Logo du site
  • English
  • Français
  • Se connecter
Logo du site
  • English
  • Français
  • Se connecter
  1. Accueil
  2. Université de Neuchâtel
  3. Publications
  4. Intrinsic bioremediation of a petroleum hydrocarbon-contaminated aquifer and assessment of mineralization based on stable carbon isotopes
 
  • Details
Options
Vignette d'image

Intrinsic bioremediation of a petroleum hydrocarbon-contaminated aquifer and assessment of mineralization based on stable carbon isotopes

Auteur(s)
Bolliger, C
Höhener, P
Hunkeler, Daniel 
Centre d'hydrogéologie et de géothermie 
Häberli, K
Zeyer, J
Date de parution
1999
In
Biodegradation, Kluwer Academic, 1999/10//201-217
Mots-clés
  • ground water
  • intrinsic bioremediation
  • natural gradient tracer test
  • petroleum hydrocarbons
  • redox processes
  • stable carbon isotopes
  • ground water

  • intrinsic bioremediat...

  • natural gradient trac...

  • petroleum hydrocarbon...

  • redox processes

  • stable carbon isotope...

Résumé
This study presents a stepwise concept to assess the in situ microbial mineralization of petroleum hydrocarbons (PHC) in aquifers. A new graphical method based on stable carbon isotope ratios (δ<sup>13</sup>C) was developed to verify the origin of dissolved inorganic carbon (DIC). The concept and the isotope method were applied to an aquifer in Studen, Switzerland, in which more than 34,000 liters of heating oil were accidentally released. Chemical analyses of ground water revealed that in this aquifer locally, anaerobic conditions prevailed, and that PHC mineralization was linked to the consumption of oxidants such as O<sub>2</sub>, NO<sub>3-</sub> , and SO<SUB>4</SUB><sup>2-</sup> and the production of reduced species such as Fe<SUp>2+</SUp>, Mn<sup>2+</sup>, H<sub>2</sub>S and CH<sub>4</sub>. However, alkalinity and DIC balances showed a quantitative disagreement in the link between oxidant consumption and DIC production, indicating that chemical data alone may not be a reliable assessment tool. δ<sup>13</sup>C ratios in DIC have been used before for bioremediation assessment, but results were reported to be negatively influenced by methanogenesis. Using the new graphical method to display δ<sup>13</sup>C data, it was possible to identify anomalies found in methanogenic monitoring wells. It could be shown that 88% of the DIC produced in the contaminated aquifer originated from microbial PHC mineralization. Thus, the new graphical method to display δ<sup>13</sup>C ratios appears to be a useful tool for the assessment of microbial hydrocarbon mineralization in a complex environment.
Identifiants
https://libra.unine.ch/handle/123456789/4391
_
10.1023/A:1008375213687
Type de publication
journal article
Dossier(s) à télécharger
 main article: Bolliger_C-Intrinsic_bioremediation_of_a_petroleum-20170713.pdf (829.27 KB)
google-scholar
Présentation du portailGuide d'utilisationStratégie Open AccessDirective Open Access La recherche à l'UniNE Open Access ORCIDNouveautés

Service information scientifique & bibliothèques
Rue Emile-Argand 11
2000 Neuchâtel
contact.libra@unine.ch

Propulsé par DSpace, DSpace-CRIS & 4Science | v2022.02.00