한국응용과학기술학회지 (Journal of the Korean Applied Science and Technology)

  • 제30권1호
  • /
  • Pages.166-172
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  • 2013
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  • 1225-9098(pISSN)
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  • 2288-1069(eISSN)
한국응용과학기술학회 (The Korean Society of Applied Science and Technology)
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Cu-Zn 금속 합금의 산화.환원 반응에 의한 난분해성 COD처리에 관한 연구

A Study on the Treatment of Refractory Organics by Redox Reaction of Cu-Zn Metal Alloy

  • 송주영 (창원대학교 화공시스템공학과) ;
  • 박지원 (창원대학교 화공시스템공학과) ;
  • 김종화 (창원대학교 화공시스템공학과)
  • Song, Ju-Yeong (Department of Chemical Engineering, Changwon National University) ;
  • Park, Ji-Won (Department of Chemical Engineering, Changwon National University) ;
  • Kim, Jong-Hwa (Department of Chemical Engineering, Changwon National University)
  • 투고 : 2013.01.08
  • 심사 : 2013.03.25
  • 발행 : 2013.03.30
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초록

본 연구는 압연공정에서 발생하는 폐수 중에 함유되어있는 난분해성 COD 물질을 $80{\mu}m$ 두께의 극세사 형태로 제조된 Cu-Zn 금속합금의 산화 작용으로 인하여 발생하는 OH 라디칼을 이용하여 처리하는 방법에 관한 기초 연구이다. OH 라디칼은 유기화합물(RH) 속에 포함된 수소를 수소추출반응(H Abstraction) 또는 탄소와 탄소(C-C)의 불포화 결합에 첨가됨으로써 빠르고 비 선택적인 반응을 수행하는 것으로 알려진 것처럼 난 분해성 유기화합물의 처리에 효과적인 것으로 나타났다. 금속합금 반응 물질은 극세사 형태로 표면적이 넓어서 1회 처리만으로도 수용액의 pH를 평형에 도달하게 하여서 반응 효율성이 높은 것으로 나타났다. COD처리 효율은 중성 pH에 가까운 pH 7, pH 6에서 최고치를 보였으며 산성분위기인 pH 5이하 및 알칼리성 분위기인 pH 8이상에서는 낮은 효율을 보였다. 실제 압연 폐수의 응집 침전을 이용한 COD 처리에서도 redox 반응장치의 유무에 따라 2배 이상의 처리효율의 차이를 보였다.

The purpose of this study is to evaluate the treatment ability of refractory organics in hot rolling precess waste water by redox(reduction and oxidation) reaction. Metal is oxidized in an aqueous solution to generate electron which can reduce water to generate hydroxy radical. These hydroxy radical is very effective to conduct hydrogen abstraction reaction and addition reaction to the carbon - carbon unsaturated link. The surface area of metal alloy reaction material is more than enough to get equilibrium at a single treatment. The efficiency of COD treatment by redox reaction showed maximum at mild pH of pH 7 and pH 6. But it was not effective in acidic atmosphere of pH 3, 4, 5 and basic atmosphere of pH 8 or over. Redox reaction system in much more helpful in a commercial coagulation sedimentation treatment than exclusive system.

키워드

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피인용 문헌

  1. Cu-Zn 금속합금의 산화 환원 반응을 이용한 수중 탈인처리에 관한 연구 vol.32, pp.1, 2013, https://doi.org/10.12925/jkocs.2015.32.1.78
  2. Cu-Zn 금속합금의 산화 환원반응과 Al-Silicate의 흡착반응을 이용한 폐수 중 중금속처리에 관한 연구 vol.33, pp.3, 2013, https://doi.org/10.12925/jkocs.2016.33.3.441