The purpose of this study is to degradation of Rhodamine B (RhB, dye) and N, N-Dimethyl-4-nitrosoaniline (RNO, indicator of the electro-generation of OH radical) in solution using boron doped diamond (BDD) electrode. The effects of applied current (0.2~1.0 A), electrolyte type (NaCl, KCl, and Na2SO4) and electrolyte concentration (0.5~3.0 g/L), solution pH (3~11) and air flow rate (0~4 L/min) were evaluated. Experimental results showed that RhB and RNO removal tendencies appeared with the almost similar thing, except of current. Optimum current for RhB degradation was 0.6 A, however, RNO degradations was increased with increase of applied current. The RhB and RNO degradation of Cl type electrolyte were higher than that of the sulfate type. The RhB and RNO degradation were increased with increase of NaCl concentration and optimum NaCl dosage was 2.5 g/L. The RhB and RNO concentrations were not influenced by pH under pH 7. Optimum air flow rate for the oxidants generation and RhB and RNO degradation were 2 L/min. Initial removal rate of electrolysis process was expressed Langmuir - Hinshelwood equation, which is used to express the initial removal rate of UV/TiO2 process.

Abstract
 1. 서 론
 2. 재료 및 방법
  2.1. 실험재료
  2.2. 분석 및 측정
 3. 결과 및 고찰
  3.1. RhB와 RNO 분해에 미치는 전류의 영향
  3.2. RhB와 RNO 분해에 미치는 전해질 종류의 영향
  3.3. RhB와 RNO 분해에 미치는 NaCl 농도의 영향
  3.4. RhB와 RNO 분해에 미치는 pH의 영향
  3.5. RhB와 RNO 분해에 미치는 공기 유량의 영향
  3.6. RhB 분해에 미치는 RhB 초기 농도의 영향
 4. 결 론
 참 고 문 헌

• 박영식(대구대학교 보건과학부) | Young-Seek Park (Division of Health Science, Daegu University)
• 김동석(대구가톨릭대학교 환경과학과) | Dong-Seog Kim (Department of Environmental Science, Catholic University of Daegu) Corresponding Author