• Bio-contaminants
• Bio-particles
• Space life-support system
• Space systems

This thesis provides an overview of life-support systems, focusing on their key subsystems and applications in space environments. Life-support technologies are essential for sustaining human life in extreme conditions, including space missions, by ensuring the regeneration of critical resources. The life-support system components can be clissified into internal subsystems—such as air, water, waste, food, and thermal control—and external interfaces, including crew accommodations, power, radiation protection, and integrated control.

A particular focus is given to air decontamination systems, which play a crucial role in maintaining air quality by removing contaminants, pathogens, and pollutants. Various decontamination technologies, including HEPA filtration, UV disinfection, electrostatic precipitators, and photocatalytic oxidation, are discussed.

The Environmental Control and Life Support System (ECLSS) on the International Space Station (ISS) is examined as a case study, highlighting its use of passive and active air purification methods.

The thesis aims to set the foundation for the subsequent research by identifying key challenges and technological gaps in the development of advanced life-support systems for long-duration space missions.