Hydrogen synthesis from biomass pyrolysis with in situ carbon dioxide capture using calcium oxide

Widyawati, M; Church, TL; Florin, NH; Harris, AT

Hydrogen synthesis from biomass pyrolysis with in situ carbon dioxide capture using calcium oxide

Widyawati, M Church, TL Florin, NH

Harris, AT

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Publication Type:: Journal Article
Citation:: International Journal of Hydrogen Energy, 2011, 36 (8), pp. 4800 - 4813
Issue Date:: 2011-04-01

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Field	Value	Language
dc.contributor.author	Widyawati, M	en_US
dc.contributor.author	Church, TL	en_US
dc.contributor.author	Florin, NH https://orcid.org/0000-0002-8436-4711	en_US
dc.contributor.author	Harris, AT	en_US
dc.date.issued	2011-04-01	en_US
dc.identifier.citation	International Journal of Hydrogen Energy, 2011, 36 (8), pp. 4800 - 4813	en_US
dc.identifier.issn	0360-3199	en_US
dc.identifier.uri	http://hdl.handle.net/10453/28698
dc.description.abstract	Hydrogen (H2) and other gases (CO2, CO, CH 4, H2O) produced during the pyrolysis of cellulose, xylan, lignin and pine (Pinus radiata), with and without added calcium oxide (CaO), were studied using thermogravimetry-mass spectrometry (TG-MS) and thermodynamic modeling. CaO improved the H2 yield from all feedstocks, and had the most significant effect on xylan. The weight loss of and gas evolution from the feedstocks were measured over the temperature range 150-950 °C in order to investigate the principle mechanism(s) of H2 formation. Without added CaO, little H2 was produced during primary pyrolysis; rather, most H2 was generated from tar-cracking, reforming, and char-decomposition reactions at higher temperatures. When CaO was added, significant H2 was produced during primary pyrolysis, as the water-gas shift reaction was driven toward H2 formation. CaO also increased the formation of H2 from reforming and char gasification reactions. Finally, CaO increased the extent of tar cracking and char decomposition, and lowered their onset temperatures. The production of H2 from pine over the course of pyrolysis could be modeled by summing the H2 evolutions from the separate biomass components in relevant proportions. © 2010, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.	en_US
dc.relation.ispartof	International Journal of Hydrogen Energy	en_US
dc.relation.isbasedon	10.1016/j.ijhydene.2010.11.103	en_US
dc.subject.classification	Energy	en_US
dc.title	Hydrogen synthesis from biomass pyrolysis with in situ carbon dioxide capture using calcium oxide	en_US
dc.type	Journal Article
utslib.citation.volume	8	en_US
utslib.citation.volume	36	en_US
utslib.for	030604 Electrochemistry	en_US
utslib.for	03 Chemical Sciences	en_US
utslib.for	09 Engineering	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/DVC (Research)
pubs.organisational-group	/University of Technology Sydney/DVC (Research)/Institute For Sustainable Futures
pubs.organisational-group	/University of Technology Sydney/Strength - ISF - Institute for Sustainable Futures
utslib.copyright.status	closed_access
pubs.issue	8	en_US
pubs.publication-status	Published	en_US
pubs.volume	36	en_US

Abstract:

Hydrogen (H2) and other gases (CO2, CO, CH 4, H2O) produced during the pyrolysis of cellulose, xylan, lignin and pine (Pinus radiata), with and without added calcium oxide (CaO), were studied using thermogravimetry-mass spectrometry (TG-MS) and thermodynamic modeling. CaO improved the H2 yield from all feedstocks, and had the most significant effect on xylan. The weight loss of and gas evolution from the feedstocks were measured over the temperature range 150-950 °C in order to investigate the principle mechanism(s) of H2 formation. Without added CaO, little H2 was produced during primary pyrolysis; rather, most H2 was generated from tar-cracking, reforming, and char-decomposition reactions at higher temperatures. When CaO was added, significant H2 was produced during primary pyrolysis, as the water-gas shift reaction was driven toward H2 formation. CaO also increased the formation of H2 from reforming and char gasification reactions. Finally, CaO increased the extent of tar cracking and char decomposition, and lowered their onset temperatures. The production of H2 from pine over the course of pyrolysis could be modeled by summing the H2 evolutions from the separate biomass components in relevant proportions. © 2010, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

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http://hdl.handle.net/10453/28698