Evaluation of biological treatability of soil contaminated with manufactured gas plant waste
- Utah State Univ., Logan, UT (United States)
- Electric Power Research Institute, Palo Alto, CA (United States)
The biological treatability of subsurface soil contaminated with manufactured gas plant (MGP) waste was evaluated. Mineralization assays incorporating {sup 14}C-phenanthrene were used to evaluate the biotransformation potential of indigenous microorganisms at the site. Multi-phase laboratory microcosms were used to evaluate the interphase transfer potential and chemical mass distribution of phenanthrene mineralization was influenced by nutrient addition and by the amount of contamination. The chemical mass distribution of {sup 14}C-phenanthrene indicated that volatilization may be an important transport mechanism for chemicals residing in, or migrating to the vadose zone of soil. Following removal of the coal-tar waste source at the site, the toxicity of water soluble extracts of the site soil decreased to a non-toxic response based upon Microtox{trademark} assay results. Parent compound compound concentrations at the site also decreased with time subsequent to source removal. Results of this study indicate that natural in situ bioremediation may be an important treatment process at a former manufactured gas plant waste site in New York. 21 refs., 5 figs., 4 tabs.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 508288
- Journal Information:
- Hazardous Waste and Hazardous Materials, Journal Name: Hazardous Waste and Hazardous Materials Journal Issue: 3 Vol. 12; ISSN 0882-5696; ISSN HWHME2
- Country of Publication:
- United States
- Language:
- English
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