1. Waste-free technology of wastewater treatment to obtain microalgal biomass for biodiesel production.
- Author
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Zayadan, Bolatkhan K., Sadvakasova, Asemgul K., Usserbayeva, Aizhan A., Bolatkhan, Kenzhegul, Baizhigitova, Aizhan M., Akmukhanova, Nurziya R., Sidorov, Roman A., Sinetova, Maria A., and Los, Dmitry A.
- Subjects
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WASTEWATER treatment , *BIODIESEL fuel manufacturing , *MICROALGAE , *PHORMIDIUM , *SEWAGE purification - Abstract
Five axenic cultures of microalgae were isolated from the wastewater of Almaty city and identified as Chlorella vulgaris strain № 1, Chlorella sp. strain № 3, Scenedesmus obliquus , Phormidium foveolarum and Lyngbya limnetica . Among these strains, C. vulgaris strain № 1 was characterized by the maximum growth rate and the highest productivity. Mass cultivation of this strain in wastewater resulted in accumulation of 5 × 10 7 cells per ml in 16 days, and in the removal of ∼95% of pollutants from water. Cells of C. vulgaris consisted of ∼35% proteins, 29% carbohydrates, 30% lipids, and 6% ash, as calculated on a dry weight basis. The major fatty-acids of C. vulgaris were represented by palmitic, cis -7,10-hexadecenoic acid, linoleic, and α-linolenic acids. Culturing in wastewater decreased the unsaturation index of FAs. Thus, C. vulgaris cells are suitable for both waste water purification and accumulation of biomass for further biodiesel production. [ABSTRACT FROM AUTHOR]
- Published
- 2017
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