1. Group Research & Technology, PETRONAS, Kawasan Institusi Bangi, Kajang, Selangor 43000, Malaysia
2. CO2RES, Institute of Contaminant Management (ICM), Universiti Teknologi PETRONAS, Bandar Seri Iskandar, 32610 Perak, Malaysia
3. Chemical Engineering Department, Universiti Teknologi PETRONAS, Bandar Seri Iskandar, 32610 Perak, Malaysia