In recent years, with growing global attention on water pollution caused by PFAS (Perfluoroalkyl and Polyfluoroalkyl Substances) and other persistent organic pollutants, the safe disposal of these highly stable compounds has become a key issue in the environmental field. Recent environmental pilot studies in Japan have shown that photolysis technology based on 172nm excimer light is emerging as a potential breakthrough for PFAS degradation, providing a new direction for water treatment.

PFAS: The “Forever Chemicals” Resistant to Degradation

PFAS (Perfluoroalkyl and Polyfluoroalkyl Substances) are synthetic organic compounds characterized by exceptional chemical and thermal stability as well as hydrophobicity. These properties have led to their widespread use in both industrial applications and consumer products. However, due to their persistence in the environment, PFAS are often referred to as “forever chemicals.” They also possess bioaccumulative properties and potential toxicity.

Principle of 172nm Excimer Photolysis Technology

The core principle of PFAS degradation using 172nm excimer light involves first extracting and concentrating PFAS from water through specific extraction and concentration processes. The concentrated PFAS are then decomposed under high-energy ultraviolet light emitted by a 172nm excimer lamp, in synergy with hydroxyl radicals (·OH), water molecules, and electrons.

Studies have shown that even at mg/L concentrations, PFAS compounds such as PFOA (Perfluorooctanoic Acid) and PFOS (Perfluorooctane Sulfonate) can achieve about 99% degradation efficiency after a certain reaction time.

GMY: Advancing Lighting Technology Applications

GMY focuses on the research, development, and customization of 172nm excimer light applications, covering areas such as photocleaning, photocuring, photomodification, TOC degradation in ultrapure water treatment, and other water treatment applications. The company is committed to promoting technological innovation and high-quality development in scientific research, environmental protection, and high-end manufacturing.

Looking ahead, GMY aims to work with more partners to explore the broader possibilities of 172nm excimer light applications.