Oxidative torrefaction performance of microalga Nannochloropsis Oceanica towards an upgraded microalgal solid biofuel.

Zhang, C; Ho, S-H; Chen, W-H; Wang, R; Show, P-L; Ong, HC

Oxidative torrefaction performance of microalga Nannochloropsis Oceanica towards an upgraded microalgal solid biofuel.

Zhang, C Ho, S-H Chen, W-H Wang, R Show, P-L Ong, HC

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Publisher:: Elsevier
Publication Type:: Journal Article
Citation:: Journal of Biotechnology, 2021, 338, pp. 81-90
Issue Date:: 2021-09-10

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Field	Value	Language
dc.contributor.author	Zhang, C
dc.contributor.author	Ho, S-H
dc.contributor.author	Chen, W-H
dc.contributor.author	Wang, R
dc.contributor.author	Show, P-L
dc.contributor.author	Ong, HC
dc.date.accessioned	2022-05-16T06:16:38Z
dc.date.available	2021-07-13
dc.date.available	2022-05-16T06:16:38Z
dc.date.issued	2021-09-10
dc.identifier.citation	Journal of Biotechnology, 2021, 338, pp. 81-90
dc.identifier.issn	0168-1656
dc.identifier.issn	1873-4863
dc.identifier.uri	http://hdl.handle.net/10453/157424
dc.description.abstract	Microalgae are a promising feedstock for carbon-neutral biofuel production due to their superior cellular composition. Alternatively, oxidative torrefaction has been recognized as a potential thermochemical technique for microalgal solid biofuel upgrading. Herein, by using microalga N. oceanica as a feedstock, several characterizations are adopted for evaluating the potential of oxidative torrefaction towards microalgal solid biofuel production. The oxidatively torrefied microalgae can be upgraded as lignite. After in-depth analysis, significant change in the surface microstructure of oxidatively torrefied microalgae is largely changed (via wrinkle and fragmentation) The hydrophobicity, thermal decomposition, thermal stability, and aromatization of oxidatively torrefied microalgae can be largely enhanced as the oxidative torrefaction severity increase. With the increasing torrefaction temperature, the hydrophobicity of oxidative torrefied microalgae gradually improved. The decomposition of C-2/3/5, and -OCH3, the CO bonds of CH3CO-, and the aromatization occurs via oxidative torrefaction according to the NMR analysis. For XPS analysis, torrefaction operation significantly decreases the carbide carbon and enhances the graphitization. As a result, the thermal stability of oxidatively torrefied microalgae is improved. Conclusively, the information obtained in this study can provide insights into the evaluation of oxidative torrefaction performance and fuel properties of microalgal solid biofuel, which may help accelerate the advancement of oxidative torrefaction industrialization.
dc.format	Print-Electronic
dc.language	eng
dc.publisher	Elsevier
dc.relation.ispartof	Journal of Biotechnology
dc.relation.isbasedon	10.1016/j.jbiotec.2021.07.009
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	06 Biological Sciences, 09 Engineering, 10 Technology
dc.subject.classification	Biotechnology
dc.subject.mesh	Biofuels
dc.subject.mesh	Biomass
dc.subject.mesh	Microalgae
dc.subject.mesh	Oxidative Stress
dc.subject.mesh	Stramenopiles
dc.subject.mesh	Temperature
dc.subject.mesh	Biofuels
dc.subject.mesh	Biomass
dc.subject.mesh	Microalgae
dc.subject.mesh	Oxidative Stress
dc.subject.mesh	Stramenopiles
dc.subject.mesh	Temperature
dc.subject.mesh	Biomass
dc.subject.mesh	Temperature
dc.subject.mesh	Oxidative Stress
dc.subject.mesh	Biofuels
dc.subject.mesh	Stramenopiles
dc.subject.mesh	Microalgae
dc.title	Oxidative torrefaction performance of microalga Nannochloropsis Oceanica towards an upgraded microalgal solid biofuel.
dc.type	Journal Article
utslib.citation.volume	338
utslib.location.activity	Netherlands
utslib.for	06 Biological Sciences
utslib.for	09 Engineering
utslib.for	10 Technology
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Information, Systems and Modelling
utslib.copyright.status	closed_access	*
pubs.consider-herdc	false
dc.date.updated	2022-05-16T06:16:33Z
pubs.publication-status	Published
pubs.volume	338

Abstract:

Microalgae are a promising feedstock for carbon-neutral biofuel production due to their superior cellular composition. Alternatively, oxidative torrefaction has been recognized as a potential thermochemical technique for microalgal solid biofuel upgrading. Herein, by using microalga N. oceanica as a feedstock, several characterizations are adopted for evaluating the potential of oxidative torrefaction towards microalgal solid biofuel production. The oxidatively torrefied microalgae can be upgraded as lignite. After in-depth analysis, significant change in the surface microstructure of oxidatively torrefied microalgae is largely changed (via wrinkle and fragmentation) The hydrophobicity, thermal decomposition, thermal stability, and aromatization of oxidatively torrefied microalgae can be largely enhanced as the oxidative torrefaction severity increase. With the increasing torrefaction temperature, the hydrophobicity of oxidative torrefied microalgae gradually improved. The decomposition of C-2/3/5, and -OCH3, the CO bonds of CH3CO-, and the aromatization occurs via oxidative torrefaction according to the NMR analysis. For XPS analysis, torrefaction operation significantly decreases the carbide carbon and enhances the graphitization. As a result, the thermal stability of oxidatively torrefied microalgae is improved. Conclusively, the information obtained in this study can provide insights into the evaluation of oxidative torrefaction performance and fuel properties of microalgal solid biofuel, which may help accelerate the advancement of oxidative torrefaction industrialization.

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http://hdl.handle.net/10453/157424