Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
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Removal Mechanisms of BTEX Compounds by RO/NF Membrane Processes

RO/NF막 공정을 이용한 BTEX 물질의 제어 특성 평가

  • Jang, Hyuewon (Hazardous Substances Research Center, Korea Institute of Science and Technology) ;
  • Park, Chanhyuk (Water Environment and Remediation Research Center, Korea Institute of Science and Technology) ;
  • Hong, Seungkwan (Department of Civil and Environmental Engineering, Korea University) ;
  • Yoon, Yeomin (CH2M HILL KOREA) ;
  • Jung, Jin-Young (Hazardous Substances Research Center, Korea Institute of Science and Technology) ;
  • Chung, Yun-Chul (Hazardous Substances Research Center, Korea Institute of Science and Technology)
  • 장혜원 (한국과학기술연구원 유해물질연구센터) ;
  • 박찬혁 (한국과학기술원 수질환경 및 복원연구센터) ;
  • 홍승관 (고려대학교 공과대학 사회환경시스템공학과) ;
  • 윤여민 ;
  • 정진영 (한국과학기술연구원 유해물질연구센터) ;
  • 정윤철 (한국과학기술연구원 유해물질연구센터)
  • Received : 2006.06.22
  • Accepted : 2006.08.01
  • Published : 2006.09.30
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Abstract

A series of bench-scale membrane filtration experiments were performed to systematically investigate the removal mechanisms of reverse osmosis (RO) and nanofiltration (NF) membranes for BTEX (benzene, toluene, ethylene, xylene), trichloroethylene (TCE) and tetrachloroethylene (PCE). The molecular weight of these organic compounds ranged from 78 to 166 dalton. The rejection of organic compounds by RO/NF membranes varied significantly from 59.6 to 99.2% depending on solute and membrane types. Specifically, experimental results demonstrated that the removal efficiency of RO/NF membranes increased as solute molecular characteristics such as W/L (molecular width/length) ${\times}$ $M_W$ (molecular weight) and octanol-water partition coefficient increased. This observation suggested that the rejection of small organic compounds by RO/NF membranes was determined by the combined effect of physical (molecular size and shape) and chemical (hydrophobicity) properties.

Keywords

Acknowledgement

Grant : 생물학적 유해물질 제어기술 개발

Supported by : 한국과학기술연구원

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