Non-isothermal kinetic study of de-oiled seeds cake of African star apple (Chrosophyllum albidum) using thermogravimetry
Thermal decomposition and kinetics behaviour of the de-oiled seed cake of African star apple (Chrosophyllum albidum) has been investigated using thermogravimetry under the nitrogen atmosphere from ambient temperature to 900 °C. The thermogravimetric data for the cake decomposition at six different h...
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| Format: | Article |
| Language: | English |
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Elsevier
2016-10-01
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| Series: | Heliyon |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2405844016303784 |
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| author | M.A. Sokoto Rawel Singh Bhavya B. Krishna Jitendra Kumar Thallada Bhaskar |
| author_facet | M.A. Sokoto Rawel Singh Bhavya B. Krishna Jitendra Kumar Thallada Bhaskar |
| author_sort | M.A. Sokoto |
| collection | DOAJ |
| description | Thermal decomposition and kinetics behaviour of the de-oiled seed cake of African star apple (Chrosophyllum albidum) has been investigated using thermogravimetry under the nitrogen atmosphere from ambient temperature to 900 °C. The thermogravimetric data for the cake decomposition at six different heating rates (5, 10, 15, 20, 30 and 40 °C/min) were used to evaluate the kinetic decomposition of the cake using Friedman (FD), Kissinger-Akahira-Sunose (KAS) and Flynn-Wall-Ozawa (FWO) models. Thermal decomposition of the cake showed thermograms indicating dehydration and devolitilization stages (200–400 °C). The maximum temperature for the decomposition of the cake (Tmax) increases from 289.42–335.96 °C with increase in heating rates. The average apparent activation energy (Ea) values of 153.15, 145.14 and 147.15 kJ/mol were calculated using Friedman, Kissinger-Akahira-Sunose, and Flynn-Wall-Ozawa models respectively. The extent of mass conversion (α) shows dependence on apparent activation Ea values which is an evidence of multi-step decomposition kinetic. The thermal profile and kinetic data obtained could be helpful in evaluating the thermal stability of the cake as well as modeling, designing and developing a thermo-chemical system for the conversion of the cake to fuel. |
| first_indexed | 2024-12-21T03:34:17Z |
| format | Article |
| id | doaj.art-c980325e5f9e4f7982000dcee8692383 |
| institution | Directory Open Access Journal |
| issn | 2405-8440 |
| language | English |
| last_indexed | 2024-12-21T03:34:17Z |
| publishDate | 2016-10-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Heliyon |
| spelling | doaj.art-c980325e5f9e4f7982000dcee86923832022-12-21T19:17:23ZengElsevierHeliyon2405-84402016-10-01210e00172Non-isothermal kinetic study of de-oiled seeds cake of African star apple (Chrosophyllum albidum) using thermogravimetryM.A. Sokoto0Rawel Singh1Bhavya B. Krishna2Jitendra Kumar3Thallada Bhaskar4Department of Pure and Applied Chemistry, Usmanu Danfodiyo University, Sokoto, Nigeria; Corresponding author.CSIR-Indian Institute of Petroleum, Biofuels Division, Dehradun, IndiaCSIR-Indian Institute of Petroleum, Biofuels Division, Dehradun, IndiaCSIR-Indian Institute of Petroleum, Biofuels Division, Dehradun, IndiaCSIR-Indian Institute of Petroleum, Biofuels Division, Dehradun, IndiaThermal decomposition and kinetics behaviour of the de-oiled seed cake of African star apple (Chrosophyllum albidum) has been investigated using thermogravimetry under the nitrogen atmosphere from ambient temperature to 900 °C. The thermogravimetric data for the cake decomposition at six different heating rates (5, 10, 15, 20, 30 and 40 °C/min) were used to evaluate the kinetic decomposition of the cake using Friedman (FD), Kissinger-Akahira-Sunose (KAS) and Flynn-Wall-Ozawa (FWO) models. Thermal decomposition of the cake showed thermograms indicating dehydration and devolitilization stages (200–400 °C). The maximum temperature for the decomposition of the cake (Tmax) increases from 289.42–335.96 °C with increase in heating rates. The average apparent activation energy (Ea) values of 153.15, 145.14 and 147.15 kJ/mol were calculated using Friedman, Kissinger-Akahira-Sunose, and Flynn-Wall-Ozawa models respectively. The extent of mass conversion (α) shows dependence on apparent activation Ea values which is an evidence of multi-step decomposition kinetic. The thermal profile and kinetic data obtained could be helpful in evaluating the thermal stability of the cake as well as modeling, designing and developing a thermo-chemical system for the conversion of the cake to fuel.http://www.sciencedirect.com/science/article/pii/S2405844016303784Physical chemistryAnalytical chemistry |
| spellingShingle | M.A. Sokoto Rawel Singh Bhavya B. Krishna Jitendra Kumar Thallada Bhaskar Non-isothermal kinetic study of de-oiled seeds cake of African star apple (Chrosophyllum albidum) using thermogravimetry Heliyon Physical chemistry Analytical chemistry |
| title | Non-isothermal kinetic study of de-oiled seeds cake of African star apple (Chrosophyllum albidum) using thermogravimetry |
| title_full | Non-isothermal kinetic study of de-oiled seeds cake of African star apple (Chrosophyllum albidum) using thermogravimetry |
| title_fullStr | Non-isothermal kinetic study of de-oiled seeds cake of African star apple (Chrosophyllum albidum) using thermogravimetry |
| title_full_unstemmed | Non-isothermal kinetic study of de-oiled seeds cake of African star apple (Chrosophyllum albidum) using thermogravimetry |
| title_short | Non-isothermal kinetic study of de-oiled seeds cake of African star apple (Chrosophyllum albidum) using thermogravimetry |
| title_sort | non isothermal kinetic study of de oiled seeds cake of african star apple chrosophyllum albidum using thermogravimetry |
| topic | Physical chemistry Analytical chemistry |
| url | http://www.sciencedirect.com/science/article/pii/S2405844016303784 |
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