Results 221 to 230 of about 4,389,509 (277)

Reductive dechlorination of atrazine catalyzed by metalloporphyrins

Chemosphere, 2009
Atrazine (2-chloro-4-(ethylamine)-6-(isopropylamine)-s-triazine) is a widely used herbicide which is considered a persistent groundwater contaminant. Its selective transformation mediated by cobalt or nickel porphyrins was studied in aqueous solutions at room temperature and ambient pressure. Several metalloporphyrins were examined as catalysts for the
Elza, Nelkenbaum, Ishai, Dror, Brian, Berkowitz   +2 more
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Reductive Dechlorination of DDT by Heated Liver

Nature New Biology, 1972
DDT undergoes reductive dechlorination in vertebrate liver after death and in liver preparations incubated in anaerobic conditions. The product, DDD, p, p′-dichlorodiphenyldichloro-ethane, is an important environmental pollutant and has been found in tissues of many animals1, including human liver2.
K A, Hassall, T J, Forrest
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Photosensitized reductive dechlorination of chloroaromatic pesticides

Chemosphere, 1995
Abstract Photosensitized reductive degradation of chlorinated pesticides : 2,5-dichloro 1,4-dimethoxybenzene “chloroneb”, 1,1,1-trichloro-2,2-bis(4-chorophenyl) ethane “4,4′ DDT” and 2(4-chloro-2-methylphenoxy) methyl ethanoate “MCPA methyl ester” was studied in ethanol/water mixture as a solvent with N,N,N′,N′ tetramethylbenzidine as a ...
A. Galadi, H. Bitar, M. Chanon, M. Julliard   +3 more
openaire   +1 more source

Enhancing Reductive Dechlorination With Nutrient Addition

Remediation Journal, 2013
AbstractEnhanced reductive bioremediation (ERB) of halogenated organics has become widely accepted and implemented to reduce risks to human health and the environment posed by these compounds. The family of chlorinated ethenes (e.g., trichloroethene) is among the most common contaminants treated using ERB techniques.
Troy Fowler, Kimberly Reinauer
openaire   +1 more source

Kinetics of the Microbial Reductive Dechlorination of Pentachloroaniline

Environmental Science & Technology, 2006
The microbial reductive dechlorination kinetics of pentachloroaniline (PCA) and less chlorinated anilines (CAs) were investigated with a mixed, fermentative/ methanogenic culture. Batch dechlorination assays were performed with all available CAs at an initial concentration of 3 microM, and an incubation temperature of 22 degrees C.
Didem Okutman, Tas, Ivy N, Thomson, Frank E, Löffler, Spyros G, Pavlostathis   +3 more
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Abiotic reductive dechlorination of chlorinated ethylenes by soil

Chemosphere, 2004
Abiotic reductive dechlorination of chlorinated ethylenes by soil in anaerobic environments was characterized to improve knowledge of the behavior of chlorinated ethylenes in natural systems, including systems modified to promote attenuation of contaminants.
Lee, W Lee, Woojin, Batchelor, B
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Reductive dechlorination of TCE by zero valent bimetals

Environmental Technology, 2003
Six zero valent bimetal combinations were tested for trichloroethene (TCE) dechlorination. Palladium, nickel, and copper were coated at 500 mg kg(-1) or less onto zero valent iron, producing Pd/Fe, Ni/Fe, and Cu/Fe bimetals, and zinc, producing Pd/Zn, Ni/Zn, and Cu/Zn bimetals. The order of reactivity of the six bimetals and two metals based on surface
Y H, Kim, E R, Carraway
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Reductive Dechlorination of DDT to DDD by Yeast

Science, 1963
Labeled DDD [1,1-dichloro-2,2-bis(p-chlorophenyl)-ethane] was formed from C 14 -labeled DDT in the presence of yeast. The formation of DDD from DDE [1,1-dichloro-2,2-bis ( p -chlorophenyl)-ethylene] was not observed, indicating that a reductive dechlorination of DDT occurs.
B J, KALLMAN, A K, ANDREWS
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Regioselectivity of dechlorination: Reductive dechlorination of polychlorobiphenyls by polymethylhydrosiloxane-alkali metal

Journal of Organometallic Chemistry, 1992
Abstract Polychlorobiphenyls are completely dechlorinated to biphenyl by a polymethylhydrosiloxane-alkali metal system at ambient conditions. Dechlorination proceeded via the formation of a polychlorobiphenyl radical anion, which cleaved with a regioselectivity similar to that normally observed in nucleophilic substitution of polyhaloarenes.
openaire   +1 more source

Well-defined nanoporous palladium for electrochemical reductive dechlorination

Physical Chemistry Chemical Physics, 2011
Well-defined nanoporous palladium (np-Pd) fabricated by a modified electrochemical dealloying procedure is demonstrated to be an excellent electrocatalyst material for reductive degradation of both carbon tetrachloride and chlorobenzene.
Wenjing, Li, Houyi, Ma, Lihui, Huang, Yi, Ding   +3 more
openaire   +2 more sources