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Article

Capture and UV-Fluorescence Characterization of Primary Aerosols Ejected During the Fast Pyrolysis of Biomass in a Hot Plate Reactor

by
Mario A. Sánchez
1,*,
Estefanía Orrego-Restrepo
2,
Mariana Bustamante-Durango
1,
Juan C. Maya
2,
Farid Chejne
2,
Brennan Pecha
3 and
Adriana M. Quinchía-Figueroa
1
1
Escuela de Ingeniería y Ciencias Básicas, Universidad EIA, Envigado 055428, Colombia
2
Grupo de Investigación TAYEA, Departamento de Procesos y Energía, Facultad de Minas, Universidad Nacional de Colombia-Sede Medellín, Medellín 050034, Colombia
3
Renewable Resources and Enabling Sciences Center, National Renewable Energy Laboratory (NREL), Golden, CO 15013, USA
*
Author to whom correspondence should be addressed.
Reactions 2024, 5(4), 1013-1026; https://doi.org/10.3390/reactions5040053
Submission received: 30 August 2024 / Revised: 2 November 2024 / Accepted: 21 November 2024 / Published: 1 December 2024
(This article belongs to the Special Issue Waste Biorefinery Technologies for Accelerating Sustainable Energy Processes)
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Abstract

This study focuses on the collection and UV characterization of the bio-oil phase from primary aerosols ejected from the liquid intermediate phase during the fast pyrolysis of biomass in a hot plate reactor. The effects of the reactor pressure and aerosol-collecting surface temperature on the bio-oil yield and characteristics were evaluated. The study found that lower reactor pressures and a lower temperature of the collecting surface significantly enhanced the aerosol yield (up to 85%). UV-fluorescence was employed to assess the influence of these parameters on the light-to-heavy compound ratio (monomers vs. oligomers). The heavy fraction of bio-oil from the hot plate reactor was predominantly composed of dimers and trimers (340–370 nm), similar to pyrolytic lignin and the heavy fraction of the bio-oil, which also showed peaks in this range. In contrast, pyrolysis oils from auger and fluidized bed reactors displayed two peaks in the UV spectrum, with a maximum around 300 nm, indicating that they are mainly composed of light monomeric compounds. The UV characterization of the primary aerosols and the comparison with the UV spectra of the bio-oil and its fractions (light and heavy fraction and pyrolignin) revealed similar UV prints, highlighting the importance of aerosol ejection in the final composition of bio-oil.
Keywords: bio-oil; aerosols; pyrolysis; biomass; UV-fluorescence; hot plate reactor bio-oil; aerosols; pyrolysis; biomass; UV-fluorescence; hot plate reactor
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MDPI and ACS Style

Sánchez, M.A.; Orrego-Restrepo, E.; Bustamante-Durango, M.; Maya, J.C.; Chejne, F.; Pecha, B.; Quinchía-Figueroa, A.M. Capture and UV-Fluorescence Characterization of Primary Aerosols Ejected During the Fast Pyrolysis of Biomass in a Hot Plate Reactor. Reactions 2024, 5, 1013-1026. https://doi.org/10.3390/reactions5040053

AMA Style

Sánchez MA, Orrego-Restrepo E, Bustamante-Durango M, Maya JC, Chejne F, Pecha B, Quinchía-Figueroa AM. Capture and UV-Fluorescence Characterization of Primary Aerosols Ejected During the Fast Pyrolysis of Biomass in a Hot Plate Reactor. Reactions. 2024; 5(4):1013-1026. https://doi.org/10.3390/reactions5040053

Chicago/Turabian Style

Sánchez, Mario A., Estefanía Orrego-Restrepo, Mariana Bustamante-Durango, Juan C. Maya, Farid Chejne, Brennan Pecha, and Adriana M. Quinchía-Figueroa. 2024. "Capture and UV-Fluorescence Characterization of Primary Aerosols Ejected During the Fast Pyrolysis of Biomass in a Hot Plate Reactor" Reactions 5, no. 4: 1013-1026. https://doi.org/10.3390/reactions5040053

APA Style

Sánchez, M. A., Orrego-Restrepo, E., Bustamante-Durango, M., Maya, J. C., Chejne, F., Pecha, B., & Quinchía-Figueroa, A. M. (2024). Capture and UV-Fluorescence Characterization of Primary Aerosols Ejected During the Fast Pyrolysis of Biomass in a Hot Plate Reactor. Reactions, 5(4), 1013-1026. https://doi.org/10.3390/reactions5040053

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