NORITAKE CO., LIMITED (Headquarters: Nagoya, Aichi; Representative Director and President: Akira Higashiyama) has developed a new PFAS removal system that uses fine bubbles^*1, enabling the removal of more than 99% of PFAS^*2 from liquids. The system also helps significantly reduce CO₂ emissions generated during the thermal decomposition process following PFAS removal.

PFAS are chemicals known for their excellent heat resistance, water and oil repellency, and chemical stability. They have been widely used in applications such as food packaging, cookware, and firefighting foams. Among them, PFOS^*3 and PFOA^*4 are representative substances that have been extensively utilized. However, since they hardly degrade in nature and persist for long periods, concerns have been raised about their impact on human health and ecosystems.

Adsorption using activated carbon is a widely used method for removing PFAS (PFOS, PFOA). Under this method, the activated carbon must be incinerated after adsorption to thermally decompose PFAS, making the carbon non-reusable. Since activated carbon is carbon-based, the incineration process results in substantial CO₂ emissions. Consequently, development of technologies that reduce the amount of activated carbon incinerated is also underway.

③Reusable Components
Both the fine-bubble generator and ceramic filter use ceramic materials which are regenerable ceramic materials, enabling repeated use and lowering long-term running costs.

*1　Fine bubbles: Bubbles with a diameter of less than 100 μm.
*2　PFAS: Per- and polyfluoroalkyl substances, consisting primarily of carbon and fluorine.
*3　PFOS: Perfluorooctane sulfonic acid.
*4　PFOA: Perfluorooctanoic acid.