Nanotechnology Applications for Clean Water

Chapter 21 Enhanced Dechlorination of Trichloroethylene by Membrane-Supported Iron and Bimetallic Nanoparticles

S.M.C. Ritchie

Department of Chemical & Biological Engineering, University of Alabama, Tuscaloosa, AL, USA

1. Introduction 294

2. Nanoparticle Formation 295

   1. Solution and Emulsion Techniques 295

   2. In Situ Formation of Nanoparticles 296

   3. Addition of Secondary Metals 297

   4. Preserving Zero-Valence 297

3. Polymers 298

4. Composite Material 300

5. Water Treatment 300

   1. Metal Particle Composition 302

   2. Absorption in Support Polymer 306

6. Conclusion 308

Abstract

Zero-valent iron and bimetallic nanoparticles are very effective for the dechlorination of organies (e.g., trichloroethylene, TCE), but are prone to oxidation when ...