A method for the rapid dechlorination of low molecular weight chlorinated hydrocarbons in water

摘要: 1,1,2-Trichloroethylene (TCE), 1,1-dichloroethylene, cis and trans-1,2-dichloroethylene tetrachloroethylene (PCE), at concentrations of 20 ppm in aqueous solutions were rapidly hydrodechlorinated to ethane (in a few minutes), on the surface palladized iron batch experiments that performed closed vials. No intermediate reaction products such as 1,2-dichloroethylenes vinyl chloride detected > 1 either headspace or solution. The chloromethanes, CCl4, CHCl3 CH2Cl2 also dechlorinated methane iron; CCl4 was minutes, CHCl3, less than an hour CH2Cl2, 4–5 h. These results indicate above-ground treatment method can be designed for groundwater contaminated with low molecular weight chlorinated hydrocarbons.