Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
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A Study on the Degradation Properties of MTBE in Solution using Ultrasound

초음파를 이용한 수용액 속의 MTBE 분해 특성 연구

  • Kim, Heeseok (Department of Civil Engineering and Environmental Sciences, Korea Military Academy) ;
  • Yang, Inho (Department of Civil Engineering and Environmental Sciences, Korea Military Academy) ;
  • Oh, Jeill (Department of Civil and Environmental Engineering, Chung-Ang University) ;
  • Her, Nam Guk (Department of Chemistry and Environmental Sciences, Korea Army Academy at Young-Cheon) ;
  • Jeong, Sangjo (Department of Civil Engineering and Environmental Sciences, Korea Military Academy)
  • 김희석 (육군사관학교 토목환경학과) ;
  • 양인호 (육군사관학교 토목환경학과) ;
  • 오재일 (중앙대학교 건설환경공학과) ;
  • 허남국 (육군3사관학교 화학환경학과) ;
  • 정상조 (육군사관학교 토목환경학과)
  • Received : 2009.01.21
  • Accepted : 2009.05.28
  • Published : 2009.07.30
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Abstract

To supply safe drinking water to areas lacking in water supply and drainage system, such as rural area and military bases in proximity to Demilitarized Zone, effective method for treating organic contaminants such as MTBE is required. This study focuses on seeking optimal conditions for effective degradation of MTBE using a bath type ultrasound reactor. Effectiveness of MTBE degradation by ultrasound is dependent on the frequency, power, temperature, treatment volume, initial concentration, catalyst, etc. In this study the degradation rate of MTBE by ultrasound was proportional to power/unit volume ratio and removal is relatively more efficient for 0.1 mM than for 1 mM of MTBE solution. Efficiency of ultrasound treatment for 1 mM MTBE solution was enhanced under bath temperature of $30^{\circ}C$ compared to $4^{\circ}C$, but the temperature effect was negligible for 0.1 mM MTBE solution. Also for 0.1 mM MTBE solution, effect of catalyst such as $TiO_2$ and $Fe^0$ on treatment speed was negligible, and zeolite even increases the time taken for the degradation. Under these specific experimental conditions of this study, the most determinant factor for degradation rate of MTBE in solution was frequency and power of ultrasound. The results have shown that a continuous ultrasound reactor system can be used for small scale remediation of organically polluted groundwater, under optimal conditions.

Keywords

Acknowledgement

Supported by : 환경부

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