thumbnail

Enhanced CAH dechlorination in a low permeability, variably-saturated medium

By:
, , , , , , ,
Edited by:
Gavaskar A.R.Chen A.S.C.

Links

  • The Publications Warehouse does not have links to digital versions of this publication at this time

Abstract

An innovative pilot-scale field test was performed to enhance the anaerobic reductive dechlorination (ARD) of chlorinated aliphatic hydrocarbons (CAHs) in a low permeability, variably-saturated formation. The selected technology combines the use of a hydraulic fracturing (fracking) technique with enhanced bioremediation through the creation of highly-permeable sand- and electron donor-filled fractures in the low permeability matrix. Chitin was selected as the electron donor because of its unique properties as a polymeric organic material and based on the results of lab studies that indicated its ability to support ARD. The distribution and impact of chitin- and sand-filled fractures to the system was evaluated using hydrologic, geophysical, and geochemical parameters. The results indicate that, where distributed, chitin favorably impacted redox conditions and supported enhanced ARD of CAHs. These results indicate that this technology may be a viable and cost-effective approach for remediation of low-permeability, variably saturated systems.

Additional Publication Details

Publication type:
Conference Paper
Publication Subtype:
Conference Paper
Title:
Enhanced CAH dechlorination in a low permeability, variably-saturated medium
ISBN:
1574771329
Year Published:
2002
Language:
English
First page:
995
Last page:
1003
Number of Pages:
9
Conference Title:
Proceedings of the Third International Conference on Remediation of Chlorinated and Recalcitrant Compounds
Conference Location:
Monterey, CA.
Conference Date:
20 May 2002 through 23 May 2002