1. Department of Chemical Engineering, Loughborough University, Ashby Road, Loughborough, Leicestershire, LE11 3TU, England, Department of Chemical Engineering, University of Waterloo, 200 University Avenue West, Waterloo, Ontario, Canada N2L 3 G1, and Mechanical & Industrial Engineering Department, Sultan Qaboos University, P.O. Box 33, Al Khod, P.C. 123, Muscat, Sultanate of Oman