1. Department of Chemical Processes and Environments, Faculty of Environmental Engineering, The University of Kitakyushu, 1-1 Hibikino Wakamatsu-ku, Kitakyushu, Fukuoka 808-0135, Japan, and Department of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University,744 Motooka Nishi-ku, Fukuoka, Fukuoka 819-0395, Japan