| Complete biological reductive transformation of tetrachloroethene to ethane. | |
| | |
MedLine Citation:
|
PMID: 1622277 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
Reductive dechlorination of tetrachloroethene (perchloroethylene; PCE) was observed at 20 degrees C in a fixed-bed column, filled with a mixture (3:1) of anaerobic sediment from the Rhine river and anaerobic granular sludge. In the presence of lactate (1 mM) as an electron donor, 9 microM PCE was dechlorinated to ethene. Ethene was further reduced to ethane. Mass balances demonstrated an almost complete conversion (95 to 98%), with no chlorinated compounds remaining (less than 0.5 micrograms/liter). When the temperature was lowered to 10 degrees C, an adaptation of 2 weeks was necessary to obtain the same performance as at 20 degrees C. Dechlorination by column material to ethene, followed by a slow ethane production, could also be achieved in batch cultures. Ethane was not formed in the presence of bromoethanesulfonic acid, an inhibitor of methanogenesis. The high dechlorination rate (3.7 mumol.l-1.h-1), even at low temperatures and considerable PCE concentrations, together with the absence of chlorinated end products, makes reductive dechlorination an attractive method for removal of PCE in bioremediation processes. |
| | |
Authors:
|
W P de Bruin; M J Kotterman; M A Posthumus; G Schraa; A J Zehnder |
Related Documents
:
|
16629017 - Reduction of campylobacter jejuni on chicken wings by chemical treatments. 12732327 - Metabolic pathway engineering in lactic acid bacteria. 15217107 - Production of lactic acid from paper sludge by simultaneous saccharification and fermen... 11428577 - Amino acid-decarboxylase activity of bacteria isolated from fermented pork sausages. 10199817 - Amino acids are compatible osmolytes for volume recovery after hypertonic shrinkage in ... 6392377 - Chemical analyses of membranes isolated from streptococcus mutans bht. |
Publication Detail:
|
Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
|
Title: Applied and environmental microbiology Volume: 58 ISSN: 0099-2240 ISO Abbreviation: Appl. Environ. Microbiol. Publication Date: 1992 Jun |
Date Detail:
|
Created Date: 1992-08-06 Completed Date: 1992-08-06 Revised Date: 2010-09-10 |
Medline Journal Info:
|
Nlm Unique ID: 7605801 Medline TA: Appl Environ Microbiol Country: UNITED STATES |
Other Details:
|
Languages: eng Pagination: 1996-2000 Citation Subset: IM |
Affiliation:
|
Department of Microbiology, Wageningen Agricultural University, The Netherlands. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Ethane
/
pharmacokinetics Metabolic Detoxication, Drug Oxidation-Reduction Tetrachloroethylene / pharmacokinetics* Water Microbiology Water Pollutants, Chemical / pharmacokinetics |
| Chemical | |
Reg. No./Substance:
|
0/Water Pollutants, Chemical; 127-18-4/Tetrachloroethylene; 74-84-0/Ethane |
| Comments/Corrections | |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Growth phase, cellular hydrophobicity, and adhesion in vitro of lactobacilli colonizing the keratini...
Next Document: Incubation of water samples containing amoebae improves detection of legionellae by the culture meth...