한국지하수토양환경학회:학술대회논문집 (Proceedings of the Korean Society of Soil and Groundwater Environment Conference)
- 한국지하수토양환경학회 2003년도 총회 및 춘계학술발표회
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- Pages.120-123
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- 2003
Immobilization of MTBE using cyclodextrins
- Baek, Ki-Tae (National Research Laboratory for Environmental Remediation, Department of Chemical & Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST)) ;
- Yang, Ji-Won (National Research Laboratory for Environmental Remediation, Department of Chemical & Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST))
- 발행 : 2003.04.01
초록
Immobilization behavior of methyl tert-butyl ether (MTBE) by various cyclodextrins(CDs) was studied to investigate the feasibility of MTBE removal using cyclodexrins. Even though MTBE has relatively low hydrophobicity and higher polarity compared to other organics, it was effectively immobilized by CDs. The immobilization isotherms was shown as a type of Freundlich isotherms, and the immobilization capacity of -CDs was the largest among natural COs. The initial apparent association constant for MTBE-CD complex follows the order : gamma = beta > methyl-beta > hydroxypropyl beta > alpha. These differences of the constants are related to the size of MTBE and CDs. The size of beta-CD and gamma-CD is large to encapsulate MTBE molecule into the cavity, which that of alpha-CB is too small to encapsulate MTBE.