Past Research Projects Optimizing Subsurface Transport of Reactive Nanoparticles Red Mud Neutralization/Treatment Using Fly Ash and CO2 Developing Reactive Metallic Nanoparticles for DNAPL Degradation Sequestering CO2 from Air as Metal Carbonates and Geochemical CO2 Sequestration Using Industrial Wastes In Situ Sediment Remediation using “active” Sediment Capping Catalytic Destruction of Chlorinated Organics