On the effects of CO2 atmosphere in the pyrolysis of Salicornia bigelovii
Type
ArticleAuthors
Aljaziri, Jinan
Gautam, Ribhu

Alturkistani, Sultan H.

Fiene, Gabriele
Tester, Mark A.

Sarathy, Mani

KAUST Department
Chemical Engineering ProgramPhysical Science and Engineering (PSE) Division
Clean Combustion Research Center
Biological and Environmental Science and Engineering (BESE) Division
Plant Science
Center for Desert Agriculture
Date
2022-01Embargo End Date
2023-01-01Submitted Date
2021-10-29Permanent link to this record
http://hdl.handle.net/10754/674931
Metadata
Show full item recordAbstract
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.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.2022.100950Sponsors
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.Publisher
Elsevier BVJournal
Bioresource Technology ReportsAdditional Links
https://linkinghub.elsevier.com/retrieve/pii/S2589014X2200007Xae974a485f413a2113503eed53cd6c53
10.1016/j.biteb.2022.100950