Shigeo Iiri

Title: Innovator in Environmental Solutions: Shigeo Iiri

Introduction: Shigeo Iiri, an accomplished inventor based in Kawasaki, Japan, has made significant contributions to the field of environmental technology. With two patents to his name, Iiri is recognized for his innovative approaches to processing waste liquids that contain organic quaternary ammonium hydroxides.

Latest Patents: Iiri’s latest invention focuses on a method for processing waste liquids laden with organic quaternary ammonium hydroxides. This unique method entails bringing the waste liquid into contact with a cation-exchanging material, allowing the absorption of organic quaternary ammonium ions from the liquid. This process results in cleaner processed water—reducing chemical oxygen demand (COD)—which can be safely discharged into natural water bodies. Furthermore, it enables the recovery of valuable substances for high-purity applications through an elution step followed by electrolyzing the eluate. This efficient and cost-effective method not only purifies waste but also supports sustainability efforts.

Career Highlights: Iiri’s career is marked by his dedication to advancing environmental processing technologies. As a key inventor at Tama Chemicals Co., Ltd., he continues to work towards innovative solutions that address waste management and environmental protection challenges.

Collaborations: Throughout his career, Iiri has collaborated with notable colleagues including Shumpei Shimizu and Toshitsura Cho. These partnerships have enriched his innovative endeavors, combining expertise and resources to enhance the development of his inventions.

Conclusion: Shigeo Iiri exemplifies the role of an inventor committed to sustainable environmental practices. His patents reflect a clear vision towards creating efficient processes for waste liquid management, contributing significantly to both scientific and ecological advancements.