1. Institute of Chemical Technology, Faculty of Chemistry, University of Stuttgart, Stuttgart, Germany
2. , South Ural State University, Chelyabinsk, Russia
3. Petroleum and Chemical Engineering, Faculty of Engineering, Universiti Teknologi Brunei, Gadong, Brunei Darussalam
4. School of Food and Biological Engineering, Jiangsu University, Zhenjiang, Jiangsu, China
5. Civil Engineering, Faculty of Engineering, Universiti Teknologi Brunei, Gadong, Brunei, Darussalam