Journal of the Korea Organic Resources Recycling Association (유기물자원화)

Korea Organic Resources Recycling Association (유기성자원학회)
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Adsorption of Cesium from an Aqueous Solution Using Activated Carbon Impregnated with triethylenediamine (TEDA)

Triethylenediamine (TEDA)로 첨착된 활성탄소를 이용한 수용액에서 세슘의 흡착

  • Jong-Soo Choi (Department of Biological and Environmental Engineering, Semyung University) ;
  • Suk Soon Choi (Department of Biological and Environmental Engineering, Semyung University) ;
  • Choong Jeon (Department of Biochemical Engineering, Gangneung-Wonju National University) ;
  • Tae-Young Jeong (Division of Environmental and Energy Engineering, Yonsei University) ;
  • Jeong Hyub Ha (Department of Integrated Environmental Systems, Pyeongtaek University) ;
  • Jae-Hoon Lee (ENVIONEER Co. Ltd.)
  • 최종수 (세명대학교 바이오환경공학과) ;
  • 최석순 (세명대학교 바이오환경공학과 ) ;
  • 전충 (강릉원주대학교 생명화학공학과) ;
  • 정태영 (연세대학교 환경에너지공학부 ) ;
  • 하정협 (평택대학교 환경융합시스템학과) ;
  • 이재훈 ((주)엔바이오니아 )
  • Received : 2023.08.28
  • Accepted : 2023.09.04
  • Published : 2023.09.30
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Abstract

Cesium discharged from nuclear power plants requires technology for safely treating, due to its harmfulness to the human body. In this work, activated carbon impregnated with triethylenediamine (TEDA) process was applied to effectively remove cesium dissolved in aqueous solution. The surfaces on the activated carbon were chemically modified with various TEDA concentrations (2.5, 5.0, 7.5, 10.0, and 12.5%) and the optimal TEDA concentration was obtained to be 5.0% by the assessment for cesium removal efficiency. In addition, when 5.0% TEDA-impregnated activated carbon was used to treat 5.0 and 10.0 mg/L of cesium, the removal efficiency was 71.5% and 61.1%, respectively. Also, it was found to be the chemical adsorption from the adsorption kinetics experiment by temperature change. A novel remediation technology developed in this study could be practically employed for removing cesium contained in surface and ground water.

원자력 발전소에서 유출되는 세슘은 인체의 유해성으로 인하여, 이를 안전하게 처리하는 기술이 요구되고 있다. 본 연구에서는 수용액에 용해된 세슘을 효율적으로 제거하고자, triethylenediamine (TEDA) 첨착 공정을 활성탄소에 적용하였다. 이 실험에서는 활성탄소 표면을 다양한 TEDA(2.5, 5.0, 7.5, 10.0, 12.5%) 농도로 화학적 개질을 하였으며, 세슘 제거효율 평가에 의하여 최적의 TEDA 농도가 5.0%임을 구할 수 있었다. 또한, 5.0% TEDA로 첨착된 활성탄을 사용하여 5.0과 10.0 mg/L의 세슘을 처리하였을 때, 제거효율은 각각 71.5%와 61.1%를 나타내었다. 그리고 온도 변화에 의한 흡착동력학 실험으로부터, 화학적 흡착이 이루어짐을 알 수 있었다. 이 연구를 통하여 얻어진 새로운 복원 기술은 지표수와 지하수에 함유된 세슘을 실용적으로 제거하는데 사용될 수 있을 것이다.

Keywords

Acknowledgement

이 연구는 산업통상자원부 및 한국산업기술평가관리원(KEIT) 연구비 지원에 의한 연구(20012763) 및 환경부가 지원한 녹색혁신기업 성장지원 프로그램으로 지원을 받아 수행된 연구결과입니다(2021003160013).

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