Interfacial Reduction-Oxidation Mechanisms Governing Fate and Transport of Contaminants in the Vadose Zone | |
Deng, B. ; Thornton, Edward C. ; Olsen, Khris B. ; Cantrell, Kirk J. ; Amonette, James E. | |
New Mexico Institute of Mining and Technology | |
关键词: Soils; Hydrogen Sulfides; 54 Environmental Sciences; Transport; Field Tests; | |
DOI : 10.2172/833522 RP-ID : EMSP-70088--2001 RP-ID : FG07-99ER15011 RP-ID : 833522 |
|
美国|英语 | |
来源: UNT Digital Library | |
【 摘 要 】
Immobilization of toxic and radioactive metals (e.g., Cr, Tc, and U) in the vadose zone by in situ gaseous reduction using hydrogen sulfide (H2S) is a promising technology the U.S. Department of Energy (DOE) is developing for soil remediation. Earlier laboratory studies have shown that Cr(VI) in a number of soil samples can be effectively immobilized by treatment with dilute gaseous H2S. A field test has also been completed that resulted in 70% immobilization of Cr(VI). The objective of this project is to characterize the interactions among H2S, the metal contaminants, and soil components. Understanding these interactions is needed to assess the long-term effectiveness of the technology and to optimize the remediation system.
【 预 览 】
Files | Size | Format | View |
---|---|---|---|
833522.pdf | 17KB | download |