bf719652021-10-01T00:00:00Zhttps://www.mdpi.com/2227-9717/9/11/1907https://doaj.org/toc/2227-9717Dynamic 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.Carmen BrancaColomba Di BlasiMDPI AGarticleDDGSpyrolysisdevolatilizationTGAkineticsChemical technologyTP1-1185ChemistryQD1-999ENProcesses, Vol 9, Iss 1907, p 1907 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	DDGS pyrolysis devolatilization TGA kinetics Chemical technology TP1-1185 Chemistry QD1-999
spellingShingle	DDGS pyrolysis devolatilization TGA kinetics Chemical technology TP1-1185 Chemistry QD1-999 Carmen Branca Colomba Di Blasi Thermal Devolatilization Kinetics of Dry Distiller’s Grains with Solubles (DDGS)
description	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.
format	article
author	Carmen Branca Colomba Di Blasi
author_facet	Carmen Branca Colomba Di Blasi
author_sort	Carmen Branca
title	Thermal Devolatilization Kinetics of Dry Distiller’s Grains with Solubles (DDGS)
title_short	Thermal Devolatilization Kinetics of Dry Distiller’s Grains with Solubles (DDGS)
title_full	Thermal Devolatilization Kinetics of Dry Distiller’s Grains with Solubles (DDGS)
title_fullStr	Thermal Devolatilization Kinetics of Dry Distiller’s Grains with Solubles (DDGS)
title_full_unstemmed	Thermal Devolatilization Kinetics of Dry Distiller’s Grains with Solubles (DDGS)
title_sort	thermal devolatilization kinetics of dry distiller’s grains with solubles (ddgs)
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/b852a6b5fe7047f6b1d274f31bf71965
work_keys_str_mv	AT carmenbranca thermaldevolatilizationkineticsofdrydistillersgrainswithsolublesddgs AT colombadiblasi thermaldevolatilizationkineticsofdrydistillersgrainswithsolublesddgs
_version_	1718410671267250176

Thermal Devolatilization Kinetics of Dry Distiller’s Grains with Solubles (DDGS)

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