Advanced SearchSearch Tips
Development of Activity Enhanced Zero Valent Metals for Permeable Reactive Barrier
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
Development of Activity Enhanced Zero Valent Metals for Permeable Reactive Barrier
Kim, Young-Hun; Kim, Myung-Chul;
  PDF(new window)
The dechlorination of chlorinated methanes by iron powder and palladium coated iron (Pd/Fe) was studied in batch experiments. Iron powder dechlorinated carbon tetrachloride (CT) with a half-life of 4 days. Three chloromethane was found as major product and less chlorinated daughters. Mass balance found was to be about 93-99%. Pd/Fe showed very enhanced reactivity for CT in comparing with plain iron. The major dechlorination products of CT were also less chlorinated methanes with Pd/Fe. Pd/Fe also degrade the produced less chlorinated compounds. Sequential reactions were occurred on Pd/Fe. As the Pd/Fe content increased, the reaction rate was increased linearly.
Zero-Valent Metals;Reduction;Dechlorination;Carbon tetrachloride;Palladium;
 Cited by
Johnson, T.L., M.M. Scherer, and P.G. Tratnyek, 1996, Kinetics of halogenated organic compound degradation by iron metal, Environ. Sci. Technol., 30, 2634-2640. crossref(new window)

Stiles, M., 1994, Nickel complexes as soluble catalysts for reductive dehalogenation of aromatic halides, J. Org. Chem., 59, 5381-5385. crossref(new window)

Cheng, I.F., Q. Fernando, and N. Korte, 1997, Electronchemical dechlorination of 4-chlorophenol to phenol, Environ. Sci. Technol., 31, 1074-1078. crossref(new window)

Schreier, C.G. and M. Reinhard, 1995, Catalytic hydrodehalogenation of chlorinated ethylenes using palladium and hydrogen for the treatment of contaminated water, Chemosphere, 31, 3475-3487. crossref(new window)

Appleton, E.L., 1996, A nickel-iron wall against contaminated groundwater. Environ. Sci. Technol., 30, 536A-539A. crossref(new window)

Fennelly, J.P. and A.L. Roberts, 1998, Reaction of 1,1,1-trichloroethane with zero-valent metals and bimetallic reductants, Environ. Sci. Technol., 32, 1980-1988. crossref(new window)

Grittini, C., 1997, Rapid reductive dechlorination of environmentally hazardous aromatic compounds and pesticides, The University of Arizona, Tucson, 170pp.

Kovenklioglu, S., Z. Cao, D. Shah, R.J. Farrauto, and E.N. Balko, 1992, Direct catalytic hydrodechlorination of toxic organics in wastewater, AIChE J., 38, 1003-1012. crossref(new window)

Muftikian, R., Q. Fernando, and N. Korte, 1995, A method for the rapid dechlorination of low molecular weight chlorinated hydrocarbons in water, Water Res., 29, 2434-2439. crossref(new window)

Sivavec, T.M., P.D. Mackenzie, and D.P. Horney, 1997, Effect of Site Groundwater on Reactivity of Bimetallic Media: Deactivation of Nickel-Plated Granular Iron. 213th Natl Meet., Am. Chem. Soc., Div. Environ. Chem., 83-85pp.

Clark, W.M., 1960, Oxidation-Reduction potentials of organic systems, The Williams & Wilkins Company, Baltimore.

Kim, Y.H., 1999, Reductive dechlorination of chlorinated aliphatic and aromatic compounds using zero valent metals: modified metals and electron mediators, Texas A&M University, College Station, 160pp.

APHA, 1995, Standard method for the examination of water and wastewater, APHA, AWWA, WEF, Washington, D.C..

Wan, C., Y.H. Chen, and R. Wei, 1999, Dechlorination of chloromethanes on iron and palladium-iron bimetallic surface in aqueous systems, Environ. Toxicol. Chem., 18, 1091-1096. crossref(new window)