Our research focuses on multiple aspects of  diatom-based applications, including the isolation and growth optimization of diatoms to improve cultivation efficiency. It also emphasizes the analysis of high-value products and metabolites derived from these organisms. Another key area is bioremediation and wastewater management using microalgae for environmental sustainability. The research further explores the green synthesis of nanoparticles and their therapeutic applications, as well as the development of advanced drug delivery systems. Additional focus areas include aquaculture feed development and the formulation of slow-release biofertilizers to support sustainable agriculture and aquaculture. Finally, the work also addresses concepts related to the circular economy by promoting resource recovery, sustainable material utilization, and environmentally responsible biotechnological processes.