Biogeochemical reductive dechlorination
WebNov 4, 1988 · Abstract. Microorganisms from Hudson River sediments reductively dechlorinated most polychlorinated biphenyls (PCBs) in Aroclor 1242 under anaerobic … WebDec 9, 2009 · For example, the Air Force Center for Engineering and the Environment's biogeochemical reductive dechlorination (BiRD) technology combines a mulch barrier with hematite and gypsum to create an iron‐sulfide‐based reducing zone. Biodegradation under sulfate‐reducing conditions produces sulfide that combines with the hematite to …
Biogeochemical reductive dechlorination
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WebFeb 10, 2006 · Biogeochemical reductive dechlorination (BiRD) is a newly recognized method for the remediation or natural attenuation of chlorinated solvents. Chlorinated solvents are rapidly treated by abiotic reaction with reduced mineral iron sulfides. Iron sulfides are formed by naturally occurring sulfate-reducing bacteria when sufficient … WebJan 1, 2014 · Biogeochemical reductive dechlorination is primarily employed as a barrier technology, and to date these usually have been biowalls of mulch amended with gypsum and goethite. In Situ Redox Manipulation.In soil matrices with significant iron (>1 wt%), applications of moderately strong chemical reductants such as sodium dithionite or …
WebDan Leigh, P.G., CH.G presents the fundamentals of biologically mediated Enhanced Reductive Dechlorination (ERD). The discussion touches on the techniques used to establish the process and common problems that may be encountered. In addition, Mr. Leigh shares descriptions and application examples of the abiotic degradation pathway … WebBiostimulation is widely used to enhance reductive dechlorination of chlorinated ethenes in contaminated aquifers. However, the knowledge on corresponding biogeochemical …
WebTraductions en contexte de "métabolique réducteur" en français-anglais avec Reverso Context : Dans le cas de composés azoïques et diazoïques, un système d'activation métabolique réducteur peut s'avérer plus approprié (6) (13). WebAn experiment was conducted, in which a carbohydrate solution (molasses) was injected into groundwater wells at a site impacted with chlorinated VOC, e.g., perchloroethylene and trichloroethylene (TCE), to create strongly anaerobic and reducing conditions that might cause Enhanced Reductive Dechlorination (ERD).
WebCommonly, solvent plumes are remediated utilizing this biogeochemical process; however, in most cases the microbes have the electron acceptors but not the electron donors …
WebIdentification of abiotic and biotic reductive dechlorination in a chlorinated ethene plume after thermal source remediation by means of isotopic and molecular biology tools ... application of compound-specific isotopic analysis combined with molecular biology tools to evaluate which biogeochemical processes are taking place in an aquifer ... how does toyota use the waterfall methodologyWebJul 21, 2024 · In Situ. The most frequently used in situ bioremediation technique is enhanced reductive dechlorination that consists of the addition of organic substrates (electron donors) to ensure highly … photographer selling digital filesWebOct 6, 2001 · A recent article presented geochemical and microbial evidence establishing metabolic adaptation to and in-situ reductive dechlorination of trichloroethene (TCE) in a fractured dolomite aquifer. This study was designed to further explore site conditions and microbial populations and to explain previously reported enhancement of reductive … how does toyota save costWebMar 30, 2012 · We investigated the reductive dechlorination of Aroclor 1254 PCBs by a coplanar PCB-dechlorinating microbial community enriched from an actual site contaminated marine sediment of the Venice lagoon in sterile slurry microcosms of the same sediment suspended in its site water, i.e., under biogeochemical conditions that closely mime … how does toyota smartpath workWebMiscanthus × giganteus is a promising high-yielding perennial plant to meet growing bioenergy demands; however, the degree to which the soil microbiome affects its nitrogen cycling and subsequently, biomass yield remains unclear. how does toyota train their employeesWebOct 15, 2012 · The dechlorination kinetic rate constant of PCE in the nFeSCo(III) suspension (k(FeSCo(III))=0.188±0.003 h(-1)) was 145 times greater than that in nFeS suspension, showing a potential role of ≡S(2-)Co(II) as an electron transfer mediator to shuttle electrons for the enhanced reductive dechlorination. photographer south padre islandWebNov 20, 2006 · Biogeochemical reductive dechlorination (BiRD) is a new remediation approach for chlorinated aliphatic hydrocarbons (CAHs). The approach stimulates … photographer stand