Effect of trophic conditions on microalga growth, nutrient removal, algal organic matter, and energy storage products in Scenedesmus (Acutodesmus) obliquus KGE-17 cultivation
| Autor: | A. Na Chae, Joonhong Park, Wook Choi, Kyung Guen Song, Byungchan Lee |
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| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
Carbohydrates Heterotroph chemistry.chemical_element Bioengineering Wastewater 01 natural sciences Water Purification Nutrient 010608 biotechnology Microalgae Organic matter Biomass Food science Scenedesmus chemistry.chemical_classification biology 010405 organic chemistry Phosphorus General Medicine biology.organism_classification Lipids 0104 chemical sciences chemistry Biofuels Sewage treatment Industrial and production engineering Mixotroph Biotechnology |
| Zdroj: | Bioprocess and Biosystems Engineering. 42:1225-1234 |
| ISSN: | 1615-7605 1615-7591 |
| DOI: | 10.1007/s00449-019-02120-x |
| Popis: | This study compared the performance of microalga growth, nutrient removal, algal organic matter, and energy storage products in mixotrophic, photoautotrophic, and heterotrophic conditions. Scenedesmus obliquus was used as a model species. Mixotrophic condition showed the highest specific growth rate of 0.96 d−1 as well as the fastest nitrogen and phosphorus removal rate of 85.17 mg-N g-cell−1 day−1 and 11.49 mg-P g-cell−1 day−1, respectively, compared with photoautotrophic and heterotrophic conditions. Mixotrophic microalgae had relatively higher carbohydrates and lipids contents (21.8 and 24.0%) than photoautotrophic and heterotrophic conditions. Meanwhile, algal organic matter (AOM) in the medium was produced at the highest level under photoautotrophic condition. Mixotrophic condition was more efficient in terms of microalga growth, nutrient removal, production of energy storage products, and suppression of AOM, and would be adaptable for wastewater treatment process. |
| Databáze: | OpenAIRE |
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