Advanced search
1 file | 98.34 KB

Complete lab-scale detoxification of groundwater containing 1,2-dichloroethane

Author
Organization
Abstract
The suspected carcinogenic solvent 1,2-dichloroethane (1,2-DCA) is the most abundant chlorinated C-2 groundwater pollutant on earth. However, an efficient reductive in situ detoxification technology for this compound is not known. Detoxification results of 1,2-DCA with the recently isolated anaerobic bacterium Desulfitobacterium dichloroeliminans strain DCA1 are presented. First, it was verified that strain DCA1 could compete for nutrients in the presence of fast-growing Enterococcus faecalis; the latter was observed in the enrichment culture from which strain DCA1 was isolated. Subsequently, lab-scale bioaugmentation of the strain to groundwater containing 40 mg 1,2-DCA/l indicated that the bacterium has strong metabolic activity under prevailing environmental conditions, converting the pollutant into ethene. During exponential growth, the maximum 1,2-DCA dechlorination rate exceeded 350 nmol chloride released per min per mg total bacterial protein. Growth and dechlorination within the community with autochthonous bacteria indicated a high competitive strength of strain DCA1. Interestingly this dechlorination process does not produce any toxic byproducts, such as vinyl chloride. Furthermore, complete groundwater detoxification happens within a short time-frame (days) and is robust in terms of bacterial competition, oxygen tolerance, high ionic strength, and pH range.
Keywords
MICROBIAL DEHALORESPIRATION, REDUCTIVE DECHLORINATION, ANAEROBIC-BACTERIA, TETRACHLOROETHENE, TRANSFORMATIONS

Downloads

  • (...).pdf
    • full text
    • |
    • UGent only
    • |
    • PDF
    • |
    • 98.34 KB

Citation

Please use this url to cite or link to this publication:

Chicago
De Wildeman, Stefaan, G Linthout, Herman Van Langenhove, and Willy Verstraete. 2004. “Complete Lab-scale Detoxification of Groundwater Containing 1,2-dichloroethane.” Applied Microbiology and Biotechnology 63 (5): 609–612.
APA
De Wildeman, Stefaan, Linthout, G., Van Langenhove, H., & Verstraete, W. (2004). Complete lab-scale detoxification of groundwater containing 1,2-dichloroethane. APPLIED MICROBIOLOGY AND BIOTECHNOLOGY, 63(5), 609–612.
Vancouver
1.
De Wildeman S, Linthout G, Van Langenhove H, Verstraete W. Complete lab-scale detoxification of groundwater containing 1,2-dichloroethane. APPLIED MICROBIOLOGY AND BIOTECHNOLOGY. 2004;63(5):609–12.
MLA
De Wildeman, Stefaan, G Linthout, Herman Van Langenhove, et al. “Complete Lab-scale Detoxification of Groundwater Containing 1,2-dichloroethane.” APPLIED MICROBIOLOGY AND BIOTECHNOLOGY 63.5 (2004): 609–612. Print.
@article{209524,
  abstract     = {The suspected carcinogenic solvent 1,2-dichloroethane (1,2-DCA) is the most abundant chlorinated C-2 groundwater pollutant on earth. However, an efficient reductive in situ detoxification technology for this compound is not known. Detoxification results of 1,2-DCA with the recently isolated anaerobic bacterium Desulfitobacterium dichloroeliminans strain DCA1 are presented. First, it was verified that strain DCA1 could compete for nutrients in the presence of fast-growing Enterococcus faecalis; the latter was observed in the enrichment culture from which strain DCA1 was isolated. Subsequently, lab-scale bioaugmentation of the strain to groundwater containing 40 mg 1,2-DCA/l indicated that the bacterium has strong metabolic activity under prevailing environmental conditions, converting the pollutant into ethene. During exponential growth, the maximum 1,2-DCA dechlorination rate exceeded 350 nmol chloride released per min per mg total bacterial protein. Growth and dechlorination within the community with autochthonous bacteria indicated a high competitive strength of strain DCA1. Interestingly this dechlorination process does not produce any toxic byproducts, such as vinyl chloride. Furthermore, complete groundwater detoxification happens within a short time-frame (days) and is robust in terms of bacterial competition, oxygen tolerance, high ionic strength, and pH range.},
  author       = {De Wildeman, Stefaan and Linthout, G and Van Langenhove, Herman and Verstraete, Willy},
  issn         = {0175-7598},
  journal      = {APPLIED MICROBIOLOGY AND BIOTECHNOLOGY},
  keyword      = {MICROBIAL DEHALORESPIRATION,REDUCTIVE DECHLORINATION,ANAEROBIC-BACTERIA,TETRACHLOROETHENE,TRANSFORMATIONS},
  language     = {eng},
  number       = {5},
  pages        = {609--612},
  title        = {Complete lab-scale detoxification of groundwater containing 1,2-dichloroethane},
  url          = {http://dx.doi.org/10.1007/s00253-003-1363-y},
  volume       = {63},
  year         = {2004},
}

Altmetric
View in Altmetric
Web of Science
Times cited: