1. Centre of Excellence Geopolymer and Green Technology, Universiti Malaysia Perlis (UniMAP), Taman Muhibah, Jejawi, Arau 02600, Perlis, Malaysia
2. Faculty of Chemical Engineering and Technology, Universiti Malaysia Perlis (UniMAP), Arau 02600, Perlis, Malaysia
3. School of Microelectronic Engineering, Pauh Putra Campus, Universiti Malaysia Perlis (UniMAP), Arau 02600, Perlis, Malaysia
4. Faculty of Materials Science and Engineering, Gheorghe Asachi Technical University of lasi, Blvd. D. Mangeron 71, 700050 Iasi, Romania
5. Romanian Inventors Forum, Str. Sf. P. Movila 3, 700089 Iasi, Romania
6. National Institute for Research and Development in Environmental Protection INCDPM, Splaiul Independentei 294, 060031 Bucharest, Romania
7. Technical Sciences Academy of Romania, Dacia Blvd 26, 030167 Bucharest, Romania