TY - JOUR
T1 - Optimization of process parameters of self-purging microwave pyrolysis of corn cob for biochar production
AU - Quillope, John Christian C.
AU - Carpio, Rowena B.
AU - Gatdula, Kristel M.
AU - Detras, Monet Concepcion M.
AU - Doliente, Stephen S.
PY - 2021/11/30
Y1 - 2021/11/30
N2 - 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.
AB - 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.
KW - Biochar
KW - Corn cob
KW - I-optimal design
KW - Microwave pyrolysis
KW - Optimization
KW - Self-purging
UR - http://www.scopus.com/inward/record.url?scp=85120325405&partnerID=8YFLogxK
U2 - 10.1016/j.heliyon.2021.e08417
DO - 10.1016/j.heliyon.2021.e08417
M3 - Article
AN - SCOPUS:85120325405
SN - 2405-8440
VL - 7
JO - Heliyon
JF - Heliyon
IS - 11
M1 - e08417
ER -