Pd-Catalyzed TCE dechlorination in groundwater: Solute effects, biological control, and oxidative catalyst regeneration

Article Abstract:

An evaluation of the dechlorination of trichloroethylene in groundwater using palladium as a catalyst.

Statistical Data Included, Methods, Usage, Illustration

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Pd-catalyzed TCE dechlorination in water: Effect of (H(sub2)(aq)) and H(sub2)-utilizing competitive solutes on the TCE dechlorination rate and product distribution

Article Abstract:

Researchers at Stanford University determined the TCE dechlorination efficiency in palladium-based in-well treatment reactors is affected by the aqueous-phase H(sub2) (H(sub2)(aq)) that palladium-catalyzed TCE dechlorination rate increased and production of chlorinated intermediates and coupling product can increase in the presence of H(sub2)-utilizing competing solutes and under H(sub2)-limited conditions.

Waste Management and Remediation Services, Water Pollution, Environmental aspects

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Counter-diffusion of isotopically labeled trichloroethylene in silica gel and geosorbent micropores: column results

Article Abstract:

Desorption rates of volatile organic chemicals progress at rates that can be calculated. Researchers comparied the rates of exchange between deuterated trichloroethylene and nondeuterated TCE in silica gel, and in cla/silt fraction. Researchers found that diffusion in their experiments were counter-directional (counter-diffusion). These results have implications for clean up of contaminated sites, when chemical mixtures exist in the subsoil, where these slow sorption processes take place.

Research and Development in the Physical, Engineering, and Life Sciences, Chemistry, Chemical industry, Soil pollution

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