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Isolation of a freshwater microalgae and its application for the treatment of wastewater and obtaining fatty acids from tilapia cultivation.
- Source :
-
Environmental science and pollution research international [Environ Sci Pollut Res Int] 2020 Aug; Vol. 27 (23), pp. 28575-28584. Date of Electronic Publication: 2020 Mar 24. - Publication Year :
- 2020
-
Abstract
- In the present study, isolated strains of the microalgae Chlamydomonas sp. (CH) and Chlorella vulgaris (CV) were used to treat aquaculture wastewater and to obtain fatty acids and from a fattening culture of tilapia. The microalgae were cultivated for 11 days in tubular photobioreactors with an operating volume of 2 L, constant aeration and illumination. High removal rates of NO <subscript>3</subscript> <superscript>-</superscript> and PO <subscript>4</subscript> <superscript>3-</superscript> were achieved for both Chlamydomonas sp. (84.7% and 96%, respectively) and Chlorella vulgaris (94.6 and 97.9%, respectively). The maximum biomass productivity achieved by Chlamydomonas sp. was 0.06 and 0.10 gL <superscript>-1</superscript> d <superscript>-1</superscript> for Chlorella vulgaris. Therefore, tilapia wastewater contained the necessary nutrient concentration for algal growth and development. Chlamydomonas sp. biomass lipid content was 69%, while that of Chlorella vulgaris was 40%. The lipid profile of both microalgae was abundant in palmitic acid (78% for Chlamydomonas sp. and 35% for Chlorella vulgaris). This fatty acid is suitable for biodiesel production. Tilapia wastewater is low-cost alternative culture medium as it contains the necessary nutrient concentration for microalgae development and growth.
Details
- Language :
- English
- ISSN :
- 1614-7499
- Volume :
- 27
- Issue :
- 23
- Database :
- MEDLINE
- Journal :
- Environmental science and pollution research international
- Publication Type :
- Academic Journal
- Accession number :
- 32212076
- Full Text :
- https://doi.org/10.1007/s11356-020-08308-z