Remediation of TCE-contaminated groundwater using nanocatalyst and bacteria |
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Authors: | Kang Ser Ku Seo Hyunhee Sun Eunyoung Kim Inseon Roh Yul |
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Affiliation: | Department of Earth and Environmental Sciences, Chonnam National University, Gwangju 500-757, Korea. |
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Abstract: | The objective of this study was to develop and evaluate the remediation of trichloroethene (TCE)-contaminated groundwater using both a nanocatalyst (bio-Zn-magnetite) and bacterium (similar to Clostridium quinii) in anoxic environments. Of the 7 nanocatalysts tested, bio-Zn-magnetite showed the highest TCE dechlorination efficiency, with an average of ca. 90% within 8 days in a batch experiment. The column tests confirmed that the application of bio-Zn-magnetite in combination with the bacterium achieved high degradation efficiency (ca. 90%) of TCE within 5 days compared to the nanocatalyst only, which degraded only 30% of the TCE. These results suggest that the application of a nanocatalyst and the bacterium have potential for the remediation of TCE-contaminated groundwater in subsurface environments. |
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