Thermogravimetric Analysis on Combustion Behavior of Marine Microalgae Spirulina Platensis Induced by MgCO3 and Al2O3 Additives
The impact of MgCO3 and Al2O3 additives on the thermal behavior of Spirulina platensis (SP) biomass during combustion in a thermal analyzer was evaluated to understand their catalytic effect in the decomposition process. The samples were pure SP and a mixture of SP and additives at mass fraction...
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| Format: | Article |
| Language: | English |
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Universitas Indonesia
2019-11-01
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| Series: | International Journal of Technology |
| Subjects: | |
| Online Access: | http://ijtech.eng.ui.ac.id/article/view/3611 |
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| author | Sukarni Sukarni Sumarli Sumarli Imam Muda Nauri Ardianto Prasetiyo Poppy Puspitasari |
| author_facet | Sukarni Sukarni Sumarli Sumarli Imam Muda Nauri Ardianto Prasetiyo Poppy Puspitasari |
| author_sort | Sukarni Sukarni |
| collection | DOAJ |
| description | The impact of MgCO3 and Al2O3
additives on the thermal behavior of Spirulina platensis (SP) biomass
during combustion in a thermal analyzer was evaluated to understand their
catalytic effect in the decomposition process. The samples were pure SP and a
mixture of SP and additives at mass fractions of 3, 6, and 9 (wt,%). Each
sample of around 8.5 mg was mounted in a thermobalance and subjected to a
furnace on a heating program of 10oC/min. The 100 ml/min air
atmosphere was kept continuously flowing during the combustion process from
30–1200oC. The thermal behavior of the sample was then characterized
from the thermogravimetric (TG) and derivative thermogravimetric (DTG) curves,
those were recorded by a computer during the experiment. The Horowitz–Metzger
method was used to evaluate the impact of additives on the kinetic parameters
of the samples. The results indicated that the presence of additives shifted
the main decomposition stage toward a lesser temperature. The rate of mass loss
(ML) in the main decomposition zone decreased in the 1st peak and
increased in the 2nd, in accordance with the increase in the
fraction of additives. This indicates that additives play different roles
during the decomposition process. The mass mean activation energy (Em)
increased at the additive fraction of 3% for both MgCO3 and Al2O3,
as well as at 6% MgCO3 compared to combustion with no additives.
Conversely, the presence of greater additives promoted a shift in Em
toward smaller values. These results confirm that both additives significantly
influenced the thermal behavior and kinetics of the SP combustion. |
| first_indexed | 2024-04-11T03:06:50Z |
| format | Article |
| id | doaj.art-07937c6d50f44cd29abb186d716d0cd7 |
| institution | Directory Open Access Journal |
| issn | 2086-9614 2087-2100 |
| language | English |
| last_indexed | 2024-04-11T03:06:50Z |
| publishDate | 2019-11-01 |
| publisher | Universitas Indonesia |
| record_format | Article |
| series | International Journal of Technology |
| spelling | doaj.art-07937c6d50f44cd29abb186d716d0cd72023-01-02T12:52:56ZengUniversitas IndonesiaInternational Journal of Technology2086-96142087-21002019-11-011061174118310.14716/ijtech.v10i6.36113611Thermogravimetric Analysis on Combustion Behavior of Marine Microalgae Spirulina Platensis Induced by MgCO3 and Al2O3 AdditivesSukarni Sukarni0Sumarli Sumarli1Imam Muda Nauri2Ardianto Prasetiyo3Poppy Puspitasari4-Department of Mechanical Engineering, State University of Malang, Semarang Street 5, Malang 65145, Indonesia -Centre of Advanced Materials for Renewable Energy, State University of Malang, SemarangDepartment of Mechanical Engineering, State University of Malang, Semarang Street 5, Malang 65145, IndonesiaDepartment of Mechanical Engineering, State University of Malang, Semarang Street 5, Malang 65145, IndonesiaMaster Program of Mechanical Engineering, Graduate School, State University of Malang, Semarang Street 5, Malang 65145, Indonesia-Department of Mechanical Engineering, State University of Malang, Semarang Street 5, Malang 65145, Indonesia -Centre of Advanced Materials for Renewable Energy, State University of Malang, SemarangThe impact of MgCO3 and Al2O3 additives on the thermal behavior of Spirulina platensis (SP) biomass during combustion in a thermal analyzer was evaluated to understand their catalytic effect in the decomposition process. The samples were pure SP and a mixture of SP and additives at mass fractions of 3, 6, and 9 (wt,%). Each sample of around 8.5 mg was mounted in a thermobalance and subjected to a furnace on a heating program of 10oC/min. The 100 ml/min air atmosphere was kept continuously flowing during the combustion process from 30–1200oC. The thermal behavior of the sample was then characterized from the thermogravimetric (TG) and derivative thermogravimetric (DTG) curves, those were recorded by a computer during the experiment. The Horowitz–Metzger method was used to evaluate the impact of additives on the kinetic parameters of the samples. The results indicated that the presence of additives shifted the main decomposition stage toward a lesser temperature. The rate of mass loss (ML) in the main decomposition zone decreased in the 1st peak and increased in the 2nd, in accordance with the increase in the fraction of additives. This indicates that additives play different roles during the decomposition process. The mass mean activation energy (Em) increased at the additive fraction of 3% for both MgCO3 and Al2O3, as well as at 6% MgCO3 compared to combustion with no additives. Conversely, the presence of greater additives promoted a shift in Em toward smaller values. These results confirm that both additives significantly influenced the thermal behavior and kinetics of the SP combustion.http://ijtech.eng.ui.ac.id/article/view/3611additivescombustionmicroalgaespirulina platensisthermogravimetry |
| spellingShingle | Sukarni Sukarni Sumarli Sumarli Imam Muda Nauri Ardianto Prasetiyo Poppy Puspitasari Thermogravimetric Analysis on Combustion Behavior of Marine Microalgae Spirulina Platensis Induced by MgCO3 and Al2O3 Additives International Journal of Technology additives combustion microalgae spirulina platensis thermogravimetry |
| title | Thermogravimetric Analysis on Combustion Behavior of Marine Microalgae Spirulina Platensis Induced by MgCO3 and Al2O3 Additives |
| title_full | Thermogravimetric Analysis on Combustion Behavior of Marine Microalgae Spirulina Platensis Induced by MgCO3 and Al2O3 Additives |
| title_fullStr | Thermogravimetric Analysis on Combustion Behavior of Marine Microalgae Spirulina Platensis Induced by MgCO3 and Al2O3 Additives |
| title_full_unstemmed | Thermogravimetric Analysis on Combustion Behavior of Marine Microalgae Spirulina Platensis Induced by MgCO3 and Al2O3 Additives |
| title_short | Thermogravimetric Analysis on Combustion Behavior of Marine Microalgae Spirulina Platensis Induced by MgCO3 and Al2O3 Additives |
| title_sort | thermogravimetric analysis on combustion behavior of marine microalgae spirulina platensis induced by mgco3 and al2o3 additives |
| topic | additives combustion microalgae spirulina platensis thermogravimetry |
| url | http://ijtech.eng.ui.ac.id/article/view/3611 |
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