A Comparative Study of <i>Scenedesmus dimorphus</i> Cultured with Synthetic and Actual Wastewater
This study compared the growth of the microalgae <i>Scenedesmus dimorphus</i> in synthetic wastewater and actual wastewater under different cultivation conditions, in terms of nitrogen and phosphorus availability, wastewater quality, light condition and CO<sub>2</sub> additio...
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| Autores principales: | , |
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| Formato: | article |
| Lenguaje: | EN |
| Publicado: |
MDPI AG
2021
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| Materias: | |
| Acceso en línea: | https://doaj.org/article/86611afdb817457292e2548c3f3c165c |
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| Sumario: | This study compared the growth of the microalgae <i>Scenedesmus dimorphus</i> in synthetic wastewater and actual wastewater under different cultivation conditions, in terms of nitrogen and phosphorus availability, wastewater quality, light condition and CO<sub>2</sub> addition. The results show that the form of nitrogen source had a significant effect on the growth of microalgae. Urea as a nitrogen source increased the growth rate of <i>S. dimorphus</i> significantly, while the high concentration of inorganic nitrogen inhibited the growth. When phosphate was 4 mg/L and pH was 7, the growth of <i>S. dimorphus</i> was the greatest. The bacteria in actual wastewater not only promote the growth of microalgae but also facilitate the formation of flocs, which is conducive to biomass harvest. With the increase in light intensity and light duration, <i>S. dimorphus</i> showed primarily an increasing and then a decreasing trend. Higher light intensity was required in actual wastewater than in synthetic wastewater, which may be due to the barrier effect of wastewater turbidity. <i>S. dimorphus</i> grew well in both kinds of wastewater with the addition of 2% CO<sub>2</sub>. |
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