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Parametric study of corn cob biochar (CCBc) yield via microwave pyrolysis
Open accessAbstract
In the long-run, microwave pyrolysis can be a simpler and low energy-requiring alternative to conventional pyrolysis for the thermochemical conversion of biomass to useful products. However, there are still research gaps in its mechanism. Thus, this study investigated the various factors affecting the biochar yield using a half resolution (2 k-1) factorial design on the microwave pyrolysis of corn cob wastes. A viable biochar product was produced within minutes of the reaction; wherein, the statistical analysis confirmed the exposure time, microwave output power and their interaction as significant in the CCBc yield. The highest yield obtained was 52.87% when exposure time and output power were set to 5 min and 450W, respectively. A general decreasing effect on the yield was observed from increasing exposure time and output power. This was due to the rapid heating experienced by the corn cob wastes causing the hydrocarbons to react and transform into permanent gases at higher temperatures. To confirm the carbon content of the CCBc, elemental analysis showed an average of 67.11% C at low time-low power (LTLP) of 450 W for 5 min and 81.32% C for the samples operated at high time-high power (HTHP) of 700 W for 10 min.
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The behavior of the biochar yield based on the surface model reflects the behavior of the biochar yield in the parametric study of Lawas et al. (2019).
“In general, the behavior of the biochar yield based on the surface model reflects the behavior of the biochar yield in the parametric study of Lawas et al. (2019).”
From Optimization of process parameters of self-purging microwave pyrolysis of corn cob for biochar production (2021) · cites this paper as Lawas et al. (2019)
This is in contrast to the study by Lawas et al. (2019), which reported that both factors and their interaction to be significant.
“This is in contrast to the study by Lawas et al. (2019), which reported that both factors and their interaction to be significant.”
From Optimization of process parameters of self-purging microwave pyrolysis of corn cob for biochar production (2021) · cites this paper as Lawas et al. (2019)
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Cited by
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Quillope, J. C. C., Carpio, R. B., Gatdula, K. M., Detras, M. C. M., & Doliente, S. S. (2021) · Heliyon · doi:10.1016/j.heliyon.2021.e08417 · Cited by 33
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Metadata
- Authors
- Lawas, K. I., Doliente, S., Carpio, R., Migo, V., & Alfafara, C.
- Affiliations
- University of the Philippines Los Baños (PH)
- Corresponding author
- Carpio, Rowena
- Venue
- MATEC Web of Conferences
- Publisher
- EDP Sciences
- Published
- 2019
- Volume
- 268
- Pages
- 04005
- ISSN
- 2261-236X (ISSN-L)
- OpenAlex
- W2915975131
- Cited by
- 10
- References
- 0
- Citations by year
- 2025: 3 · 2024: 2 · 2022: 2 · 2021: 3
- FWCI
- 2.60
- Type
- conference paper
- Language
- en
- Open access
- diamond
- doi.org
- Licence
- Locations
- MATEC Web of Conferences (publishedVersion, cc-by)
- Springer Link (Chiba Institute of Technology) (submittedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Topics
- Physical Sciences › Energy › Fuel Technology › Thermochemical Biomass Conversion Processes
- Physical Sciences › Chemistry › Organic Chemistry › Microwave-Assisted Synthesis and Applications
- Physical Sciences › Materials Science › Materials Chemistry › Thermal and Kinetic Analysis
- Keywords
- corn cob, biochar yield, microwave pyrolysis, biomass conversion, exposure time, microwave power output, factorial design, carbon content, agricultural waste, thermochemical conversion
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