Kinetics of DCE and VC mineralization under methanogenic and Fe(III)-reducing conditions

Article Abstract:

Results from the microcosm experiments conducted on creek bed sediments indicated that microorganisms indigenous to the sediments contaminated with chlorinated ethenes exhibited significant mineralization of dichloroethene (DCE) and vinyl chloride (VC) under methanogenic and Fe(III)-reducing conditions. VC and DCE mineralization could be explained through Michaelis-Menten kinetics and first-order kinetics, respectively. Results also showed that the mineralization of chlorinated ethene is influenced by the specific contaminant and the prevailing redox conditions.

All Other Basic Organic Chemical Manufacturing, Industrial Organic Chemicals, Vinyl Chloride Monomer, Ethylene Dichloride, Vinyl chloride, Dichloroethylene, Vinylidene chloride

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Comparison of Eh and H2 measurements for delineating redox processes in a contaminated aquifer

Article Abstract:

Quantitative analysis of oxidation-reduction potentials (Eh) and levels of dissolved H2 was conducted in jet fuel-contaminated aquifers of Wurtsmith Air Force Base, MI. The Eh potentials of the contaminated aquifers were indicated by the presence of high H2 levels which is located in the center of the plume. The groundwater samples also exhibited high levels of oxygen, sulfate, methane and Fe(II) which act as potential electron acceptors for redox reactions.

Waste Management and Remediation Services, Water Pollution NEC, Analysis, Environmental aspects, Military bases, Michigan, Water, Underground, Water pollution, Groundwater, Pollutants, Oxidation-reduction reaction, Oxidation-reduction reactions, Hydrogen-ion concentration

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Factors affecting microbial 2,4,6-trinitrotoluene mineralization in contaminated soil

Article Abstract:

The effect of the environment on microbial mineralization of trinitrotoluene (TNT) in contaminated soil is investigated. The results showed that the addition of cellobiose and syringate had an inhibiting effect on the mineralization process. Microorganisms were capable of metabolizing TNT but they preferred other substances when possible. There were indications that aerobic and anaerobic conditions can enhance TNT degradation.

Cyclic Crude and Intermediate Manufacturing, Explosives, Trinitrotoluene, Soil disinfection, TNT (Trinitrotoluene), Dynamite

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