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Degradation of Cochlodinium polykrikoides Using Photocatalytic Reactor with $TiO_2$-coated Alumina

Shin, Hyun-Jae    (Department of Chemical and Biochemical Engineering, Chosun University   ); Kim, Byung-Hoon    (Department of Dental Materials, College of Dentistry, Chosun University   ); Seo, Hyun-Suk    (Department of Dental Materials, College of Dentistry, Chosun University   ); Kim, Chun-Sung    (Department of Oral Biochemistry, College of Dentistry, Chosun University   ); Kook, Joong-Ki    (Department of Oral Biochemistry, College of Dentistry, Chosun University   ); Lim, Gyeong-Taek    (Research Institute for Catalyst, Chonnam National University   ); Cho, Dong-Lyun    (Center for Functional Nano Chemicals, Chonnam National University   ); Kim, Do-Man    (School of Biological Science and Technology, Chonnam National University   ); Ohk, Seung-Ho    (Department of Oral Microbiology for dental school, Chonnam National University   ); Ko, Yeong-Mu    (Department of Dental Materials, College of Dentistry, Chosun University  );
  • 초록

    Cochlodinium polykrkoides(C. polykrikoides) is one of the most harmful red tide dinoflagellates due to its great economic damage and compromising recreational opportunity and public health. Titanium dioxide ( $TiO_2$ ) is known to be used as a photocatalyst for the control of the aquatic invasive algae under natural and artificial light. The purpose of this study was to design a highly efficient continuous photocatalytic reactor with $TiO_2$ -coated alumina for the demonstrated efficient degradation of C. polykrikoides. $TiO_2$ photocatalyst beads were prepared by sol-gel dip-coating method using titanium tetra iso-propoxide on alumina. After 40 min of ultraviolet illumination time, the reduction of C. polykrikoides cell number was more than 80%. The degree of degradation of C. polykrikoides increased in a time-dependent manner in this novel reactor. The degradation begins with photocatalytic action by the oxidative species of $TiO_2$ on the protective cell structures of C. polykrikoides.

  • 주제어

    $TiO_2$ .   photocatalysis .   Cochlodinium polykrikoides .   water quality .   UV.  

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