Natural Attenuation model and degrading bacterial community of 1,1,1-Trichloroethane contaminant in Shallow Groundwater in Shanghai
Natural attenuation is an effective and feasible technology for controlling groundwater contamination. This study investigated the potential effectiveness and mechanisms of natural attenuation of 1,1,1-trichloroethane (TCA) contaminants in in Shallow Groundwater in Shanghai by using a column simulat...
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2015-08-01
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doaj-7a34b61bd7e94be984f3f0eba50563012020-11-25T00:04:13ZengFrontiers Media S.A.Frontiers in Microbiology1664-302X2015-08-01610.3389/fmicb.2015.00839153563Natural Attenuation model and degrading bacterial community of 1,1,1-Trichloroethane contaminant in Shallow Groundwater in ShanghaiQiang eLu0Ruili eZhu1Jie eYang2Hui eLi3Yongdi eLiu4Shuguang eLu5Kuangfei eLin6East China University of Science and TechnologyShanghai Academy of Environmental SciencesShanghai Academy of Environmental SciencesEast China University of Science and TechnologyEast China University of Science and TechnologyEast China University of Science and TechnologyEast China University of Science and TechnologyNatural attenuation is an effective and feasible technology for controlling groundwater contamination. This study investigated the potential effectiveness and mechanisms of natural attenuation of 1,1,1-trichloroethane (TCA) contaminants in in Shallow Groundwater in Shanghai by using a column simulation experiment, reactive transport model, and 16S rRNA gene clone library. The results indicated that the majority of the contaminant mass was present at 2-6 m in depth, the contaminated area was approximately 1000 m2, and natural attenuation processes were occurring at the site. The effluent breakthrough curves from the column experiments demonstrated that the effectiveness of TCA natural attenuation in the groundwater accorded with the advection-dispersion-reaction equation. The kinetic parameter of adsorption and biotic dehydrochlorination of TCA was 0.068 m3/kg and 0.0045 d-1. The contamination plume was predicted to diminish and the maximum concentration of TCA decreased to 280 μg/L. The bacterial community in situ groundwater belonged to Trichococcus, Geobacteraceae, Geobacter, Mucilaginibacter and Arthrobacter.http://journal.frontiersin.org/Journal/10.3389/fmicb.2015.00839/fullBacterial communitiesTCANatural attenuationDechlorinationContaminated groundwater |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Qiang eLu Ruili eZhu Jie eYang Hui eLi Yongdi eLiu Shuguang eLu Kuangfei eLin |
spellingShingle |
Qiang eLu Ruili eZhu Jie eYang Hui eLi Yongdi eLiu Shuguang eLu Kuangfei eLin Natural Attenuation model and degrading bacterial community of 1,1,1-Trichloroethane contaminant in Shallow Groundwater in Shanghai Frontiers in Microbiology Bacterial communities TCA Natural attenuation Dechlorination Contaminated groundwater |
author_facet |
Qiang eLu Ruili eZhu Jie eYang Hui eLi Yongdi eLiu Shuguang eLu Kuangfei eLin |
author_sort |
Qiang eLu |
title |
Natural Attenuation model and degrading bacterial community of 1,1,1-Trichloroethane contaminant in Shallow Groundwater in Shanghai |
title_short |
Natural Attenuation model and degrading bacterial community of 1,1,1-Trichloroethane contaminant in Shallow Groundwater in Shanghai |
title_full |
Natural Attenuation model and degrading bacterial community of 1,1,1-Trichloroethane contaminant in Shallow Groundwater in Shanghai |
title_fullStr |
Natural Attenuation model and degrading bacterial community of 1,1,1-Trichloroethane contaminant in Shallow Groundwater in Shanghai |
title_full_unstemmed |
Natural Attenuation model and degrading bacterial community of 1,1,1-Trichloroethane contaminant in Shallow Groundwater in Shanghai |
title_sort |
natural attenuation model and degrading bacterial community of 1,1,1-trichloroethane contaminant in shallow groundwater in shanghai |
publisher |
Frontiers Media S.A. |
series |
Frontiers in Microbiology |
issn |
1664-302X |
publishDate |
2015-08-01 |
description |
Natural attenuation is an effective and feasible technology for controlling groundwater contamination. This study investigated the potential effectiveness and mechanisms of natural attenuation of 1,1,1-trichloroethane (TCA) contaminants in in Shallow Groundwater in Shanghai by using a column simulation experiment, reactive transport model, and 16S rRNA gene clone library. The results indicated that the majority of the contaminant mass was present at 2-6 m in depth, the contaminated area was approximately 1000 m2, and natural attenuation processes were occurring at the site. The effluent breakthrough curves from the column experiments demonstrated that the effectiveness of TCA natural attenuation in the groundwater accorded with the advection-dispersion-reaction equation. The kinetic parameter of adsorption and biotic dehydrochlorination of TCA was 0.068 m3/kg and 0.0045 d-1. The contamination plume was predicted to diminish and the maximum concentration of TCA decreased to 280 μg/L. The bacterial community in situ groundwater belonged to Trichococcus, Geobacteraceae, Geobacter, Mucilaginibacter and Arthrobacter. |
topic |
Bacterial communities TCA Natural attenuation Dechlorination Contaminated groundwater |
url |
http://journal.frontiersin.org/Journal/10.3389/fmicb.2015.00839/full |
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