On the effects of CO2 atmosphere in the pyrolysis of Salicornia bigelovii

Aljaziri, Jinan; Gautam, Ribhu; Alturkistani, Sultan H.; Fiene, Gabriele; Tester, Mark A.; Sarathy, Mani

dc.contributor.author	Aljaziri, Jinan
dc.contributor.author	Gautam, Ribhu
dc.contributor.author	Alturkistani, Sultan H.
dc.contributor.author	Fiene, Gabriele
dc.contributor.author	Tester, Mark A.
dc.contributor.author	Sarathy, Mani
dc.date.accessioned	2022-01-12T12:53:20Z
dc.date.available	2022-01-12T12:53:20Z
dc.date.issued	2022-01
dc.date.submitted	2021-10-29
dc.identifier.citation	Aljaziri, J., Gautam, R., Alturkistani, S., Fiene, G. M., Tester, M., & Sarathy, S. M. (2022). On the effects of CO2 atmosphere in the pyrolysis of Salicornia bigelovii. Bioresource Technology Reports, 100950. doi:10.1016/j.biteb.2022.100950
dc.identifier.issn	2589-014X
dc.identifier.doi	10.1016/j.biteb.2022.100950
dc.identifier.uri	http://hdl.handle.net/10754/674931
dc.description.abstract	This study focuses on understanding the effects of a CO$_2$ atmosphere on the pyrolysis of $\textit{Salicornia bigelovii}$ by performing a detailed kinetic analysis and investigating the pyrolysis products. In comparison to N$_2$ pyrolysis, CO$_2$ pyrolysis increased the amounts of acids, phenols, amines/amides and N-aromatics in the bio-oil. Biochar showed a 6.5% increase in carbon and a 5.8% decrease in oxygen due to the presence of CO$_2$ in the pyrolysis atmosphere. CO$_2$ also inhibited the volatilization of certain functional groups, such as phenols, tertiary alcohols and aromatics from the biochar, and the surface area of the biochar was 12 times larger than pyrolysis in N$_2$ atmosphere. Pyrolysis in CO$_2$ led to an increase in the average apparent activation energy from 146.5 kJ mol$^{−1}$ in N$_2$ to 163.4 kJ mol$^{−1}$. The kinetic equation was found to conform to a three dimensional diffusion mechanism. Finally, the pre-exponential factor was determined for each reaction.
dc.description.sponsorship	Dinara Utarbayeva and Hongwei Ren from KAUST are acknowledged for their help in growing plants and threshing the seeds. This work was sponsored by King Abdullah University of Science and Technology (KAUST). The authors thank the Clean Combustion Research Center (CCRC) at KAUST for funding and allowing access to their experimental facilities. The authors would also like to thank the Core Labs at KAUST for access to their instruments.
dc.publisher	Elsevier BV
dc.relation.url	https://linkinghub.elsevier.com/retrieve/pii/S2589014X2200007X
dc.rights	NOTICE: this is the author’s version of a work that was accepted for publication in Bioresource Technology Reports. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Bioresource Technology Reports, [, , (2022-01)] DOI: 10.1016/j.biteb.2022.100950 . © 2022. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.title	On the effects of CO2 atmosphere in the pyrolysis of Salicornia bigelovii
dc.type	Article
dc.contributor.department	Chemical Engineering Program
dc.contributor.department	Physical Science and Engineering (PSE) Division
dc.contributor.department	Clean Combustion Research Center
dc.contributor.department	Biological and Environmental Science and Engineering (BESE) Division
dc.contributor.department	Plant Science
dc.contributor.department	Center for Desert Agriculture
dc.identifier.journal	Bioresource Technology Reports
dc.rights.embargodate	2023-01-01
dc.eprint.version	Post-print
dc.identifier.pages	100950
kaust.person	Aljaziri, Jinan
kaust.person	Gautam, Ribhu
kaust.person	Alturkistani, Sultan
kaust.person	Fiene, Gabriele
kaust.person	Tester, Mark A.
kaust.person	Sarathy, Mani
kaust.acknowledged.supportUnit	Clean Combustion Research Center (CCRC)
kaust.acknowledged.supportUnit	Core Labs