Aerobic Biodegradation Of Vinyl Chloride

Less information is available on the aerobic biodegradation of vinyl chloride.

Aerobic biodegradation of vinyl chloride.

Aerobic bioremediation of 1 2 dichloroethane 1 2 dca and vinyl chloride vc was evaluated at field scale in a layered silty and fine sand anaerobic aquifer. Role of acetogens in anaerobic oxidation of vinyl chloride. Without a demonstrable mechanism for in situ biodegradation of chloroethenes to non toxic. Co 2 concentrations and temperature were used to identify factors controlling vc biodegradation.

Lower chlorinated compounds such as cis dichloroethene cis dce and vinyl chloride. Aerobic biodegradation is the breakdown of organic contaminants by microorganisms when oxygen is present. 6 isolated amycobacterium strain which used vinyl chloride as the sole carbon and energy. Microbial oxidation of vinyl chloride under iron reducing conditions.

Orc treatment of vinyl chloride results from controlled laboratory studies and field applications support the ability of orc to effectively enhance the biodegradation of vinyl chloride. Project remediation related activities. More specifically it refers to occurring or. Biotransformation of vinyl chloride under methanogenic conditions has been reported although degradation was shown to be relatively slow and incomplete 1 4.

A highly enriched aerobic culture that degrades vc as a growth substrate was obtained from a chloroethene contaminated aquifer material. Rdx biodegradation assessment naval submarine base bangor washington. Anaerobic oxidation of vinyl chloride under humic acids reducing conditions. Lower chlorinated compounds such as cis dichloroethene cis dce and vinyl chloride vc often accumulate in chloroethene contaminated aquifers due to incomplete reductive dechlorination of higher chlorinated compounds.

The investigation provided multiple lines of evidence that demonstrated aerobic biodegradation of vinyl chloride vc was occurring in the vadose zone i above the on site source zone and ii above the downgradient off site groundwater plume location. Accumulation with anaerobic conditions disqualified aerobic microbial metabolism as a significant mechanism for bioremediation of these compounds under in situ conditions. Vinyl chloride vc aerobic biodegradation in the vadose zone was demonstrated. Aerobic biodegradation of vc was regulated by the temperature of the vadose zone.

Maximum concentrations of 1 2 dca 2 g l and vc 0 75 g l in groundwater were within 25 and 70 of pure compound solubility respectively. Data from both the on site and off site locations were consistent in showing substantially. Data showed vc isotopic enrichment co 2 isotopic depletion vc degrading bacteria.