2012
DOI: 10.1007/s10532-012-9598-x
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Low and high acetate amendments are equally as effective at promoting complete dechlorination of trichloroethylene (TCE)

Abstract: Experiments with trichloroethylene-contaminated aquifer material demonstrated that TCE, cis-DCE, and VC were completely degraded with concurrent Fe(III) or Fe(III) and sulfate reduction when acetate was amended at stoichiometric concentration; competing TEAPs did not inhibit ethene production. Adding 10× more acetate did not increase the rate or extent of TCE reduction, but only increased methane production. Enrichment cultures demonstrated that ~90 μM TCE or ~22 μM VC was degraded primarily to ethene within 2… Show more

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Cited by 20 publications
(12 citation statements)
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“…Geobacter were found in all cultures, and they were dominant in acetate-fed culture, accounting~60 % of total bacteria. Geobacter are acetate oxidizers able to reduce TCE but only to cis-DCE (Wei and Finneran 2013). Our results are consistent with Wei and Finneran (2013), who showed that cis-DCE accumulated in the acetate-fed culture containing Geobacter.…”
Section: Relationship Of Homoacetogens To Tce Reductionsupporting
confidence: 91%
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“…Geobacter were found in all cultures, and they were dominant in acetate-fed culture, accounting~60 % of total bacteria. Geobacter are acetate oxidizers able to reduce TCE but only to cis-DCE (Wei and Finneran 2013). Our results are consistent with Wei and Finneran (2013), who showed that cis-DCE accumulated in the acetate-fed culture containing Geobacter.…”
Section: Relationship Of Homoacetogens To Tce Reductionsupporting
confidence: 91%
“…Geobacter are acetate oxidizers able to reduce TCE but only to cis-DCE (Wei and Finneran 2013). Our results are consistent with Wei and Finneran (2013), who showed that cis-DCE accumulated in the acetate-fed culture containing Geobacter. Geobacter were reported able to biosynthesize the cobamide, and inter-species transfer them to Dehalococcoides, who require cyanocobalamin (vitamin B 12 ) for growth (Yan et al 2012), but we supplied ample vitamin B 12 to the medium.…”
Section: Relationship Of Homoacetogens To Tce Reductionsupporting
confidence: 91%
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“…The VC levels in BS-BA and BS samples dropped below the recommended MCL of 2.0 g L −1 . With regards to these two approaches, addition of excessive electron donors may not benefit or hasten the dechlorination process, while it may increase treatment cost [40]. Hence, during this trial low amounts of acetate (1 kg/BS and BS-BA well) were injected initially and then the re-injections were carried out upon donor depletion.…”
Section: Reductive Dechlorination Of Tce To Ethenementioning
confidence: 99%
“…Biogeochemical cycles involving carbon (C), nitrogen (N), sulfur (S) and iron 31 (Fe) are driven by fundamental oxidation-reduction processes in which electrons flow 32 from carbon substrates and other electron donors to those elements that serve as Thus, the dechlorination of PCP depends on the abundance and activity of 49 dehalorespiring bacteria which could be influenced by interaction with alternative 50 terminal electron accepting processes. In a previous study using a liquid pure culture 51 system, we demonstrated that the iron-reducing bacterium, Clostridium beijerinckii Z, 52 could dechlorinate PCP under anaerobic conditions, and that the dechlorination rate 53 was accelerated during simultaneous Fe(III) reduction 6 .…”
Section: Introductionmentioning
confidence: 99%