Influence of acid pre-treatment on microalgal biomass for bioethanol production

The utilisation of microalgal biomass as feedstock for bioethanol production has been very promising owing to the large amounts of carbohydrates embedded in the physiology of the microalgal cell. This is coupled with the potential of microalgae to achieve targets required for high growth rate bioeth...

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Main Authors:	Harun, Razif, Danquah, Michael K.
Format:	Article
Language:	English
Published:	Elsevier 2011
Online Access:	http://psasir.upm.edu.my/id/eprint/40037/ http://psasir.upm.edu.my/id/eprint/40037/ http://psasir.upm.edu.my/id/eprint/40037/ http://psasir.upm.edu.my/id/eprint/40037/1/Influence%20of%20acid%20pre-treatment%20on%20microalgal%20biomass%20for%20bioethanol%20production.pdf

id	upm-40037
recordtype	eprints
spelling	upm-400372015-08-27T00:59:18Z http://psasir.upm.edu.my/id/eprint/40037/ Influence of acid pre-treatment on microalgal biomass for bioethanol production Harun, Razif Danquah, Michael K. The utilisation of microalgal biomass as feedstock for bioethanol production has been very promising owing to the large amounts of carbohydrates embedded in the physiology of the microalgal cell. This is coupled with the potential of microalgae to achieve targets required for high growth rate bioethanol production, climate change mitigation and economic growth. The high content of complex carbohydrates entrapped in the cell wall of the microalgae makes it essential to incorporate a pre-treatment stage to release and convert these complex carbohydrates into simple sugars prior to the fermentation process. Hence, this study explores the influence of acid exposure as a microalgal pre-treatment strategy for bioethanol production. Different parameters were investigated: acid concentration, temperature, microalgae loading and pre-treatment time. A central composite design technique was employed to optimize the acid pre-treatment conditions. Results showed that the highest bioethanol concentration obtained was 7.20 g/L and this was achieved when the pre-treatment step was performed with 15 g/L of microalgae at 140 °C using 1% (v/v) of sulphuric acid for 30 min. In terms of ethanol yield, ∼52 wt% (g ethanol/g microalgae) maximum was obtained using 10 g/L of microalgae and 3% (v/v) of sulphuric acid under 160 °C for 15 min. The statistical analysis revealed amongst the parameters investigated that temperature is the most critical factor during acid pre-treatment of microalgae for bioethanol production. Elsevier 2011-01 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/40037/1/Influence%20of%20acid%20pre-treatment%20on%20microalgal%20biomass%20for%20bioethanol%20production.pdf Harun, Razif and Danquah, Michael K. (2011) Influence of acid pre-treatment on microalgal biomass for bioethanol production. Process Biochemistry, 46 (1). pp. 304-309. ISSN 1359-5113; ESSN: 1873-3298 http://www.sciencedirect.com/science/article/pii/S1359511310003387 10.1016/j.procbio.2010.08.027
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Putra Malaysia
building	UPM Institutional Repository
collection	Online Access
language	English
description	The utilisation of microalgal biomass as feedstock for bioethanol production has been very promising owing to the large amounts of carbohydrates embedded in the physiology of the microalgal cell. This is coupled with the potential of microalgae to achieve targets required for high growth rate bioethanol production, climate change mitigation and economic growth. The high content of complex carbohydrates entrapped in the cell wall of the microalgae makes it essential to incorporate a pre-treatment stage to release and convert these complex carbohydrates into simple sugars prior to the fermentation process. Hence, this study explores the influence of acid exposure as a microalgal pre-treatment strategy for bioethanol production. Different parameters were investigated: acid concentration, temperature, microalgae loading and pre-treatment time. A central composite design technique was employed to optimize the acid pre-treatment conditions. Results showed that the highest bioethanol concentration obtained was 7.20 g/L and this was achieved when the pre-treatment step was performed with 15 g/L of microalgae at 140 °C using 1% (v/v) of sulphuric acid for 30 min. In terms of ethanol yield, ∼52 wt% (g ethanol/g microalgae) maximum was obtained using 10 g/L of microalgae and 3% (v/v) of sulphuric acid under 160 °C for 15 min. The statistical analysis revealed amongst the parameters investigated that temperature is the most critical factor during acid pre-treatment of microalgae for bioethanol production.
format	Article
author	Harun, Razif Danquah, Michael K.
spellingShingle	Harun, Razif Danquah, Michael K. Influence of acid pre-treatment on microalgal biomass for bioethanol production
author_facet	Harun, Razif Danquah, Michael K.
author_sort	Harun, Razif
title	Influence of acid pre-treatment on microalgal biomass for bioethanol production
title_short	Influence of acid pre-treatment on microalgal biomass for bioethanol production
title_full	Influence of acid pre-treatment on microalgal biomass for bioethanol production
title_fullStr	Influence of acid pre-treatment on microalgal biomass for bioethanol production
title_full_unstemmed	Influence of acid pre-treatment on microalgal biomass for bioethanol production
title_sort	influence of acid pre-treatment on microalgal biomass for bioethanol production
publisher	Elsevier
publishDate	2011
url	http://psasir.upm.edu.my/id/eprint/40037/ http://psasir.upm.edu.my/id/eprint/40037/ http://psasir.upm.edu.my/id/eprint/40037/ http://psasir.upm.edu.my/id/eprint/40037/1/Influence%20of%20acid%20pre-treatment%20on%20microalgal%20biomass%20for%20bioethanol%20production.pdf
first_indexed	2018-09-07T16:57:00Z
last_indexed	2018-09-07T16:57:00Z
_version_	1610968644238442496

Influence of acid pre-treatment on microalgal biomass for bioethanol production

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