Screening and Optimising Metal Salt Concentration for Harvesting Nannochloropsis Sp. by Flocculation

Biodiesel, a renewable fuels that are non-toxic and biodegradable, is constantly increasing in demand as the reservoir of fossil fuel are depleting. The microalgae biomass with high oil content is significant as a sustainable resource for biodiesel production. Production of biodiesel using microalga...

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Main Authors:	Chua, Gek Kee, Nur Anis, Saarani
Format:	Article
Language:	English English
Published:	Malaysian Technical Universities Network (MTUN) 2015
Subjects:	Q Science (General) TP Chemical technology
Online Access:	http://umpir.ump.edu.my/id/eprint/11958/ http://umpir.ump.edu.my/id/eprint/11958/ http://umpir.ump.edu.my/id/eprint/11958/1/Screening%20%26%20optimising%20metal%20salt%20conc%20for%20harvesting%20Nannochloropsis%20sp%20by%20flocculation.pdf http://umpir.ump.edu.my/id/eprint/11958/7/fkksa-2015-chua-Screening%20and%20Optimising.pdf

id	ump-11958
recordtype	eprints
spelling	ump-119582018-05-14T04:29:06Z http://umpir.ump.edu.my/id/eprint/11958/ Screening and Optimising Metal Salt Concentration for Harvesting Nannochloropsis Sp. by Flocculation Chua, Gek Kee Nur Anis, Saarani Q Science (General) TP Chemical technology Biodiesel, a renewable fuels that are non-toxic and biodegradable, is constantly increasing in demand as the reservoir of fossil fuel are depleting. The microalgae biomass with high oil content is significant as a sustainable resource for biodiesel production. Production of biodiesel using microalgae biomass appears to be a feasible alternative due to no confliction with food supply compared with the first generation biofuels. This report deals with the screening and optimisation of metal salts for harvesting marine microalgae by flocculation. The metal salts studies are ferric chloride, aluminium sulphate and ferric sulphate. Wild Nannochloropsis strains of microalgae were cultivated aseptically in sea water for 7 days, after that the microalgae was harvested by using flocculation step with different concentration of metal salt. In order to monitor the efficiency of the metal salt, the turbidity region of microalgae in glass cylinder before and after flocculation was observed. Besides that cell dry weight was also compared for three flocculation agent used. The most efficient metal salt was then further optimized for its best performed concentration and pH. Chloride salts (FeCl3) was found to be more efficient in comparison with sulfate salts (Al2(SO4)3 and Fe2(SO4)3) in harvesting microalgae. Ferric Chloride was further optimized, where the optimum pH and concentration of FeCl3 are 8.5 and 1.0 M, with flocculation efficiency of 90 % and cell dry weight of 3.8 g. In conclusion, 1.0 M ferric chloride salt at pH 8.5 is optimum in harvesting Nannochloropsis microalgae by flocculation. Malaysian Technical Universities Network (MTUN) 2015-12 Article PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/11958/1/Screening%20%26%20optimising%20metal%20salt%20conc%20for%20harvesting%20Nannochloropsis%20sp%20by%20flocculation.pdf application/pdf en http://umpir.ump.edu.my/id/eprint/11958/7/fkksa-2015-chua-Screening%20and%20Optimising.pdf Chua, Gek Kee and Nur Anis, Saarani (2015) Screening and Optimising Metal Salt Concentration for Harvesting Nannochloropsis Sp. by Flocculation. Journal of Engineering and Technology, 6 (2). pp. 109-120. ISSN 2180-3811 (print); 2289-814X (online) http://journal.utem.edu.my/index.php/jet/article/view/514
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English English
topic	Q Science (General) TP Chemical technology
spellingShingle	Q Science (General) TP Chemical technology Chua, Gek Kee Nur Anis, Saarani Screening and Optimising Metal Salt Concentration for Harvesting Nannochloropsis Sp. by Flocculation
description	Biodiesel, a renewable fuels that are non-toxic and biodegradable, is constantly increasing in demand as the reservoir of fossil fuel are depleting. The microalgae biomass with high oil content is significant as a sustainable resource for biodiesel production. Production of biodiesel using microalgae biomass appears to be a feasible alternative due to no confliction with food supply compared with the first generation biofuels. This report deals with the screening and optimisation of metal salts for harvesting marine microalgae by flocculation. The metal salts studies are ferric chloride, aluminium sulphate and ferric sulphate. Wild Nannochloropsis strains of microalgae were cultivated aseptically in sea water for 7 days, after that the microalgae was harvested by using flocculation step with different concentration of metal salt. In order to monitor the efficiency of the metal salt, the turbidity region of microalgae in glass cylinder before and after flocculation was observed. Besides that cell dry weight was also compared for three flocculation agent used. The most efficient metal salt was then further optimized for its best performed concentration and pH. Chloride salts (FeCl3) was found to be more efficient in comparison with sulfate salts (Al2(SO4)3 and Fe2(SO4)3) in harvesting microalgae. Ferric Chloride was further optimized, where the optimum pH and concentration of FeCl3 are 8.5 and 1.0 M, with flocculation efficiency of 90 % and cell dry weight of 3.8 g. In conclusion, 1.0 M ferric chloride salt at pH 8.5 is optimum in harvesting Nannochloropsis microalgae by flocculation.
format	Article
author	Chua, Gek Kee Nur Anis, Saarani
author_facet	Chua, Gek Kee Nur Anis, Saarani
author_sort	Chua, Gek Kee
title	Screening and Optimising Metal Salt Concentration for Harvesting Nannochloropsis Sp. by Flocculation
title_short	Screening and Optimising Metal Salt Concentration for Harvesting Nannochloropsis Sp. by Flocculation
title_full	Screening and Optimising Metal Salt Concentration for Harvesting Nannochloropsis Sp. by Flocculation
title_fullStr	Screening and Optimising Metal Salt Concentration for Harvesting Nannochloropsis Sp. by Flocculation
title_full_unstemmed	Screening and Optimising Metal Salt Concentration for Harvesting Nannochloropsis Sp. by Flocculation
title_sort	screening and optimising metal salt concentration for harvesting nannochloropsis sp. by flocculation
publisher	Malaysian Technical Universities Network (MTUN)
publishDate	2015
url	http://umpir.ump.edu.my/id/eprint/11958/ http://umpir.ump.edu.my/id/eprint/11958/ http://umpir.ump.edu.my/id/eprint/11958/1/Screening%20%26%20optimising%20metal%20salt%20conc%20for%20harvesting%20Nannochloropsis%20sp%20by%20flocculation.pdf http://umpir.ump.edu.my/id/eprint/11958/7/fkksa-2015-chua-Screening%20and%20Optimising.pdf
first_indexed	2023-09-18T22:13:04Z
last_indexed	2023-09-18T22:13:04Z
_version_	1777415156484014080

Screening and Optimising Metal Salt Concentration for Harvesting Nannochloropsis Sp. by Flocculation

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