[1] Department of Applied Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
[2] Waste Treatment Facility, Nagoya University, Furo-co, Chikusa-ku, Nagoya 464-8603, Japan
[3] College of Education, University of the Ryukyus, Azasenbaru, Nishihara-cho, Okinawa 903-0213, Japan