Numerical models of phosphate esters in the Chattahoochee River
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2004.
| Main Author: | |
|---|---|
| Other Authors: | |
| Format: | Thesis |
| Language: | eng |
| Published: |
Massachusetts Institute of Technology
2005
|
| Subjects: | |
| Online Access: | http://hdl.handle.net/1721.1/29405 |
| _version_ | 1811089324968509440 |
|---|---|
| author | Haffey, Samuel Fraad, 1973- |
| author2 | Peter Shanahan. |
| author_facet | Peter Shanahan. Haffey, Samuel Fraad, 1973- |
| author_sort | Haffey, Samuel Fraad, 1973- |
| collection | MIT |
| description | Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2004. |
| first_indexed | 2024-09-23T14:17:25Z |
| format | Thesis |
| id | mit-1721.1/29405 |
| institution | Massachusetts Institute of Technology |
| language | eng |
| last_indexed | 2024-09-23T14:17:25Z |
| publishDate | 2005 |
| publisher | Massachusetts Institute of Technology |
| record_format | dspace |
| spelling | mit-1721.1/294052019-04-10T13:13:41Z Numerical models of phosphate esters in the Chattahoochee River Haffey, Samuel Fraad, 1973- Peter Shanahan. Massachusetts Institute of Technology. Dept. of Civil and Environmental Engineering. Massachusetts Institute of Technology. Dept. of Civil and Environmental Engineering. Civil and Environmental Engineering. Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2004. Includes bibliographical references (leaves 124-127). A numerical model was constructed to assess the magnitude of organophosphoric acid triester sinks in the Chattahoochee River and to identify concentration patterns downstream of point source discharges. The model was built using WASP5 and supporting software packages. The model simulated mass transport of tri-butyl phosphate, tri (2-butoxyethyl) phosphate, and tri (2-chloroethyl) phosphate within a reach of the river bounded by Buford Dam and Northern Atlanta. Several potential mechanisms for the removal of the phosphate esters from the water column were considered. These were biodegradation, sorption to settling solids, volatilization, and oxidation by free radicals. Of the three phosphate esters considered by the model, tri (2-chloroethyl) phosphate was predicted to be the most resistant to degradation by natural attenuation processes. Tri (2- butoxyethyl) phosphate showed the most potential for degradation in surface waters. Biodegradation and sorption to settling solids were predicted to be the most effective processes for the removal of tri (2-butoxyethyl) phosphate. Concentration patterns at several locations downstream of point source discharges were predicted for the three compounds. Concentration patterns were found to be affected by the diurnal flow variation caused by the operation of two hydroelectric dams within the modeled reach. by Samuel Fraad Haffey. M.Eng. 2005-10-14T20:22:09Z 2005-10-14T20:22:09Z 2004 2004 Thesis http://hdl.handle.net/1721.1/29405 56133083 eng M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission. http://dspace.mit.edu/handle/1721.1/7582 135 leaves 4983716 bytes 4983524 bytes application/pdf application/pdf application/pdf n-us-al n-us-fl n-us-ga Massachusetts Institute of Technology |
| spellingShingle | Civil and Environmental Engineering. Haffey, Samuel Fraad, 1973- Numerical models of phosphate esters in the Chattahoochee River |
| title | Numerical models of phosphate esters in the Chattahoochee River |
| title_full | Numerical models of phosphate esters in the Chattahoochee River |
| title_fullStr | Numerical models of phosphate esters in the Chattahoochee River |
| title_full_unstemmed | Numerical models of phosphate esters in the Chattahoochee River |
| title_short | Numerical models of phosphate esters in the Chattahoochee River |
| title_sort | numerical models of phosphate esters in the chattahoochee river |
| topic | Civil and Environmental Engineering. |
| url | http://hdl.handle.net/1721.1/29405 |
| work_keys_str_mv | AT haffeysamuelfraad1973 numericalmodelsofphosphateestersinthechattahoocheeriver |