1. Chemical Engineering Department Universiti Teknologi PETRONAS 32610 Bandar Seri Iskandar Perak Darul Ridzuan Malaysia
2. HICoE Centre for Biofuel and Biochemical Research (CBBR) Institute of Self-Sustainable Building, Universiti Teknologi PETRONAS 32610 Seri Iskandar Perak Malaysia
3. Department of Chemical and Environmental Engineering Malaysia Japan International Institute of Technology, Universiti Teknologi Kuala Lumpur 54100 Malaysia