Catalytic redox reactions of inorganic species in aquatic environments
Conference
·
OSTI ID:126340
- Johns Hopkins Univ., Baltimore, MD (United States)
Subsurface environments contain inorganic and organic constituents that serve as stoichiometric oxidants and reductants towards metal pollutants. Equally important, subsurface environments contain dissolved metal ions and metal-containing mineral surfaces that can catalyze these redox reactions. Catalysis can arise from a number of mechanisms: (i) Metal coordination to one of the reactants may increase its reactivity; (ii) Metal coordination to both reactants may facilitate encounter and subsequent electron transfer; (iii) Redox-active metals may serve as electron shuttles between reductant and oxidant. To illustrate these mechanisms, the reduction of hexavalent chromium by organic reductants will be discussed. Under the conditions found in soils and aquifer sediments, rates of dissolved metal ion and surface-catalyzed chromium reduction may equal or surpass rates of uncatalyzed reaction.
- OSTI ID:
- 126340
- Report Number(s):
- CONF-950402--
- Country of Publication:
- United States
- Language:
- English
Similar Records
Mechanisms of inorganic and organometallic reactions: vol. 2
The removal of hexavalent chromium from water by ferrous sulfate
THE ROLE OF BIOGENIC SOLIDS IN THEREDUCTIVE STABILIZATION OF METAL CONTAMINATS: INFLUENCES ONMICROBIAL VERSUS CHEMICAL PATHWAYS AND REACTION PRODUCTS
Book
·
Sat Dec 31 23:00:00 EST 1983
·
OSTI ID:5076018
The removal of hexavalent chromium from water by ferrous sulfate
Conference
·
Sat Dec 30 23:00:00 EST 1995
·
OSTI ID:250929
THE ROLE OF BIOGENIC SOLIDS IN THEREDUCTIVE STABILIZATION OF METAL CONTAMINATS: INFLUENCES ONMICROBIAL VERSUS CHEMICAL PATHWAYS AND REACTION PRODUCTS
Technical Report
·
Sat Aug 31 00:00:00 EDT 2002
·
OSTI ID:842222