Methanogenic biotransformation of chlorinated hydrocarbons in ground-water
Corapcioglu, MY; Hossain, MA; Hossain, MA
HERO ID
3559368
Reference Type
Journal Article
Year
1991
Language
English
| HERO ID | 3559368 |
|---|---|
| In Press | No |
| Year | 1991 |
| Title | Methanogenic biotransformation of chlorinated hydrocarbons in ground-water |
| Authors | Corapcioglu, MY; Hossain, MA; Hossain, MA |
| Journal | Journal of Environmental Engineering |
| Volume | 117 |
| Issue | 1 |
| Page Numbers | 47-65 |
| Abstract | Chlorinated hydrocarbons enter aquifers by various ways. Bacteria found in ground water transform the dissolved compounds into one or more intermediate compounds, then into a final compound that is sometimes not biodegradable. Biotransformation of tetrachloroethylene (PCE) to trichloroethylene (TCE), dichloroethylene (DCE), and vinyl chloride (VC) by a reductive dehalogenation process catalyzed by microorganisms has been observed in aquifers and laboratory columns under methanogenic conditions. The pathway for conversion includes the replacement of a chlorine atom by a hydrogen atom. The quantification of these conversion and migration processes of parent and intermediate compounds is achieved by mole balance equations of respective compounds, Michaelis-Menten kinetic equations, and stoichiometric relations. Following a simplification of the general model for a column experiment, a numerical solution is obtained by using a finite difference scheme to provide estimates of mole fractions of parent and intermediate compounds. The numerical results show a favorable match with experimental data. A significant sensitivity to model parameters, particularly the rate constants of parent compounds, is discovered. It is concluded that biotransformation processes can be satisfactorily quantified by first-order rate expressions. |
| Doi | 10.1061/(asce)0733-9372(1991)117:1(47) |
| Wosid | WOS:A1991EV50700003 |
| Url | https://search.proquest.com/docview/19090378?accountid=171501 |
| Is Certified Translation | No |
| Dupe Override | No |
| Comments | Journal: Journal of Environmental Engineering (United States) ISSN: |
| Is Public | Yes |
| Language Text | English |
| Keyword | microorganisms; vinyl chlorides; bioconversion; chlorinated hydrocarbons; nitrogen; groundwater; modeling; aquifers; anaerobic systems; stoichiometry; phosphorus; aquatic organisms; biodegradation |
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