1. School of Mechanical Engineering, Faculty of Engineering , Universiti Teknologi Malaysia , 81310 Skudai, Johor , Malaysia
2. UTM Centre for Low Carbon Transport in cooperation with Imperial College London, Institute for Vehicle Systems and Engineering , Universiti Teknologi Malaysia , 81310 Skudai, Johor , Malaysia
3. Advanced Membrane Technology Research Centre (AMTEC) , Universiti Teknologi Malaysia , 81310 Skudai, Johor , Malaysia