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자료유형
학술저널
저자정보
저널정보
한국환경보건학회 한국환경보건학회지 한국환경보건학회지 제28권 제5호
발행연도
2002.1
수록면
65 - 70 (6page)

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Recently, surfactants were frequently used in order to desorb the hydrophobic organic compounds (HOCs) from soil and to enhance the bioavailability. Among them, -cyclodextrin (-CD) is one of those. This study was performed to investigate the binding characteristics between benzene and -CD and to examine the bioavailability of benzene. First, we investigated binding charasteristics between benzene and -CD in water and water/soil system. Then, we examined the effect of -CD on the biodegradation of benzene in water and water/soil system. Experimental results on the binding characteristics showed that -CD resulted in an efficient complex formation with benzene. As -CD concentration increased, the benzene concentration complexed with -CD rapidly increased to 30~40% initial benzene added, and reached the equilibrium. We also investigated the effect of -CD on the desorption of benzene from soil in the water/soil system. As -CD concentration increased, benzene concentration desorbed into water increased up to 90%. However, in its application to biodegradation of benzene in water and water/soil system, the biodegradation rate of benzene did not improved in the presence of -CD compared with in the absense of -CD. This result indicated that -CD was more preferentially used as a carbon source than benzene. Therefore, for remediation of benzene contaminated soils, -CD can be used as a surfactant to desorb benzene from soil, and then ex-situ chemical treatment can be applied for the remediation.

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