Dechlorination of trichloroethene in aqueous solution using Fe0

Article Abstract:

Ethene is the principal product of degradation of aqueous trichloroethene (TCE) in contact with granular iron metal. This was gleaned from the results of flow-through column tests to investigate the products of the degradation process. Ethane was also a product, as well as significantly smaller amounts of other C1-C4 hydrocarbons. Results also indicated that the degradation process is pseudo-first-order and that the rate constant is relatively insensitive to the initial concentration of TCE over the range from about 1.3 to 61 mg./L.

Biodegradation

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Surfactant-enhanced remediation of a trichloroethene-contaminated aquifer. 1. transport of Triton X-100

Article Abstract:

Results from laboratory and field experiments show that Triton X-100, a nonionic surfactant, sorbs strongly to the trichloroethene-contaminated aquifer soil at concentrations less than 400 mg/L. Results show that Triton X-100's sorption to the aquifer solids is slow compared to advective and dispersive transport. Surfactant remediation procedures, however, will prove difficult due to sorption rate limitations.

Surface active agents, Surface Active Agent Manufacturing

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Soil heating for enhanced remediation of chlorinated solvents: a laboratory study on resistive heating and vapor extraction in a silty, low-permeable soil contaminated with trichloroethylene

Article Abstract:

Results revealed that trichloroethylene (TCE) removal is best achieved through soil heating. Thermally enhanced remediation of TCE for 37 days has reduced TCE from 35 to 0.072 g, reflecting a 99.8% mass removal. The method could prove to be cost-effective and efficient, allowing in-situ thermal cleanups and very high removal efficiency for both volatile and semivolative organics.

Research and Development in the Physical, Engineering, and Life Sciences, Pollution R&D NEC, Pollution control research, Soil heating

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