1. NRF/DST Chair: Sustainable Process Engineering, School of Chemical and Metallurgical Engineering, University of the Witwatersrand , Private Bag 3, WITS, 2050 Johannesburg, South Africa
2. Bioenvironmental Engineering Research Centre (BERC), Department of Biotechnology Engineering, Kulliyyah of Engineering, International Islamic University Malaysia , P.O. Box 10, 50728 Kuala Lumpur, Malaysia
3. PETRONAS Chemical Fertilizer Sabah Sdn Bhd , Sipitang, Sabah, Malaysia
4. Department of Chemical and Petroleum Engineering, University of Lagos , Akoka—Yaba, Lagos, Nigeria