Comparative studies of the pyrolytic and kinetic characteristics of maize straw and the seaweed Ulva pertusa.

Seaweed has attracted considerable attention as a potential biofuel feedstock. The pyrolytic and kinetic characteristics of maize straw and the seaweed Ulva pertusa were studied and compared using heating rates of 10, 30 and 50°C min(-1) under an inert atmosphere. The activation energy, and pre-expo...

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Autores principales:	Naihao Ye, Demao Li, Limei Chen, Xiaowen Zhang, Dong Xu
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2010
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/041cee6f52224dda80b67ecf711bab56
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spelling	oai:doaj.org-article:041cee6f52224dda80b67ecf711bab562021-11-18T06:35:18ZComparative studies of the pyrolytic and kinetic characteristics of maize straw and the seaweed Ulva pertusa.1932-620310.1371/journal.pone.0012641https://doaj.org/article/041cee6f52224dda80b67ecf711bab562010-09-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/20844751/?tool=EBIhttps://doaj.org/toc/1932-6203Seaweed has attracted considerable attention as a potential biofuel feedstock. The pyrolytic and kinetic characteristics of maize straw and the seaweed Ulva pertusa were studied and compared using heating rates of 10, 30 and 50°C min(-1) under an inert atmosphere. The activation energy, and pre-exponential factors were calculated by the Flynn-Wall-Ozawa (FWO), Kissinger-Akahira-Sunose (KAS) and Popescu methods. The kinetic mechanism was deduced by the Popescu method. The results indicate that there are three stages to the pyrolysis; dehydration, primary devolatilization and residual decomposition. There were significant differences in average activation energy, thermal stability, final residuals and reaction rates between the two materials. The primary devolatilization stage of U. pertusa can be described by the Avramic-Erofeev equation (n=3), whereas that of maize straw can be described by the Mampel Power Law (n=2). The average activation energy of maize straw and U. pertusa were 153.0 and 148.7 KJ mol(-1), respectively. The pyrolysis process of U.pertusa would be easier than maize straw. And co-firing of the two biomass may be require less external heat input and improve process stability. There were minor kinetic compensation effects between the pre-exponential factors and the activation energy.Naihao YeDemao LiLimei ChenXiaowen ZhangDong XuPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 5, Iss 9 (2010)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Naihao Ye Demao Li Limei Chen Xiaowen Zhang Dong Xu Comparative studies of the pyrolytic and kinetic characteristics of maize straw and the seaweed Ulva pertusa.
description	Seaweed has attracted considerable attention as a potential biofuel feedstock. The pyrolytic and kinetic characteristics of maize straw and the seaweed Ulva pertusa were studied and compared using heating rates of 10, 30 and 50°C min(-1) under an inert atmosphere. The activation energy, and pre-exponential factors were calculated by the Flynn-Wall-Ozawa (FWO), Kissinger-Akahira-Sunose (KAS) and Popescu methods. The kinetic mechanism was deduced by the Popescu method. The results indicate that there are three stages to the pyrolysis; dehydration, primary devolatilization and residual decomposition. There were significant differences in average activation energy, thermal stability, final residuals and reaction rates between the two materials. The primary devolatilization stage of U. pertusa can be described by the Avramic-Erofeev equation (n=3), whereas that of maize straw can be described by the Mampel Power Law (n=2). The average activation energy of maize straw and U. pertusa were 153.0 and 148.7 KJ mol(-1), respectively. The pyrolysis process of U.pertusa would be easier than maize straw. And co-firing of the two biomass may be require less external heat input and improve process stability. There were minor kinetic compensation effects between the pre-exponential factors and the activation energy.
format	article
author	Naihao Ye Demao Li Limei Chen Xiaowen Zhang Dong Xu
author_facet	Naihao Ye Demao Li Limei Chen Xiaowen Zhang Dong Xu
author_sort	Naihao Ye
title	Comparative studies of the pyrolytic and kinetic characteristics of maize straw and the seaweed Ulva pertusa.
title_short	Comparative studies of the pyrolytic and kinetic characteristics of maize straw and the seaweed Ulva pertusa.
title_full	Comparative studies of the pyrolytic and kinetic characteristics of maize straw and the seaweed Ulva pertusa.
title_fullStr	Comparative studies of the pyrolytic and kinetic characteristics of maize straw and the seaweed Ulva pertusa.
title_full_unstemmed	Comparative studies of the pyrolytic and kinetic characteristics of maize straw and the seaweed Ulva pertusa.
title_sort	comparative studies of the pyrolytic and kinetic characteristics of maize straw and the seaweed ulva pertusa.
publisher	Public Library of Science (PLoS)
publishDate	2010
url	https://doaj.org/article/041cee6f52224dda80b67ecf711bab56
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Comparative studies of the pyrolytic and kinetic characteristics of maize straw and the seaweed Ulva pertusa.

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