Interfacial Reduction-Oxidation Mechanisms Governing Fate and Transport of Contaminants in the Vadose Zone

Deng, Baolin ; Thornton, Edward ; Cantrell, Kirk ; Olsen, Khris ; Amonette, James

University of Missouri--Columbia

关键词: Soils;    Hydrogen Sulfides;    54 Environmental Sciences;    Transport;   

DOI  :  10.2172/820957
RP-ID  :  DOE/ER/15011
RP-ID  :  FG07-99ER15011
RP-ID  :  820957

美国|英语

来源: UNT Digital Library

【 摘 要 】

Immobilization of toxic and radioactive metals in the vadose zone by In Situ Gaseous Reduction (ISGR) using hydrogen sulfide (H2S) is a promising technology for soil remediation. Earlier laboratory and field studies have shown that Cr(VI) can be effectively immobilized by treatment with dilute gaseous H2S. 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.