Pollution prevention via recovery of cerium (IV) oxide in optics company

Case Studies in Chemical and Environmental Engineering

William Gallagher¹  Zachary Hobbs²  Eugene Park²  Mark Mayton³ 

[1] Corresponding author.;New York State Pollution Prevention Institute, Rochester Institute of Technology, 111 Lomb Memorial Dr, Rochester, NY, 14623, USA;Stefan Sydor Optics, 31 Jetview Dr, Rochester, NY, 14624, USA;

关键词: Lens polishing;    Centrifugation;    Microfiltration;    Ceria recovery;   

DOI  :  

来源: DOAJ

【 摘 要 】

Pollution prevention methods were applied at an optics manufacturer in an effort to improve recovery of a valuable polishing component, cerium oxide (ceria), 77% of which was lost to dragout and sewer discharge. Centrifugation and microfiltratiion were evaluated to develop a process that would increase recovery of used ceria, which would then be sent back to the ceria supplier for reclamation and reuse. Full-scale implementation included a high-speed centrifuge that operates continuously with a microfiltration system through recirculation in a single process tank. Sydor Optics has improved ceria recovery from 23% to 48%, saving thousands of dollars annually.

【 授权许可】

Unknown