대한환경공학회지 (Journal of Korean Society of Environmental Engineers)

  • 제38권11호
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  • Pages.627-634
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  • 2016
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  • 1225-5025(pISSN)
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  • 2383-7810(eISSN)
대한환경공학회 (Korean Society of Environmental Engineers)
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산업도금폐수 처리에 사용된 탄소폼 흡착소재의 중금속 탈착 및 회수에 관한 연구

Study on Heavy Metal Desorption and Recovery of the Carbon Foam used in Industrial Plating Wastewater Treatment as Adsorbent

  • 이다영 (한국과학기술연구원 물자원순환연구단) ;
  • 이창구 (한국과학기술연구원 물자원순환연구단) ;
  • 김대운 (한국스미더스오아시스 기술연구소) ;
  • 박상현 (한국스미더스오아시스 기술연구소) ;
  • 권지향 (건국대학교 환경공학과) ;
  • 이상협 (한국과학기술연구원 물자원순환연구단)
  • Lee, Da-Young (Center for Water Resource Cycle Research, Korea Institute of Science and Technology) ;
  • Lee, Chang-Gu (Center for Water Resource Cycle Research, Korea Institute of Science and Technology) ;
  • Kim, Dae-Woon (R&D Center, Smithers-Oasis Korea) ;
  • Park, Sang-Hyen (R&D Center, Smithers-Oasis Korea) ;
  • Kweon, Ji-Hyang (Department of Environmental Engineering, Konkuk University) ;
  • Lee, Sang-Hyup (Center for Water Resource Cycle Research, Korea Institute of Science and Technology)
  • 투고 : 2016.09.22
  • 심사 : 2016.11.30
  • 발행 : 2016.11.30
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초록

본 연구에서는 탄소폼 흡착소재를 이용하여 산업도금폐수로부터 중금속을 흡착 제거한 후 탈착용액을 이용하여 제거된 중금속을 용출하고 회수하는 과정의 특성을 평가해 보고자 하였다. 용액의 조성에 따른 복합 중금속의 탈착 특성을 살펴본 결과 증류수 조건에서는 용출이 관측되지 않았으며, 탈착용액으로 HCl과 $H_2SO_4 $를 이용한 경우 높은 중금속 농도를 나타내었다. 탈착 용액을 이용함과 더불어 물리적 기술인 초음파 처리를 이용한 경우 중금속의 용출이 증진되는 것을 확인하였으며, 초음파 장치의 출력이 높고 반응 시간이 길수록 효율도 증가하는 것으로 나타났다. 탄소폼 흡착소재를 구리도금 세척수 처리에 적용시켜본 결과 200 반응기부피(Bed volume) 동안 안정적인 제거 성능을 나타내었으며, 흡착된 구리는 탈착용액을 이용하여 용출시킨 후 직류 전원 장치를 이용하여 회수할 수 있었다. 또한 구리가 회수된 탈착용액은 재이용 효율은 84.2%로 나타났다.

We investigated the characteristics of heavy metal desorption and recovery from carbon foam after plating wastewater treatment. The heavy metal desorption depends on solution chemistry because desorption occurred in HCl and $H_2SO_4 $ solution but did not occur in distilled water. Heavy metal desorption efficiency was increased using ultrasonication with desorption solution. The higher ultrasonic power and the longer reaction time improve efficiency. The copper plating rinse solution was treated reliably by carbon foam adsorbent during 200 bed volume. The adsorbed copper was dissolved using desorption solution and recovered by DC power supply. After copper recovery, the reuse efficiency of desorption solution was 84.2%.

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