DOI QR코드

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BDD 전극을 이용한 OH 라디칼 생성과 염료 분해에 미치는 운전인자의 영향

박영식;김동석
Park, Young-Seek;Kim, Dong-Seog

  • 투고 : 2010.06.21
  • 심사 : 2010.08.12
  • 발행 : 2010.09.30

초록

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 $Na_2SO_4$) 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/$TiO_$2 process.

키워드

Boron doped diamond electrode;Hydroxyl radical;Dye oxidation;Current;Electrolyte

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피인용 문헌

  1. Removal of Rhodamine B Dye Using a Water Plasma Process vol.37, pp.3, 2011, https://doi.org/10.5322/JES.2010.19.9.1143
  2. A Study on the Microorganism Disinfection and Characteristics of Discharged Water of Dielectric Barrier Discharge Plasma Systems vol.38, pp.2, 2012, https://doi.org/10.5322/JES.2010.19.9.1143
  3. Electrochemical Degradation of Phenol Using Dimensionally Stable Anode vol.22, pp.8, 2013, https://doi.org/10.5322/JES.2010.19.9.1143
  4. Optimization of Gas Mixing-circulation Plasma Process using Design of Experiments vol.23, pp.3, 2014, https://doi.org/10.5322/JES.2010.19.9.1143
  5. Degradation of Rhodamine B in Water using Solid Polymer Electrolyte (SPE) in the Electrolysis Process vol.40, pp.2, 2014, https://doi.org/10.5322/JES.2010.19.9.1143