In the framework of project “Harnessing Algae Power for Pollution Reduction and Blue Growth” (project acronym – AlgaeRevive, project code – BSB00091) within the framework of the (Interreg VI-B) NEXT Black Sea Basin Programme, financed by the European Union OSAU is successfully conducting the research for input to “Establishment of the Black Sea Algae Knowledge Hub”.
The studies were conducted from June 27 to August 13, 2025. Water samples from Lake Yalpug were collected on June 27 and August 2, 2025. Water sampling from the Black Sea was carried out on August 11-13. The water sampling points were located in the coastal strip of Lake Yalpug and were selected depending on the intensity of macrophyte algae growth. The main type of algae that was used when selecting a water sampling point was Cladophora glomerata. The water sampling points from the Black Sea were located on the coast of the city of Odesa.
The list of indicators were determined.
Glass bioreactors with a capacity of 30 l were used for cultivation of other algae type. Cultivation conditions: artificial lighting, constant, with a power of 15 W per reactor. The composition of the nutrient medium: potassium nitrate – 5 g/l, magnesium sulfate – 2.5 g/l, potassium dihydrogen phosphate – 1.25 g/l, EDTA – 0.037 g/l, iron sulfate – 0.009 g/l.
Ir was determined that in natural reservoirs, alkaline pH was observed, which ranged from 8.8 to 9.5. Unlike natural reservoirs, in the artificial medium the pH was slightly acidic (6.4-6.7). The redox potential did not have significant differences between the artificial medium and water from natural sources, with the exception of water from Lake Yalpug at the end of June. Natural reservoirs had significantly higher salinity, total mineralization and electrical conductivity compared to the artificial medium. In comparison of the artificial medium solution with sea water, salinity, total mineralization and electrical conductivity were 3-5 times lower, and in comparison with water from Lake Yalpug, 14-200 times lower. The concentration of dissolved oxygen was the lowest in sea water (5.5 mg/l) and the highest in the culture medium at the beginning of Chlorella growth (9.4 mg/l). Turbidity was also the lowest in sea water (2 units) and the highest in the nutrient medium at the end of the growth phase (610 units). The temperature was a dynamically changing indicator and fluctuated for the samples in the range of 22-31 t oС.
The project is being implemented between September 3, 2024, and March 2, 2027, and has a total value of €1470899.04 of which €1329809.13 is funding provided by the European Union through the (Interreg VI-B) NEXT Black Sea Basin Programme. As a partner, Odesa State Agrarian University partner eligible budget is €219564,00.
OSAU is grateful to EU and project consortium for the opportunity to make a great input to algae cultivation and marine pollution reduction.
“Harnessing Algae Power for Pollution Reduction and Blue Growth
Odesa State Agrarian University
https://osau.edu.ua/en
osau@osau.edu.ua
Publishing date August 29, 2025
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