COMPARATIVE ANALYSIS OF PHOTOBIOREACTOR DESIGNS FOR MICROALGAE CULTIVATION

 

https://doi.org/10.31073/ecobezpeka202507-14

 

 Lesia Pavliukh

 Victor Repeta

 

 Abstract.

Environmental pollution is a matter of deep concern, especially after the invasion of Ukraine by the Russian Federation. The strategic importance of fresh water is widely recognised, but at the same time, a number of questions arise regarding the sustainable management of water resources in any scientific, social or political programme around the world. The world’s water resources face serious quantitative and qualitative threats, despite the fact that environmental legislation is becoming increasingly stringent. This issue is particularly acute in the context of hostilities. The damaged and destroyed infrastructure has led to the degradation of ecosystems due to the inflow of untreated wastewater containing a significant amount of pollutants, including phosphorus and nitrogen compounds, which cause eutrophication of water bodies. Today, microalgae are a very valuable raw material, as they are not only involved in the removal of nutrients from wastewater in the process of post-treatment, but also a promising biofuel in the context of the energy crisis. The production of valuable microalgae biomass by cultivating them in closed systems - photobioreactors - is gaining popularity, as open systems do not always cope with the task due to their sensitivity to changes in ambient temperature, which vary significantly in different regions of Ukraine and the world. There are different designs of photobioreactors that have their advantages and disadvantages. The most important parameters that affect the efficiency of photobioreactors are: type of bioreactor; bioreactor shape; temperature control; economical carbon dioxide waste; high-quality simulation of the growing medium; material; terrain; controlled hydrodynamics; and freedom of cultivation. The combination of biotechnology with innovative approaches to growing microalgae and unicellular organisms opens up new opportunities for sustainable industrial development and environmental safety in the water and wastewater sector.

 

Keywords: Photobioreactor,сникові гази; BAT.