Optimization of process parameters of self-purging microwave pyrolysis of corn cob for biochar production
File(s)
Published version
Author(s)
Quillope, John Christian C
Carpio, Rowena B
Gatdula, Kristel M
Detras, Monet Concepcion M
Doliente, Stephen S
Type
Journal Article
Abstract
Microwave pyrolysis offers rapid and low-cost technology to upgrade agro-forestry residues to high-value products. I-optimal experimental design was used to determine the optimal combination of microwave power and exposure time to maximize biochar yield from corn cob. A validation experiment at optimal conditions of 600 W and 6.9 min produced an average yield of 56.98% on a dry and ash-free basis, agrees with the predicted value (3.43% error) and confirms the adequacy of the model yield equation. Characterization of biochar product revealed an organized mesoporous structure with a carbon content of 62.68%, surface area of 3.05 m2/g, pore volume of 0.003 cm3/g, capacitance range of 27.14–53.99 μF/g, energy density range of 6.0 × 10−7 - 1.2 × 10−6 Wh/kg, and power density range of 9.4 × 10−4 – 2.49 × 10−3 W/kg. The biochar produced would require further process to be considered for various industrial applications.
Date Issued
2021-11-01
Date Acceptance
2021-11-12
Citation
Heliyon, 2021, 7 (11)
ISSN
2405-8440
Publisher
Elsevier
Journal / Book Title
Heliyon
Volume
7
Issue
11
Copyright Statement
© 2021 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
Identifier
https://www.ncbi.nlm.nih.gov/pubmed/34901490
PII: S2405-8440(21)02520-2
Subjects
ASSISTED PYROLYSIS
Biochar
BIOMASS
BIO-OIL
Corn cob
GASIFICATION
I-optimal design
Microwave pyrolysis
Multidisciplinary Sciences
Optimization
POROUS CARBON
Science & Technology
Science & Technology - Other Topics
Self-purging
TEMPERATURE
Publication Status
Published
Coverage Spatial
England
Article Number
e08417
Date Publish Online
2021-11-17