MSE Seminar Series: Spiro Alexandratos
Friday, September 16, 2016
Room 2108, Chemical and Nuclear Engineering Building
Polymer & Environmental Chemistry
Hunter College, CUNY
Immobilized Ligands: Fundamental studies & application to environmental remediation
Ion-exchange resins and ion-selective polymers are developed by immobilizing ligands onto cross-linked polymer supports. Selectivity is key to their applicability in environmental remediation and the basic question is: How does a ligand bind a targeted metal ion from a multi-component aqueous solution? In other words, what determines metal ion recognition? This question has wide applicability to water / wastewater treatment (softening, polishing, remediation), hydrometallurgy, the nuclear fuel cycle, chromatography, and sensors.
This presentation defines the variables in metal ion complexation reactions by ligands as we build toward the rational design of ion-selective polymers. Application of those variables in our laboratory to environmental issues is described and this has led to a number of ion-selective polymers, three of which have been commercialized.