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Reductive dehalogenation of chlorinated methanes by iron metal.
The reduction of chlorinated methanes in batch model systems appears to be coupled with oxidative dissolution (corrosion) of the iron through a largely diffusion-limited surface reaction. Expand
Kinetics of Halogenated Organic Compound Degradation by Iron Metal
A combination of new and previously reported data on the kinetics of dehalogenation by zero-valent iron (Fe0) has been subjected to an analysis of factors effecting contaminant degradation rates.Expand
Characterization and properties of metallic iron nanoparticles: spectroscopy, electrochemistry, and kinetics.
Two widely studied nano-Fe0 preparations are characterized: one synthesized by reduction of goethite with heat and H2 and the other by reductive precipitation with borohydride, which exhibit corrosion potentials that are more negative than nano-sized Fe2O3, Fe3O4, micro-sizedFe0, or a solid Fe0 disk. Expand
Oxidation of chlorinated ethenes by heat-activated persulfate: kinetics and products.
The kinetics and products of chlorinated ethene oxidation with heat-activated persulfate and the temperature dependence of other degradation pathways are compared and advantages to combining these technologies are explored. Expand
Nanotechnologies for environmental cleanup
Among the many applications of nanotechnology that have environmental implications, remediation of contaminated groundwater using nanoparticles containing zero-valent iron (nZVI) is one of the mostExpand
Natural organic matter enhanced mobility of nano zerovalent iron.
Simulation of transport distances during injection of nanometer-sized zerovalent iron in porous media with filtration theory and experimental results from the column experiments reported here show that the increased mobility due to NOM combined with the decrease in Mobility due to decreased velocity with distance from an injection well could produce an injection zone that is wide enough to be useful for remediation but small enough to avoid reaching unwanted receptors. Expand
Reduction of Nitro Aromatic Compounds by Zero-Valent Iron Metal
The properties of iron metal that make it useful in remediation of chlorinated solvents may also lead to reduction of other groundwater contaminants such as nitro aromatic compounds (NACs).Expand
Kinetics of contaminant degradation by permanganate.
The kinetics of oxidation of 24 contaminants-many for which data were not previously available were measured, finding the kinetics to be first-order with respect to both contaminant and MnO4- concentrations. Expand
Persulfate persistence under thermal activation conditions.
Three sets of Arrhenius parameters are computed that describe the rate of persulfate decomposition in homogeneous solutions over a wide range of temperature and pH and demonstrate that once the oxidant demand is met, reaction rates return to values near those observed in the homogeneous solution case. Expand
Effects of natural organic matter, anthropogenic surfactants, and model quinones on the reduction of contaminants by zero-valent iron.
The results suggest that a variety of organic surface-active substances might enhance or inhibit contaminant degradation, depending on the degree to which they promote solubilization, sorption, etc. and/or reaction. Expand