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| Web URL(s): | https://dl.sciencesocieties.org/publications/jeq/pdfs/26/2/JEQ0260020445
Last checked: 12/12/2016
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| Publication Type:
| Refereed |
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| Author(s): | Ostendorf, D. W.;
DeGroot, D. J.;
Pollock, S. J.;
Long, L. J. |
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| Author Affiliation: | Ostendorf, DeGroot, and Long; Civil and Environmental Engineering Dep., University of Massachusetts, Amherst, MA 01003: Pollock, Research and Materials Section, Massachusetts Highway Dep., South Boston, MA 02210 |
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| Title: | Aerobic degradation potential assessment from oxygen and carbon dioxide soil gas concentrations in roadside soil |
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| Section: | Biodegradation and bioremediation
Other records with the "Biodegradation and bioremediation" Section
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| Source: | Journal of Environmental Quality. Vol. 26, No. 2, March/April 1997, p. 445-453. |
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| Publishing Information: | Madison, Wisconsin: American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America |
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| # of Pages: | 9 |
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| Keywords: | TIC Keywords: Degradation; Carbon dioxide; Roadside soils; Groundwater; Biodegradation; Deicing
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| Abstract/Contents: | "The application of calcium magnesium acetate [CMA; Ca₀.3 Mg₀.7-(C₂H₃O₂)₂] to highways as a deicing agent induces aerobic acetate degradation by microorganisms in the capillary fringe, which may reduce O₂ demand in the underlying groundwater. We assessed this aerobic degradation potential by computing the diffusive fluxes of O₂ and CO₂ from measured soil gas concentrations in the unsaturated zone of a mildly acidic roadside soil. The fluxes were relevant to the potential assessment because O₂ is consumed and CO₂ is generated by the aerobic degradation of organic substrates such as acetate. Soil gas O₂ and CO₂ were measured on a monthly basis in tubing clusters in the unsaturated zone over a 2-yr period using portable meters. Quasi-steady gaseous diffusion models were calibrated with the data, showing that O₂ diffused into the fringe at a rate that was proportional to the existing diffusive flux of CO₂. The modeled fluxes were consistent with an independent estimate of acetate-based microcosm reation rates in the capillary fringe. Roadside soils have the potential to significantly degrade CMA under aerobic conditions before the deicing agent reaches the water table, thus reducing O₂ demand in the groundwater." |
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| Language: | English |
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| References: | 23 |
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| Note: | Figures
Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Ostendorf, D. W., D. J. DeGroot, S. J. Pollock, and L. J. Long. 1997. Aerobic degradation potential assessment from oxygen and carbon dioxide soil gas concentrations in roadside soil. J. Environ. Qual. 26(2):p. 445-453. |
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| Web URL(s):
https://dl.sciencesocieties.org/publications/jeq/pdfs/26/2/JEQ0260020445
Last checked: 12/12/2016
Requires: PDF Reader
Notes: Item is within a limited-access website |
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MSU catalog number: S 900 .J6 |
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