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Article

A Comparative Study of the Growth and Nutrient Removal Effects of Five Green Microalgae in Simulated Domestic Sewage

by 1, 1, 1, 2 and 3,*
1
School of Environmental Science and Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, China
2
School of Chemical and Biological Engineering, Taiyuan University of Science and Technology, Taiyuan 030021, China
3
Shanxi Key Laboratory for Research and Development of Regional Plants, School of Life Science, Shanxi University, Taiyuan 030006, China
*
Author to whom correspondence should be addressed.
Academic Editor: Ignacio de Godos
Water 2021, 13(24), 3613; https://doi.org/10.3390/w13243613
Received: 3 November 2021 / Revised: 5 December 2021 / Accepted: 9 December 2021 / Published: 16 December 2021
(This article belongs to the Special Issue Water Pollution and Its Impact on Human Health)
Microalgae have shown great potential in wastewater treatment. This study evaluates the growth and nutrient removal characteristics of five different microalgae strains, namely Chlorella vulgaris, Tetradesmus obliquus, Parachlorella kessleri, Hydrodictyon sp., and Scenedesmus quadricauda, in simulated domestic wastewater. The five microalgae could adapt to wastewater, but the growth potential and nitrogen removal capacity were species dependent. The nutrient removal effect of the microalgae used in this experiment was about 50% in the first two days. Parachlorella kessleri, selected from the five strains of green algae, shows good potential in removing nutrients from simulated domestic wastewater. For the simulated domestic sewage treated with Parachlorella kessleri, the chemical oxygen demand was almost completely reduced, and ammonium-N (NH4-N) and total nitrogen (TN) removal exceeded 70% at the end of the 10-day treatment. Total phosphorus (TP) removal was slightly worse, more than 65%. Parachlorella kessleri showed the best growth in sewage with the highest biomass reaching 366.67 mg L−1 and the highest specific growth rate reaching 0.538 d−1. This study can provide a reference for selecting suitable microalgae species to treat actual domestic sewage. View Full-Text
Keywords: green algae; growth characteristics; nutrient removal; simulated domestic sewage green algae; growth characteristics; nutrient removal; simulated domestic sewage
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MDPI and ACS Style

Ji, L.; Ge, Q.; Li, Y.; Gao, Y.; Xie, S. A Comparative Study of the Growth and Nutrient Removal Effects of Five Green Microalgae in Simulated Domestic Sewage. Water 2021, 13, 3613. https://doi.org/10.3390/w13243613

AMA Style

Ji L, Ge Q, Li Y, Gao Y, Xie S. A Comparative Study of the Growth and Nutrient Removal Effects of Five Green Microalgae in Simulated Domestic Sewage. Water. 2021; 13(24):3613. https://doi.org/10.3390/w13243613

Chicago/Turabian Style

Ji, Li, Qili Ge, Yuan Li, Yifan Gao, and Shulian Xie. 2021. "A Comparative Study of the Growth and Nutrient Removal Effects of Five Green Microalgae in Simulated Domestic Sewage" Water 13, no. 24: 3613. https://doi.org/10.3390/w13243613

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