Biodegradation and Bioremediation of Petroleum Pollutants in Soil
During bioremediation, petroleum hydrocarbons are converted by naturally occurring or indigenous soil microorganisms to carbon dioxide, water, bacterial cells (biomass), and humic materials. Numerous factors are known to affect both the rate and the extent of hydrocarbon biodegradation in contaminated soils. These include soil properties such as moisture content, aeration, nutrient status, pH, and temperature as well as waste characteristics such as the concentration and molecular structure of hydrocarbon compounds or classes, the presence of inhibitors and cometabolic substrates, and the degree of contaminant sequestration which often leads to serious bioavailability limitations, particularly in aged soils. It is the objective of this chapter to outline a strategy for optimizing the hydrocarbon bioremediation process by adjusting the various operational parameters so that none of them become a limiting factor during treatment.
- Research Organization:
- Pacific Northwest National Laboratory (PNNL), Richland, WA (US)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-76RL01830
- OSTI ID:
- 908506
- Report Number(s):
- PNNL-SA-39097; AC1015000
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
09 BIOMASS FUELS
AERATION
Aged Soils
BIODEGRADATION
BIOMASS
BIOREMEDIATION
CARBON DIOXIDE
Environmentally Acceptable Endpoints
HYDROCARBONS
Hydrocarbon biodegradation
MICROORGANISMS
MOISTURE
MOLECULAR STRUCTURE
NUTRIENTS
Optimal Conditions
PETROLEUM
POLLUTANTS
SOILS
SUBSTRATES
WASTES
polynuclear aromatic hydrocarbon (PAH)