• Title, Summary, Keyword: Soil Slurry-sequencing Batch Reactor (SS-SBR)

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Removal of polycyclic aromatic hydrocarbons from contaminated soil in a two-phase partitioning bioreactor

  • Lee, Jae-Young;Kwon, Tae-Soon;Lee, Young-Chul
    • The Korean Journal of Chemical Engineering
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    • v.34 no.9
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    • pp.2418-2422
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    • 2017
  • A two-phase partitioning bioreactor was employed to remediate soil contaminated by a mixture of polycyclic aromatic hydrocarbons consisting of phenanthrene, anthracene, and pyrene. In this study, the transfer of three PAHs into the water-immiscible liquid phase (silicone oil or paraffine oil) from the soil was investigated during the first 24 h. And then, phenanthrene and anthracene were degraded by approximately 90% and 80%, respectively, compared with initial concentration in soil, but pyrene was not degraded during seven days of operation period. In addition, the feasibility of a soil slurry sequencing batch reactor system in terms of continuously operating a two-phase partitioning bioreactor was investigated. Phenanthrene and anthracene were degraded semi-continuously and repeatedly during two operating cycles. Pyrene was still not degraded and was just transferred into the water-immiscible liquid phase considering its solubility.