Biogeochemical reductive dechlorination
WebSITUATIONAL SUMMARY. In Situ Chemical Reduction (ISCR) using ELS ® Microemulsion was compared to Enhanced Reductive Dechlorination (ERD) to treat groundwater affected by trichloroethene (TCE). Two pilot tests were conducted that compared the rates of contaminant degradation as well as other biogeochemical processes of both processes. 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 …
Biogeochemical reductive dechlorination
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WebNov 15, 2001 · Straight chain hydrocarbons were extracted from the dolomite previously found to stimulate reductive dechlorination; these were particularly depleted in hexadecane (HD). Thus, we hypothesized that HD and related hydrocarbons might be anaerobically respired and serve both as the source of on-site DIC and support …
WebNov 20, 2006 · Biogeochemical reductive dechlorination (BiRD) is a new remediation approach for chlorinated aliphatic hydrocarbons (CAHs). The approach stimulates … WebOct 6, 2001 · A recent article presented geochemical and microbial evidence establishing metabolic adaptation to and in-situ reductive dechlorination of trichloroethene (TCE) in …
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). WebOct 6, 2016 · Biostimulation is widely used to enhance reductive dechlorination of chlorinated ethenes in contaminated aquifers. However, the knowledge on corresponding biogeochemical responses is limited. In this study, glycerol was injected in an aquifer contaminated with cis -dichloroethene (cDCE), and geochemical and microbial shifts …
WebHowever, the exact reaction mechanism underlying each step of reductive dechlorination remains at the stage of hypothesis where three different reaction mechanisms have so far been proposed. As molecules containing light isotopes are generally degraded faster than molecules containing heavy isotopes due to energetic reasons, the isotopic ...
WebJan 1, 2003 · Biogeochemical Reductive Dechlorination (BiRD) is an alternative to bio- stimulation processes used for the treatment of chlorinated aliphatic hydrocarbons (CAHs). BiRD is a new treatment concept ... sparc t5 serverWebAn experiment was conducted, in which a carbohydrate solution (molasses) was injected into groundwater wells at a site impacted with chlorinated VOC, e.g., perchloroethylene … sparc t4 serversWebFeb 1, 2012 · Abiotic agents that may enhance the reductive dechlorination of chlorinated ethanes and ethenes are zero-valent metals, sulphide minerals or green rusts. At some sites, permanganate and … sparc t7-4WebReductive dechlorination is a common anaerobic biodegradation mechanism for chlorinated aromatic compounds. This research tested the hypothesis that the rate of reductive dechlorination reactions depend upon the apparent redox potential, or EH, of the reaction medium. ... Coupling to the Biogeochemical Matrix tece bimWebIn situ biogeochemical transformation (ISBGT), or biogeochemical reductive dechlorination, is the process of stimulating abiotic reduction of chlorinated solvents by formation and reaction with iron sulfides. Iron … tececsaWebApr 28, 2024 · Biogeochemical Reductive Dechlorination (BiRD). BiRD is the term coined by Kennedy et al. to describe the process of stimulating abiotic reduction of chlorinated solvents by forming reactive iron sulfides. … sparctheater.orgWebA fully kinetic biogeochemical model of sequential reductive dechlorination (SERD) occurring in conjunction with lactate and propionate fermentation, iron reduction, sulfate reduction, and methanogenesis was developed. Production and consumption of molecular hydrogen (H2) by microorganisms have been modeled using modified Michaelis–Menten … tecebem