1. Physics and Chemistry of Supercritical Water Igor Svishchev Physical Environmental Chemistry Trent University Supercritical Water Oxidation Technology Thermophysical Properties Molecular Simulations Molecular Simulations IAPWS-CNC, Toronto 2005

2. Supercritical Water Oxidation Studies IAPWS-CNC, Toronto 2005 Oxidation chemistry Process efficiency Corrosion Environmental impact SCWO Flow Reactor Analytical Tools GC-MS and HPLC UV-VIS Atom absorption (AA) Solid phase extraction

3. Supercritical Water Oxidation of Hazardous Materials IAPWS-CNC, Toronto 2005 % of eliminated waste Target waste - dichlorobenzene Oxidant - hydrogen peroxide Process pressure ~ 450 bar Reaction time ~ 20 sec. SCWO Process Efficiency

4. Oxidation Reaction Kinetics Oxidation Reaction Kinetics IAPWS-CNC, Toronto 2005 Experiments - Flash-photolysis studies Calculations - Molecular Dynamics simulations SCWO region C 6 H 5 OH + OH -> Products k - reaction rate constant Supercritical Water Oxidation of Phenol

5. Corrosion of SCWO Reactor Material Metals in SCWO effluent (dichlorobenzene treatment) Severe corrosion in high- temperature oxygenated water De-alloying of metals (Cr) from reactor material (stainless steel) Lesser corrosion in supercritical water due to lower density and ionic concentration IAPWS-CNC, Toronto 2005

6. Meeting Needs of the Industry Utilization of chemical wastes by the SCWO Water quality testing Corrosion studies High-temperature properties of fluids IAPWS-CNC, Toronto 2005