Effects of Temperature and Light on Microalgal Growth and Nutrient Removal in Turtle Aquaculture Wastewater
The aim of this study was to explore the effects of temperature and light on microalgal growth and nutrient removal in turtle aquaculture wastewater using a single-factor experiment method. Results showed that the growth process of <i>Desmodesmus</i> sp. CHX1 in turtle aquaculture wastew...
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MDPI AG
2024-11-01
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| author | Xiaosong Tian Xiaoai Lin Qing Xie Jinping Liu Longzao Luo |
| author_facet | Xiaosong Tian Xiaoai Lin Qing Xie Jinping Liu Longzao Luo |
| author_sort | Xiaosong Tian |
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| description | The aim of this study was to explore the effects of temperature and light on microalgal growth and nutrient removal in turtle aquaculture wastewater using a single-factor experiment method. Results showed that the growth process of <i>Desmodesmus</i> sp. CHX1 in turtle aquaculture wastewater exhibited three stages, namely adaptation, logarithmic, and stable periods. Temperature and light significantly influenced the growth and protein and lipid accumulation of <i>Desmodesmus</i> sp. CHX1. The optimal conditions for the growth and biomass accumulation of <i>Desmodesmus</i> sp. CHX1 included a temperature of 30 °C, a photoperiod of 24L:0D, and a light intensity of 180 μmol photon/(m<sup>2</sup>·s). Increased temperature, photoperiod, and light intensity enhanced nutrient removal efficiency. Maximum nitrogen removal was achieved at a temperature of 30 °C, a photoperiod of 24L:0D, and a light intensity of 180 μmol photon/(m<sup>2</sup>·s), with the removal efficiency of 86.53%, 97.94%, 99.57%, and 99.15% for ammonia, nitrate, nitrite, and total phosphorus (TP), respectively. Temperature did not significantly affect TP removal, but increased photoperiod and light intensity improved the removal efficiency of TP. The development of microalgae biomass as a feed rich in protein and lipids could address feed shortages and meet the nutritional needs of turtles, offering a feasible solution for large-scale production. |
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| institution | Kabale University |
| issn | 2079-7737 |
| language | English |
| publishDate | 2024-11-01 |
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| spelling | doaj-art-4f58d30ac61a4d7f9c0eb22b0b1d7c9f2024-11-26T17:52:23ZengMDPI AGBiology2079-77372024-11-01131190110.3390/biology13110901Effects of Temperature and Light on Microalgal Growth and Nutrient Removal in Turtle Aquaculture WastewaterXiaosong Tian0Xiaoai Lin1Qing Xie2Jinping Liu3Longzao Luo4Chongqing Vocational Institute of Engineering, College of Resources and Safety, Chongqing 402260, ChinaSchool of Chemistry and Environmental Science, College of Life Science, Shangrao Normal University, Shangrao 334001, ChinaChongqing Vocational Institute of Engineering, College of Resources and Safety, Chongqing 402260, ChinaSchool of Chemistry and Environmental Science, College of Life Science, Shangrao Normal University, Shangrao 334001, ChinaSchool of Chemistry and Environmental Science, College of Life Science, Shangrao Normal University, Shangrao 334001, ChinaThe aim of this study was to explore the effects of temperature and light on microalgal growth and nutrient removal in turtle aquaculture wastewater using a single-factor experiment method. Results showed that the growth process of <i>Desmodesmus</i> sp. CHX1 in turtle aquaculture wastewater exhibited three stages, namely adaptation, logarithmic, and stable periods. Temperature and light significantly influenced the growth and protein and lipid accumulation of <i>Desmodesmus</i> sp. CHX1. The optimal conditions for the growth and biomass accumulation of <i>Desmodesmus</i> sp. CHX1 included a temperature of 30 °C, a photoperiod of 24L:0D, and a light intensity of 180 μmol photon/(m<sup>2</sup>·s). Increased temperature, photoperiod, and light intensity enhanced nutrient removal efficiency. Maximum nitrogen removal was achieved at a temperature of 30 °C, a photoperiod of 24L:0D, and a light intensity of 180 μmol photon/(m<sup>2</sup>·s), with the removal efficiency of 86.53%, 97.94%, 99.57%, and 99.15% for ammonia, nitrate, nitrite, and total phosphorus (TP), respectively. Temperature did not significantly affect TP removal, but increased photoperiod and light intensity improved the removal efficiency of TP. The development of microalgae biomass as a feed rich in protein and lipids could address feed shortages and meet the nutritional needs of turtles, offering a feasible solution for large-scale production.https://www.mdpi.com/2079-7737/13/11/901nutrient removal<i>Desmodesmus</i> sp. CHX1biomasstemperaturelight |
| spellingShingle | Xiaosong Tian Xiaoai Lin Qing Xie Jinping Liu Longzao Luo Effects of Temperature and Light on Microalgal Growth and Nutrient Removal in Turtle Aquaculture Wastewater Biology nutrient removal <i>Desmodesmus</i> sp. CHX1 biomass temperature light |
| title | Effects of Temperature and Light on Microalgal Growth and Nutrient Removal in Turtle Aquaculture Wastewater |
| title_full | Effects of Temperature and Light on Microalgal Growth and Nutrient Removal in Turtle Aquaculture Wastewater |
| title_fullStr | Effects of Temperature and Light on Microalgal Growth and Nutrient Removal in Turtle Aquaculture Wastewater |
| title_full_unstemmed | Effects of Temperature and Light on Microalgal Growth and Nutrient Removal in Turtle Aquaculture Wastewater |
| title_short | Effects of Temperature and Light on Microalgal Growth and Nutrient Removal in Turtle Aquaculture Wastewater |
| title_sort | effects of temperature and light on microalgal growth and nutrient removal in turtle aquaculture wastewater |
| topic | nutrient removal <i>Desmodesmus</i> sp. CHX1 biomass temperature light |
| url | https://www.mdpi.com/2079-7737/13/11/901 |
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