TY - JOUR
T1 - Kinetic Study of Copyrolysis of the Green Microalgae Botryococcus braunii and Victorian Brown Coal by Thermogravimetric Analysis
AU - Subagyono, R. R.Dirgarini Julia Nurlianti
AU - Masdalifa, Wardina
AU - Aminah, Siti
AU - Nugroho, Rudy Agung
AU - Mollah, Mamun
AU - Londong Allo, Veliyana
AU - Gunawan, Rahmat
N1 - Funding Information:
We would like to acknowledge the Ministry of Research, Technology and Higher Education of the Republic of Indonesia for financial support in the project through the World Class Research Program (Contract number: 585/UN17.L1/PG/2021). We would like to thank Prof. Alan L. Chaffee from Monash University, Australia, for providing VBC samples and assistance with TGA analyses. We thank Rudianto, Stephanie Layuk and Widha Prahastika for their assistance in preparing the algal sample and characterization of Botryococcus braunii.
Publisher Copyright:
©
PY - 2021/11/30
Y1 - 2021/11/30
N2 - The copyrolysis of the green microalgae Botryococcus braunii and Victorian brown coal was studied by thermogravimetric analysis using the Kissinger-Akahira-Sunose (KAS), Flynn-Wall-Ozawa (FWO), and Friedman methods. This research aims to study the synergistic effect of mixing B. braunii and Victorian brown coal in pyrolysis reactions on the kinetic parameter using thermogravimetric analysis. Copyrolysis was carried out at four heating rates, 10, 15, 20, and 25 °C/min. The copyrolysis reaction of B. braunii and Victorian brown coal occurred from 155.79 to 545.27 °C; this temperature range was lower than that for the pyrolysis of only B. braunii under the same conditions. However, mixing the two samples increased the thermal decomposition temperature for each conversion value (α), as well as the average activation energy, due to the presence of compounds that require high temperatures to undergo pyrolysis in the Victorian brown coal. The average activation energies of the copyrolysis reaction of B. braunii and Victorian brown coal determined using the KAS, FWO, and Friedman methods were 195.20 ± 17.40, 195.60 ± 17.70, and 225.93 ± 32.39 kJ/mol, respectively.
AB - The copyrolysis of the green microalgae Botryococcus braunii and Victorian brown coal was studied by thermogravimetric analysis using the Kissinger-Akahira-Sunose (KAS), Flynn-Wall-Ozawa (FWO), and Friedman methods. This research aims to study the synergistic effect of mixing B. braunii and Victorian brown coal in pyrolysis reactions on the kinetic parameter using thermogravimetric analysis. Copyrolysis was carried out at four heating rates, 10, 15, 20, and 25 °C/min. The copyrolysis reaction of B. braunii and Victorian brown coal occurred from 155.79 to 545.27 °C; this temperature range was lower than that for the pyrolysis of only B. braunii under the same conditions. However, mixing the two samples increased the thermal decomposition temperature for each conversion value (α), as well as the average activation energy, due to the presence of compounds that require high temperatures to undergo pyrolysis in the Victorian brown coal. The average activation energies of the copyrolysis reaction of B. braunii and Victorian brown coal determined using the KAS, FWO, and Friedman methods were 195.20 ± 17.40, 195.60 ± 17.70, and 225.93 ± 32.39 kJ/mol, respectively.
UR - http://www.scopus.com/inward/record.url?scp=85120752588&partnerID=8YFLogxK
U2 - 10.1021/acsomega.1c04818
DO - 10.1021/acsomega.1c04818
M3 - Article
AN - SCOPUS:85120752588
SN - 2470-1343
VL - 6
SP - 32032
EP - 32042
JO - ACS Omega
JF - ACS Omega
IS - 47
ER -