1. Faculty of Chemical & Energy Engineering , Universiti Teknologi Malaysia , Skudai 81310 , Malaysia
2. Department of Chemical and Environmental Engineering, Malaysia-Japan International Institute of Technology (MJIIT) , Universiti Teknologi Malaysia , Jalan Sultan Yahya Petra , 54100 Kuala Lumpur , Malaysia
3. Department of Chemical Engineering and Sustainability, Kulliyyah of Engineering , International Islamic University of Malaysia , P.O. Box 10 , 50728 Kuala Lumpur , Malaysia