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231223s2008 xx |||||o 00| ||eng c |
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|a 10.2166/wst.2008.432
|2 doi
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|a eng
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|a Chung, Jinwook
|e verfasserin
|4 aut
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|a Simultaneous bio-reduction of trichloroethene, trichloroethane, and chloroform using a hydrogen-based membrane biofilm reactor
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|c 2008
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|a Text
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Completed 26.01.2009
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|a Date Revised 21.11.2013
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|a published: Print
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|a Citation Status MEDLINE
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|a (c) IWA Publishing 2008.
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|a The contamination of water by chlorinated solvents is recognized as a serious and widespread problem throughout the industrialized world. Here, we focus on three chlorinated solvents that are among those most commonly detected and that have distinct chemical features: trichloroethene (TCE), trichloroethane (TCA), and chloroform (CF). Because many contaminated waters contain mixtures of the chlorinated solvents, a treatment technology that detoxifies all of them simultaneously is highly desirable. The membrane biofilm reactor (MBfR) is a recent technological advance that makes it possible to deliver H(2) gas to bacteria efficiently and safely, despite hydrogen's low water solubility and risk of forming a combustible atmosphere when mixed with air. The objectives of this work are to document whether or not the three chlorinated compounds can be dechlorinated simultaneously in a H(2)-based MBfR and to determine if competitive or inhibitory interactions affect bio-reduction of any of the solvents. The main finding is a demonstration that directly using H(2) as the electron donor makes it possible to bio-reduce combinations of different chlorinated solvents. This finding supports that the H(2)-based MBfR can treat multiple chlorinated solvents in one step, addressing a common groundwater situation. We saw possible evidence of inhibition by CF at a concentration greater than about 1 muM, competition for H(2) from sulfate and nitrate reductions, and possible inhibition of TCE reduction from the accumulation of chloroethane (CA) or chloromethane (CM)
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|a Journal Article
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|a Membranes, Artificial
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|a Trichloroethanes
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|a Trichloroethylene
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|a Chloroform
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|a Hydrogen
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|a Rittmann, Bruce E
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|i Enthalten in
|t Water science and technology : a journal of the International Association on Water Pollution Research
|d 1986
|g 58(2008), 3 vom: 20., Seite 495-501
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|u http://dx.doi.org/10.2166/wst.2008.432
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