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
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