Demonstration of combined zero-valent iron and electrical resistance heating for in situ trichloroethene remediation
Truex, MJ; Macbeth, TW; Vermeul, VR; Fritz, BG; Mendoza, DP; Mackley, RD; Wietsma, TW; Sandberg, G; Powell, T; Powers, J; Pitre, E; Michalsen, M; Ballock-Dixon, SJ; Zhong, L; Oostrom, M
| HERO ID | 2128701 |
|---|---|
| In Press | No |
| Year | 2011 |
| Title | Demonstration of combined zero-valent iron and electrical resistance heating for in situ trichloroethene remediation |
| Authors | Truex, MJ; Macbeth, TW; Vermeul, VR; Fritz, BG; Mendoza, DP; Mackley, RD; Wietsma, TW; Sandberg, G; Powell, T; Powers, J; Pitre, E; Michalsen, M; Ballock-Dixon, SJ; Zhong, L; Oostrom, M |
| Journal | Environmental Science & Technology |
| Volume | 45 |
| Issue | 12 |
| Page Numbers | 5346-5351 |
| Abstract | The effectiveness of in situ treatment using zero-valent iron (ZVI) for nonaqueous phase or significant sediment-associated contaminant mass can be limited by relatively low rates of mass transfer to bring contaminants in contact with the reactive media. For a field test in a trichloroethene (TCE) source area, combining moderate-temperature subsurface electrical resistance heating with in situ ZVI treatment was shown to accelerate TCE treatment by a factor of about 4 based on organic daughter products and a factor about 8 based on chloride concentrations. A mass-discharge-based analysis was used to evaluate reaction, dissolution, and volatilization processes at ambient groundwater temperature (~10 °C) and as temperature was increased up to about 50 °C. Increased reaction and contaminant dissolution were observed with increased temperature, but vapor- or aqueous-phase migration of TCE out of the treatment zone was minimal during the test because reactions maintained low aqueous-phase TCE concentrations. |
| Doi | 10.1021/es104266a |
| Pmid | 21591672 |
| Wosid | WOS:000291422200042 |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Language Text | English |