Simionov Ira-Adeline, Barbu Marian, Vasiliev Iulian, Condrachi Larisa, Titica Mariana, Ifrim George, Cristea Dragos, Nuță Florian Marcel, Petrea Ștefan-Mihai
Department of Food Science, Food Engineering, Biotechnologies and Aquaculture, "Dunarea de Jos" University Galati, 800008, Galati, Romania; Department of Automatic Control and Electrical Engineering, "Dunarea de Jos" University Galati, 800008, Galati, Romania; Rexdan Research Infrastructure, "Dunarea de Jos" University Galati, 800008, Galati, Romania.
Department of Automatic Control and Electrical Engineering, "Dunarea de Jos" University Galati, 800008, Galati, Romania.
J Environ Manage. 2025 Mar;377:124537. doi: 10.1016/j.jenvman.2025.124537. Epub 2025 Feb 27.
Microalgae biomass is a promising resource addressing climate change and play a role in energy transition for generating biofuels. Due to their ability to produce higher yield per year, biofuels obtained from microalgae are considered 3rd generation-advanced biofuels. The industrial production of microalgae mitigates the effects of CO emissions and can be used for wastewater bioremediation since most effluents are rich in nutrients. Using wastewater as growth media for microalgae promotes the principles of circular economy and nutrient recovery. The aquaculture wastewater effluent contains high levels of nitrogenous compounds, as well as phosphates and dissolved organic carbon. The current review aims to identify, centralize, and provide extensive information on the decisive technological and technical factors involved in the growth process of different microalgae species in aquaculture wastewater. The study focuses on technological growth performance indicators, as well as specific control strategies applied to achieve pH control, since it has been highlighted to be one of the most important growth-related cofactors. A bibliometric framework was developed to identify future trends in integrated microalgae production. The scientific literature analysis highlighted the great potential of aquaculture wastewater effluents to be used as growth media for microalgae biomass production, due to superior performance in lipid and carbohydrate productivity. Most control strategies developed for microalgae production systems found in the literature aim at controlling the pH in the bioreactor by injecting CO, while few other papers consider manipulating the dissolved oxygen. The need for higher-level control arises to not only track pH or DO references but also to maximize the treatment efficiency of the bioreactor.
微藻生物质是应对气候变化的一种有前景的资源，并且在生物燃料生产的能源转型中发挥作用。由于微藻每年能够产生更高的产量，从微藻中获得的生物燃料被视为第三代先进生物燃料。微藻的工业化生产减轻了二氧化碳排放的影响，并且可用于废水生物修复，因为大多数废水富含营养物质。将废水用作微藻的生长介质促进了循环经济和营养物质回收的原则。水产养殖废水含有高水平的含氮化合物以及磷酸盐和溶解有机碳。本综述旨在识别、集中并提供有关水产养殖废水中不同微藻物种生长过程中涉及的决定性技术和工艺因素的广泛信息。该研究关注技术生长性能指标以及为实现pH控制而应用的特定控制策略，因为pH已被强调为最重要的与生长相关的辅助因素之一。开发了一个文献计量框架来识别微藻综合生产的未来趋势。科学文献分析突出了水产养殖废水作为微藻生物质生产生长介质的巨大潜力，这归因于其在脂质和碳水化合物生产率方面的卓越表现。文献中发现的大多数针对微藻生产系统开发的控制策略旨在通过注入二氧化碳来控制生物反应器中的pH，而其他少数论文考虑操纵溶解氧。需要更高层次的控制，不仅要跟踪pH或溶解氧参考值，还要最大化生物反应器的处理效率。
