1. Department of Chemical Engineering, P.O. Box 36, Monash University, Victoria 3800, Australia; Department of Biological Systems Engineering, Washington State University, Pullman, Washington 99164; Department of Chemical Engineering, GPO Box U1987, Curtin University of Technology, Western Australia 6845, Australia; and Department of Chemical Engineering, Taiyuan University of Technology, Taiyuan, Shanxi 030024, People's Republic of China