Semi-passive, chemical oxidation schemes for the long-term treatment of contaminants

Schwartz, Frank W. ; Lee, Eung Seok ; Ibaraki, Motomu

Ohio State University

关键词: Oxidation;    Mixtures;    Ground Water;    Computerized Simulation;    37 Inorganic, Organic, Physical And Analytical Chemistry;   

DOI  :  10.2172/835412
RP-ID  :  EMSP-86642-2003
RP-ID  :  FG07-02ER63487
RP-ID  :  835412

美国|英语

来源: UNT Digital Library

【 摘 要 】

This study aims to provide basic research on a new passive remediation concept based on an in situ chemical oxidation scheme. The first objective is to use laboratory experiments and computer simulations to develop a new semi-passive delivery system for the controlled release of KMnO4. A system is required to facilitate the slow release of KMnO4 into flowing ground water in a manner that maximizes the lateral spreading, and minimizes the number of wells. The second objective is to use laboratory experiments to assess whether chemical mixtures or cyclic chemical renovation schemes are capable of providing both contaminant destruction and plugging control. Preliminary experiments have identified compounds capable of delaying precipitation or dissolving precipitates. We have hopes that even in with a passive scheme that plugging can be controlled in the immediate vicinity of wells. The third objective is to evaluate the kinetics of interactions among treatment chemicals and the porous medium in order to optimize design. It is well known that natural, oxidizable compounds in aquifer materials utilize KMnO4. The well design requires knowledge concerning the fate and transport of KMnO4.