Institution: | 1.Department of Environmental Engineering, Faculty of Engineering, Andalas University, Kampus Limau Manis, Padang, Indonesia ;2.Department of Life and Environment Engineering, Faculty of Environmental Engineering, The University of Kitakyushu, 1-1, Hibikino, Wakamatsu-ku, Kitakyushu, Fukuoka, 808-0135, Japan ; |