1. Faculty of Chemical Engineering, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia, Department of Chemical and Process Engineering, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia, and Institute of Particle Science and Engineering, School of Process, Environment and Material Engineering, University of Leeds, Leeds, LS2 9JT, United Kingdom