1. Universiti Malaysia Perlis (UniMAP), Center of Excellence Geopolymer & Green Technology (CeGeoGTech), 02600, Arau, Perlis, Malaysia
2. Universiti Malaysia Perlis (UniMAP), Faculty of Mechanical Engineering Technology, 02600, Arau, Perlis, Malaysia
3. Universiti Malaysia Perlis (UniMAP), Faculty of Chemical Engineering Technology, Taman Muhibbah, Jejawi, 02600 Arau, Perlis, Malaysia
4. Universiti Tun Hussein Onn, Faculty of Engineering Technology, Pagoh, Johor, Malaysia