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Isotopic fractionation during microbial decane degradation

Assessing bioremediation at hydrocarbon polluted sites with carbon and hydrogen isotopes

Isotopic fractionation during microbial decane degradation - Hager, Melanie - ISBN: 9783330502697
Prijs: € 64,90
Levertijd: 4 tot 6 werkdagen
Bindwijze: Boek, Paperback (04-10-2016)
Genre: Installatietechniek
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Beschrijving

Groundwater from a diesel fuel-contaminated site in Vienna, Austria, was treated in pilot-scale subsurface flow constructed wetlands. The study aims at quantifying the contribution of biodegradation to the total removal of diesel compounds by means of compound-specific isotope analysis (CSIA). This innovative approach requires a constant isotope fractionation during the microbial transformation reaction which leads to an enrichment of the heavy isotopes, i.e. 13C and 2H, in the remaining pollutant. Filter material and/or groundwater was incubated in laboratory microcosms and the aerobic degradation of n-decane, which was chosen as model compound for diesel hydrocarbons, was monitored. Isotope fractionation was absent in water saturated microcosms because only minor n-decane biodegradation took place. During n-decane biodegradation in moist filter material, on the other hand, small but variable isotopic fractionation factors were found. The different experimental set-ups give indications how mass transfer limitations of hydrophobic molecules might mask isotopic fractionation and the consequences for field applications of CSIA are discussed in detail.

Details

Titel: Isotopic fractionation during microbial decane degradation
auteur: Hager, Melanie
Mediatype: Boek
Bindwijze: Paperback
Taal: Engels
Aantal pagina's: 192
Uitgever: AV Akademikerverlag
Publicatiedatum: 2016-10-04
NUR: Installatietechniek
Afmetingen: 220 x 150 x 11
Gewicht: 305 gr
ISBN/ISBN13: 9783330502697
Intern nummer: 36767863

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