Biological reductive dechlorination
WebOct 1, 1989 · To sustain reductive dechlorination of PCE and TCE, it was necessary to supply an electron donor; methanol was the most effective, although hydrogen, formate, … WebNov 4, 1988 · These dechlorination products are both less toxic and more readily degraded by aerobic bacteria. These results indicate that reductive dechlorination may be an …
Biological reductive dechlorination
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WebThe optimal 2,4,6-TCP reductive dechlorination rate (24.2 mu M/d) was obtained when a small amount of lactate (2 mM) was added, and the generation of H-2 and CH4 were accompanied due to the biological fermentation and methanogenesis. WebDec 1, 2007 · Biological reductive dechlorination produces innocuous ethane or CO 2. Inorganics: Perchlorate; Chlorate; Nitrate; Nitrite; Bromate; Biological reduction produces innocuous end products (Cl–, N 2, Br–, H 2 O), thus eliminating the generation of a contaminated concentrate stream. Selenate;
WebDechlorination often occurs very slowly and under electron donor, and nutrient limiting conditions in the subsurface. Meanwhile, other co-occurring terminal electron accepting … WebNov 20, 2024 · Efficient remediation of river sediments contaminated by polychlorinated biphenyls and hexachlorobenzene by coupling in situ phase-inversion emulsification and …
Webreductive dechlorination processes towards sediment-carried PCBs whereas the other 4 microcosms (2 biologically active and 2 autoclave-sterilized) were spiked with 3,3’,4,4 ... WebEnhanced Reductive Dechlorination is accomplished by adding a carbon source to the saturated media that provides a means to complete the reductive dechlorination process in an expedited time frame. ... · Biological Oxygen Demand – This parameter collected in the baseline sampling and in subsequent sampling will determine how much ...
WebSep 24, 2006 · The investigation of the biological reductive dechlorination of chlorobenzenes by methanogenic consortia in river sediments is dependent on reliable analytical procedures. Two different extraction methods for the determination of chlorobenzenes from sediment samples were developed. Lower chlorinated benzenes …
WebAug 1, 1991 · Anaerobic methanol-PCE enrichment cultures which proved capable of dechlorinating high concentrations PCE to ethene were developed and suggest that reductive dechlorination could be exploited for bioremediation of PCE-contaminated sites. Tetrachloroethene, also known as perchloroethylene (PCE), is a common groundwater … in 1837 the university of michigan becameWebDehalococcoides (DHC) is the only known bacterial group capable of complete reductive dechlorination of PCE to ethene. Lu et al. have proposed a Dehalococcoides concentration of 1 x 10^4 cells/mL as a screening criterion to identify sites where biological reductive dechlorination is predicted to proceed at “generally useful” rates ... in 1850 lucretia mott publishedWebJan 1, 2000 · A significant level of enhanced biological reductive dechlorination was demonstrated at a commercial dry cleaning facility in Orlando, Florida. Under the … dutch natural gas etfWebDec 31, 1995 · Enhanced reductive dechlorination (ERD) has rapidly become a remedy of choice for use on chlorinated solvent contamination when site conditions allow. With this … in 1846 congressman david wilmot proposeddutch naval rank insigniaIn organochlorine chemistry, reductive dechlorination describes any chemical reaction which cleaves the covalent bond between carbon and chlorine via reductants, to release chloride ions. Many modalities have been implemented, depending on the application. Reductive dechlorination is often … See more Dechlorination is a common reaction in organic synthesis. Usually only stoichiometric amounts of dechlorinating agent are used. A classic Ullmann reaction is the conversion of 2-chloronitrobenzene into 2,2'-dinitro See more The electrochemical reduction of chlorinated chemicals such as chlorinated hydrocarbons and chlorofluorocarbons can be carried out by electrolysis in appropriate solvents, such as … See more Vicinal reduction involves the removal of two halogen atoms that are adjacent on the same alkane or alkene, leading to the formation of an additional carbon-carbon bond. Biological reductive dechlorination is often effected by certain … See more dutch naval historyWebAug 30, 2024 · The low-chlorinated compounds formed after reductive dechlorination could be further aerobically degraded and completely mineralized. This paper reviews the recent advances in biological degradation of PCBs, introduces the functional bacteria and enzymes involved in the anaerobic and aerobic degradation of PCBs, and discusses the … dutch navy ship names