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Open AccessArticle

Screening and Evaluation of Some Green Algal Strains (Chlorophyceae) Isolated from Freshwater and Soda Lakes for Biofuel Production

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Department of Environmental Sciences, University of South Africa, Florida 1710, South Africa
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Department of Microbiology, Eötvös Loránd University, Pázmány Péter stny. 1/c., H-1117 Budapest, Hungary
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Department of Plant Biology and Plant Biotechnology, Presidency College, University of Madras, Chennai 600005, Tamil Nadu, India
*
Author to whom correspondence should be addressed.
Academic Editor: Thomas E. Amidon
Energies 2015, 8(7), 7502-7521; https://doi.org/10.3390/en8077502
Received: 13 May 2015 / Revised: 10 June 2015 / Accepted: 23 June 2015 / Published: 22 July 2015
(This article belongs to the Collection Bioenergy and Biofuel)
Microalgae are photosynthetic microorganisms that can produce lipids, proteins and carbohydrates in large amounts and within short periods of time and these can be processed into both biofuels and other useful commercial products. Due to this reason microalgae are considered as a potential source of renewable energy; and one of the most important decisions in obtaining oil from microalgae is the choice of species. In this study, the potential of Chlorophyceae species isolated from freshwater and soda lakes in Hungary and Romania (Central Europe) were characterized and evaluated by determining their biomass accumulation, lipid productivity, fatty acid profiles, and biodiesel properties besides protein and carbohydrate productivity. Out of nine strains tested, three accumulated more than 40% dry weight of protein, four accumulated more than 30% dry weight of carbohydrate and the strain Chlorella vulgaris LC8 accumulated high lipid content (42.1% ± 2.6%) with a favorable C16-C18 fatty acid profile (77.4%) as well as suitable biodiesel properties of high cetane number (57.3), low viscosity (4.7 mm2/s), lower iodine number (75.18 g I2/100 g), relative cloud point (8.8 °C) and negative cold filter plugging point (−6.5 °C). Hence the new strain, Chlorella vulgaris LC8 has potential as a feedstock for the production of excellent quality biodiesel. View Full-Text
Keywords: microalgae; biofuel; fresh water; soda lake; fatty acids microalgae; biofuel; fresh water; soda lake; fatty acids
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Selvarajan, R.; Felföldi, T.; Tauber, T.; Sanniyasi, E.; Sibanda, T.; Tekere, M. Screening and Evaluation of Some Green Algal Strains (Chlorophyceae) Isolated from Freshwater and Soda Lakes for Biofuel Production. Energies 2015, 8, 7502-7521.

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