LAPSE:2023.1554v1
Published Article
LAPSE:2023.1554v1
Gasification Characteristics and Kinetics of Lipid-Extracted Nannochloropsis gaditana
February 21, 2023
Abstract
A thermal behavior study of lipid-extracted Nannochloropsis gaditana (LEA) was performed in a thermogravimetric analyzer. The study was performed by heating the sample under different heating rates (5, 10, and 15 °C/min) from room temperature to 1000 °C using N2 gas as the medium. This is crucial for thermal stability studies in a kinetic control regime. The following three stages of chemical decompositions were found: (1) moisture removal (2) devolatilization (3) fixed carbon decomposition; maximum decomposition was observed at the second stage. Activation energies of the LEA were studied using the Flynn−Wall−Ozawa model and Kissinger−Akahira−Sunose model. Main sample decomposition was observed from 100−700 °C during volatile matter evaporation. The thermal behavior study findings were used for the gasification of the sample with air to study the effect of varying reaction parameters on the compositions of the synthesis gas yield. Maximum H2 yield was found at 700 °C and 0.7 g, which were 51.2 mol% and 50.6 mol%, respectively. From the study, it was found that LEA is suitable to be used as feedstock in gasification for synthesis gas production.
A thermal behavior study of lipid-extracted Nannochloropsis gaditana (LEA) was performed in a thermogravimetric analyzer. The study was performed by heating the sample under different heating rates (5, 10, and 15 °C/min) from room temperature to 1000 °C using N2 gas as the medium. This is crucial for thermal stability studies in a kinetic control regime. The following three stages of chemical decompositions were found: (1) moisture removal (2) devolatilization (3) fixed carbon decomposition; maximum decomposition was observed at the second stage. Activation energies of the LEA were studied using the Flynn−Wall−Ozawa model and Kissinger−Akahira−Sunose model. Main sample decomposition was observed from 100−700 °C during volatile matter evaporation. The thermal behavior study findings were used for the gasification of the sample with air to study the effect of varying reaction parameters on the compositions of the synthesis gas yield. Maximum H2 yield was found at 700 °C and 0.7 g, which were 51.2 mol% and 50.6 mol%, respectively. From the study, it was found that LEA is suitable to be used as feedstock in gasification for synthesis gas production.
Record ID
Keywords
gasification, kinetics model, lipid-extracted algae, Syngas, thermogravimetric analysis
Subject
Suggested Citation
Atikah MSN, Azlina WAKGW, Taufiq-Yap YH, Mahmoud O, El-Shafay AS, Ilyas RA, Harun R. Gasification Characteristics and Kinetics of Lipid-Extracted Nannochloropsis gaditana. (2023). LAPSE:2023.1554v1
Author Affiliations
Atikah MSN: Department of Chemical and Environmental Engineering, Faculty of Engineering, Universiti Putra Malaysia (UPM), Serdang 43400, Malaysia
Azlina WAKGW: Department of Chemical and Environmental Engineering, Faculty of Engineering, Universiti Putra Malaysia (UPM), Serdang 43400, Malaysia
Taufiq-Yap YH: Faculty of Science and Natural Resources, Universiti Malaysia Sabah, Kota Kinabalu 88400, Malaysia; Catalysts Science and Technology Research Centre (PutraCAT), Faculty of Science, Universiti Putra Malaysia, Serdang 43400, Malaysia
Mahmoud O: Petroleum Engineering Department, Faculty of Engineering and Technology, Future University in Egypt, New Cairo 11835, Egypt [ORCID]
El-Shafay AS: Department of Mechanical Engineering, College of Engineering, Prince Sattam bin Abdulaziz University, Alkharj 16273, Saudi Arabia; Mechanical Power Engineering Department, Faculty of Engineering, Mansoura University, Mansoura 35516, Egypt [ORCID]
Ilyas RA: School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, Johor Bahru 81310, Malaysia; Centre for Advanced Composite Materials, Universiti Teknologi Malaysia, Johor Bahru 81310, Malaysia [ORCID]
Harun R: Department of Chemical and Environmental Engineering, Faculty of Engineering, Universiti Putra Malaysia (UPM), Serdang 43400, Malaysia
Azlina WAKGW: Department of Chemical and Environmental Engineering, Faculty of Engineering, Universiti Putra Malaysia (UPM), Serdang 43400, Malaysia
Taufiq-Yap YH: Faculty of Science and Natural Resources, Universiti Malaysia Sabah, Kota Kinabalu 88400, Malaysia; Catalysts Science and Technology Research Centre (PutraCAT), Faculty of Science, Universiti Putra Malaysia, Serdang 43400, Malaysia
Mahmoud O: Petroleum Engineering Department, Faculty of Engineering and Technology, Future University in Egypt, New Cairo 11835, Egypt [ORCID]
El-Shafay AS: Department of Mechanical Engineering, College of Engineering, Prince Sattam bin Abdulaziz University, Alkharj 16273, Saudi Arabia; Mechanical Power Engineering Department, Faculty of Engineering, Mansoura University, Mansoura 35516, Egypt [ORCID]
Ilyas RA: School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, Johor Bahru 81310, Malaysia; Centre for Advanced Composite Materials, Universiti Teknologi Malaysia, Johor Bahru 81310, Malaysia [ORCID]
Harun R: Department of Chemical and Environmental Engineering, Faculty of Engineering, Universiti Putra Malaysia (UPM), Serdang 43400, Malaysia
Journal Name
Processes
Volume
10
Issue
8
First Page
1525
Year
2022
Publication Date
2022-08-03
ISSN
2227-9717
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Original Submission
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PII: pr10081525, Publication Type: Journal Article
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LAPSE:2023.1554v1
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https://doi.org/10.3390/pr10081525
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Feb 21, 2023
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