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Investigation on Pyrolysis of Microalgae Botryococcus braunii and Hapalosiphon sp.

Investigation on Pyrolysis of Microalgae Botryococcus braunii and Hapalosiphon sp.
Investigation on Pyrolysis of Microalgae Botryococcus braunii and Hapalosiphon sp.
In this study, the thermochemical characteristics of two types of microalgae, namely Hapalosiphon sp. and Botryococcus braunii, were investigated by use of a thermogravimetric analyzer. The low calorific value of Hapalosiphon sp. was 14.75 MJ kg–1, which is close to that of sewage sludge or lignocellulosic biomass. However, the low calorific value of B. braunii was as high as 35.58 MJ kg–1 due to 89% of total C and H contents in biomass. Pyrolytic results indicated that the two microalgae had similar pyrolytic temperature ranges. In addition, with increased heating rates, the pyrolytic curves of the microalgae shifted to a higher temperature. However, derivative thermogravimetric (DTG) profiles of the two microalgae are distinct, which showed that different reactions were involved in the pyrolysis process. Hapalosiphon sp. has a lower mean activation energy than B. braunii in the pyrolysis process
0888-5885
10320-10326
Liu, Yong-Qiang
75adc6f8-aa83-484e-9e87-6c8442e344fa
Lim, Lingo R. X.
d21874ce-33be-4b93-8392-1856ca8b6786
Wang, Jing
28dffdc1-cb6c-40da-b595-88dc7bc1cf1d
Yan, Rong
8077e629-df90-4cae-8a85-feb7e435b9e0
Mahakhant, Aparat
1a9ba928-e40e-43ea-aa65-684aba2df011
Liu, Yong-Qiang
75adc6f8-aa83-484e-9e87-6c8442e344fa
Lim, Lingo R. X.
d21874ce-33be-4b93-8392-1856ca8b6786
Wang, Jing
28dffdc1-cb6c-40da-b595-88dc7bc1cf1d
Yan, Rong
8077e629-df90-4cae-8a85-feb7e435b9e0
Mahakhant, Aparat
1a9ba928-e40e-43ea-aa65-684aba2df011

Liu, Yong-Qiang, Lim, Lingo R. X., Wang, Jing, Yan, Rong and Mahakhant, Aparat (2012) Investigation on Pyrolysis of Microalgae Botryococcus braunii and Hapalosiphon sp. Industrial & Engineering Chemistry Research, 51 (31), 10320-10326. (doi:10.1021/ie202799e).

Record type: Article

Abstract

In this study, the thermochemical characteristics of two types of microalgae, namely Hapalosiphon sp. and Botryococcus braunii, were investigated by use of a thermogravimetric analyzer. The low calorific value of Hapalosiphon sp. was 14.75 MJ kg–1, which is close to that of sewage sludge or lignocellulosic biomass. However, the low calorific value of B. braunii was as high as 35.58 MJ kg–1 due to 89% of total C and H contents in biomass. Pyrolytic results indicated that the two microalgae had similar pyrolytic temperature ranges. In addition, with increased heating rates, the pyrolytic curves of the microalgae shifted to a higher temperature. However, derivative thermogravimetric (DTG) profiles of the two microalgae are distinct, which showed that different reactions were involved in the pyrolysis process. Hapalosiphon sp. has a lower mean activation energy than B. braunii in the pyrolysis process

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Published date: 6 July 2012
Organisations: Civil Maritime & Env. Eng & Sci Unit

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Local EPrints ID: 351879
URI: http://eprints.soton.ac.uk/id/eprint/351879
ISSN: 0888-5885
PURE UUID: 0a426869-d5e6-452d-ad1e-bac63be6df56

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Date deposited: 25 Apr 2013 14:22
Last modified: 16 Jul 2019 21:35

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Contributors

Author: Yong-Qiang Liu
Author: Lingo R. X. Lim
Author: Jing Wang
Author: Rong Yan
Author: Aparat Mahakhant

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