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Parametric characterization of air gasification of Chlorella vulgaris biomass

The gasification of green algae Chlorella vulgaris in air was investigated using both a thermogravimetric analyzer (TGA) and a bench scale horizontal axis quartz tube reactor (HQR). The full range of solid state kinetic models produced best fits with TGA results varied for the five subzones of conv...

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Main Authors: Raheem, Abdul, Dupont, Valerie, Channa, Abdul Qadir, Zhao, Xiou, Vuppaladadiyam, Arun K., Yap, Taufiq Yun Hin, Zhao, Ming, Harun, Mohd Razif
Format: Article
Language:English
Published: American Chemical Society 2017
Online Access:http://psasir.upm.edu.my/id/eprint/62640/1/BIOMASS.pdf
http://psasir.upm.edu.my/id/eprint/62640/
https://pubs.acs.org/doi/pdf/10.1021/acs.energyfuels.6b03468
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spelling my.upm.eprints.626402020-12-02T22:32:33Z http://psasir.upm.edu.my/id/eprint/62640/ Parametric characterization of air gasification of Chlorella vulgaris biomass Raheem, Abdul Dupont, Valerie Channa, Abdul Qadir Zhao, Xiou Vuppaladadiyam, Arun K. Yap, Taufiq Yun Hin Zhao, Ming Harun, Mohd Razif The gasification of green algae Chlorella vulgaris in air was investigated using both a thermogravimetric analyzer (TGA) and a bench scale horizontal axis quartz tube reactor (HQR). The full range of solid state kinetic models produced best fits with TGA results varied for the five subzones of conversion vs temperature, with the nucleation and nuclei growth “A2” followed by “A3” or contracting volume models producing close matches for T ≤ 367 °C, a zero-order model between 358 and 468 °C, and contracting surface models for T ≥ 458 °C; each model yielding their set of apparent activation energy (E < 41 kJmol−1) and pre-exponential factors (A > 0.04 s−1) corresponding to rate constants in the range 0.001−0.005 s−1. The HQR was used to investigate the effects of microalgal biomass loading, temperature, and equivalence ratio (ER) on CnHm/CO/H2 gas yield and composition, carbon conversion efficiency (CCE), and lower heating value (LHV) of syngas under air gasification conditions. Increasing microalgal biomass loading from 1 to 2 g led to a decrease in H2 content (24.2−19.5 vol %) in the gases. An optimal temperature of 950 °C resulted in the highest H2, CO, and CH4 yields at 2.9, 22.8, and 10.1 wt % of biomass from a maximum gas yield of 76.1 wt %, and highest H2/CO ratio (1.75) and CCE of 56.3%. The effect of ER was measured in two phases 0.1−0.26 and 0.26−35, respectively. During the first phase, the positive effect of ER played a major part compared to second phase, so the H2 content, H2 yield, CCE, and LHV were increased. American Chemical Society 2017 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/62640/1/BIOMASS.pdf Raheem, Abdul and Dupont, Valerie and Channa, Abdul Qadir and Zhao, Xiou and Vuppaladadiyam, Arun K. and Yap, Taufiq Yun Hin and Zhao, Ming and Harun, Mohd Razif (2017) Parametric characterization of air gasification of Chlorella vulgaris biomass. Energy & Fuels, 31 (3). 2959 - 2969. ISSN 0887-0624; ESSN: 1520-5029 https://pubs.acs.org/doi/pdf/10.1021/acs.energyfuels.6b03468 10.1021/acs.energyfuels.6b03468
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description The gasification of green algae Chlorella vulgaris in air was investigated using both a thermogravimetric analyzer (TGA) and a bench scale horizontal axis quartz tube reactor (HQR). The full range of solid state kinetic models produced best fits with TGA results varied for the five subzones of conversion vs temperature, with the nucleation and nuclei growth “A2” followed by “A3” or contracting volume models producing close matches for T ≤ 367 °C, a zero-order model between 358 and 468 °C, and contracting surface models for T ≥ 458 °C; each model yielding their set of apparent activation energy (E < 41 kJmol−1) and pre-exponential factors (A > 0.04 s−1) corresponding to rate constants in the range 0.001−0.005 s−1. The HQR was used to investigate the effects of microalgal biomass loading, temperature, and equivalence ratio (ER) on CnHm/CO/H2 gas yield and composition, carbon conversion efficiency (CCE), and lower heating value (LHV) of syngas under air gasification conditions. Increasing microalgal biomass loading from 1 to 2 g led to a decrease in H2 content (24.2−19.5 vol %) in the gases. An optimal temperature of 950 °C resulted in the highest H2, CO, and CH4 yields at 2.9, 22.8, and 10.1 wt % of biomass from a maximum gas yield of 76.1 wt %, and highest H2/CO ratio (1.75) and CCE of 56.3%. The effect of ER was measured in two phases 0.1−0.26 and 0.26−35, respectively. During the first phase, the positive effect of ER played a major part compared to second phase, so the H2 content, H2 yield, CCE, and LHV were increased.
format Article
author Raheem, Abdul
Dupont, Valerie
Channa, Abdul Qadir
Zhao, Xiou
Vuppaladadiyam, Arun K.
Yap, Taufiq Yun Hin
Zhao, Ming
Harun, Mohd Razif
spellingShingle Raheem, Abdul
Dupont, Valerie
Channa, Abdul Qadir
Zhao, Xiou
Vuppaladadiyam, Arun K.
Yap, Taufiq Yun Hin
Zhao, Ming
Harun, Mohd Razif
Parametric characterization of air gasification of Chlorella vulgaris biomass
author_facet Raheem, Abdul
Dupont, Valerie
Channa, Abdul Qadir
Zhao, Xiou
Vuppaladadiyam, Arun K.
Yap, Taufiq Yun Hin
Zhao, Ming
Harun, Mohd Razif
author_sort Raheem, Abdul
title Parametric characterization of air gasification of Chlorella vulgaris biomass
title_short Parametric characterization of air gasification of Chlorella vulgaris biomass
title_full Parametric characterization of air gasification of Chlorella vulgaris biomass
title_fullStr Parametric characterization of air gasification of Chlorella vulgaris biomass
title_full_unstemmed Parametric characterization of air gasification of Chlorella vulgaris biomass
title_sort parametric characterization of air gasification of chlorella vulgaris biomass
publisher American Chemical Society
publishDate 2017
url http://psasir.upm.edu.my/id/eprint/62640/1/BIOMASS.pdf
http://psasir.upm.edu.my/id/eprint/62640/
https://pubs.acs.org/doi/pdf/10.1021/acs.energyfuels.6b03468
_version_ 1687395146691248128
score 13.211869

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