1. Research Associate, Dept. of Chemical and Biochemical Engineering, The Univ. of Western Ontario, London, ON, Canada N6A 5B9 (corresponding author).
2. Professor and Canada Research Chair in Powder Technology Applications, Dept. of Chemical and Biochemical Engineering, The Univ. of Western Ontario, London, ON, Canada N6A 5B9.
3. Professor and Salamander Chair in Environmental Engineering, Dept. of Chemical and Biochemical Engineering, The Univ. of Western Ontario, London, ON, Canada N6A 5B9.