Natural attenuation of chlorinated hydrocarbons in a freshwater wetland
By: Michelle M. Lora, Lisa D. Olsen, and Barrett L. Smith
Edited by: Bruce C. Alleman and Andrea Leeson
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Abstract
Natural attenuation of chlorinated volatile organic compounds (VOC's) occurs as ground water discharges from a sand aquifer to a freshwater wetland at Aberdeen Proving Ground, Md. Field and laboratory results indicate that biotransformation in the anaerobic wetland sediments is an important attenuation process. Relatively high concentrations of the parent compounds trichloroethylene (TCE) and 1,1,2,2-tetrachloroethane (PCA) and low or undetectable concentrations of daughter products were measured in the aquifer. In contrast, relatively high concentrations of the daughter products cis- and trans-1,2-dichloroethylene (12DCE); vinyl chloride (VC); 1,1,2-trichloroethane (112TCA); and 1,2-dichloroethane (12DCA) were measured in ground water in the wetland sediments, although total VOC concentrations decreased upward from about 1 mu mol/L (micromoles per liter) at the base of the wetland sediments to less than 0.2 near the surface. Microcosm experiments showed that 12DCE and VC are produced from anaerobic degradation of both TCE and PCA; PCA degradation also produced 112TCA and 12DCA.
Suggested Citation
Lora, M.M., Olsen, L., and Smith, B.L., 1997, Natural attenuation of chlorinated hydrocarbons in a freshwater wetland, in In situ and on-site bioremediation: Papers from the Fourth International In Situ and On-Site Bioremediation Symposium, v. 3, New Orleans, LA, April 28-May 1, 1997, p. 207-212.
Study Area
| Publication type | Conference Paper |
|---|---|
| Publication Subtype | Conference Paper |
| Title | Natural attenuation of chlorinated hydrocarbons in a freshwater wetland |
| Volume | 3 |
| Year Published | 1997 |
| Language | English |
| Publisher | Battelle Press |
| Publisher location | Columbus, OH |
| Description | 6 p. |
| Larger Work Type | Book |
| Larger Work Subtype | Conference publication |
| Larger Work Title | In situ and on-site bioremediation: Papers from the Fourth International In Situ and On-Site Bioremediation Symposium |
| First page | 207 |
| Last page | 212 |
| Conference Title | Fourth International In Situ and On-Site Bioremediation Symposium |
| Conference Location | New Orleans, LA |
| Conference Date | April 28-May 1, 1997 |
| Country | United States |
| State | Maryland |
| County | Harford County |