Temperature effect on tert-butyl alcohol (TBA) biodegradation kinetics in hyporheic zone soils
<p>Abstract</p> <p>Background</p> <p>Remediation of tert-butyl alcohol (TBA) in subsurface waters should be taken into consideration at reformulated gasoline contaminated sites since it is a biodegradation intermediate of methyl tert-butyl ether (MTBE), ethyl tert-butyl...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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BMC
2007-09-01
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| Series: | BioMedical Engineering OnLine |
| Online Access: | http://www.biomedical-engineering-online.com/content/6/1/34 |
| _version_ | 1818358339683221504 |
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| author | Sims Ronald C Greenwood Mark H McLean Joan E Doucette William J |
| author_facet | Sims Ronald C Greenwood Mark H McLean Joan E Doucette William J |
| author_sort | Sims Ronald C |
| collection | DOAJ |
| description | <p>Abstract</p> <p>Background</p> <p>Remediation of tert-butyl alcohol (TBA) in subsurface waters should be taken into consideration at reformulated gasoline contaminated sites since it is a biodegradation intermediate of methyl tert-butyl ether (MTBE), ethyl tert-butyl ether (ETBE), and tert-butyl formate (TBF). The effect of temperature on TBA biodegradation has not been not been published in the literature.</p> <p>Methods</p> <p>Biodegradation of [U <sup>14</sup>C] TBA was determined using hyporheic zone soil microcosms.</p> <p>Results</p> <p>First order mineralization rate constants of TBA at 5°C, 15°C and 25°C were 7.84 ± 0.14 × 10<sup>-3</sup>, 9.07 ± 0.09 × 10<sup>-3</sup>, and 15.3 ± 0.3 × 10<sup>-3 </sup>days-1, respectively (or 2.86 ± 0.05, 3.31 ± 0.03, 5.60 ± 0.14 years<sup>-1</sup>, respectively). Temperature had a statistically significant effect on the mineralization rates and was modelled using the Arrhenius equation with frequency factor (A) and activation energy (Ea) of 154 day<sup>-1 </sup>and 23,006 mol/J, respectively.</p> <p>Conclusion</p> <p>Results of this study are the first to determine mineralization rates of TBA for different temperatures. The kinetic rates determined in this study can be used in groundwater fate and transport modelling of TBA at the Ronan, MT site and provide an estimate for TBA removal at other similar shallow aquifer sites and hyporheic zones as a function of seasonal change in temperature.</p> |
| first_indexed | 2024-12-13T20:27:26Z |
| format | Article |
| id | doaj.art-6d8cb78eb44d4cd4b610173e827289c9 |
| institution | Directory Open Access Journal |
| issn | 1475-925X |
| language | English |
| last_indexed | 2024-12-13T20:27:26Z |
| publishDate | 2007-09-01 |
| publisher | BMC |
| record_format | Article |
| series | BioMedical Engineering OnLine |
| spelling | doaj.art-6d8cb78eb44d4cd4b610173e827289c92022-12-21T23:32:31ZengBMCBioMedical Engineering OnLine1475-925X2007-09-01613410.1186/1475-925X-6-34Temperature effect on tert-butyl alcohol (TBA) biodegradation kinetics in hyporheic zone soilsSims Ronald CGreenwood Mark HMcLean Joan EDoucette William J<p>Abstract</p> <p>Background</p> <p>Remediation of tert-butyl alcohol (TBA) in subsurface waters should be taken into consideration at reformulated gasoline contaminated sites since it is a biodegradation intermediate of methyl tert-butyl ether (MTBE), ethyl tert-butyl ether (ETBE), and tert-butyl formate (TBF). The effect of temperature on TBA biodegradation has not been not been published in the literature.</p> <p>Methods</p> <p>Biodegradation of [U <sup>14</sup>C] TBA was determined using hyporheic zone soil microcosms.</p> <p>Results</p> <p>First order mineralization rate constants of TBA at 5°C, 15°C and 25°C were 7.84 ± 0.14 × 10<sup>-3</sup>, 9.07 ± 0.09 × 10<sup>-3</sup>, and 15.3 ± 0.3 × 10<sup>-3 </sup>days-1, respectively (or 2.86 ± 0.05, 3.31 ± 0.03, 5.60 ± 0.14 years<sup>-1</sup>, respectively). Temperature had a statistically significant effect on the mineralization rates and was modelled using the Arrhenius equation with frequency factor (A) and activation energy (Ea) of 154 day<sup>-1 </sup>and 23,006 mol/J, respectively.</p> <p>Conclusion</p> <p>Results of this study are the first to determine mineralization rates of TBA for different temperatures. The kinetic rates determined in this study can be used in groundwater fate and transport modelling of TBA at the Ronan, MT site and provide an estimate for TBA removal at other similar shallow aquifer sites and hyporheic zones as a function of seasonal change in temperature.</p>http://www.biomedical-engineering-online.com/content/6/1/34 |
| spellingShingle | Sims Ronald C Greenwood Mark H McLean Joan E Doucette William J Temperature effect on tert-butyl alcohol (TBA) biodegradation kinetics in hyporheic zone soils BioMedical Engineering OnLine |
| title | Temperature effect on tert-butyl alcohol (TBA) biodegradation kinetics in hyporheic zone soils |
| title_full | Temperature effect on tert-butyl alcohol (TBA) biodegradation kinetics in hyporheic zone soils |
| title_fullStr | Temperature effect on tert-butyl alcohol (TBA) biodegradation kinetics in hyporheic zone soils |
| title_full_unstemmed | Temperature effect on tert-butyl alcohol (TBA) biodegradation kinetics in hyporheic zone soils |
| title_short | Temperature effect on tert-butyl alcohol (TBA) biodegradation kinetics in hyporheic zone soils |
| title_sort | temperature effect on tert butyl alcohol tba biodegradation kinetics in hyporheic zone soils |
| url | http://www.biomedical-engineering-online.com/content/6/1/34 |
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