Biodegradation testing of bitumen
An estimate of the rate of biodegradation of bituminous material is necessary to predict the long-term stability of low- and intermediate-level waste solidified using bitumen. Data from a series of scoping experiments have been analyzed to determine the rate of degradation of blown bitumen samples under a variety of conditions. Among the variables investigated were the effect of soil type, moisture, sample surface area and microbial strain. The rate of degradation was measured by monitoring metabolic CO/sub 2/ release. Using this data it was found that, for degradation in soil, a mean rate of 5.5 x 10..mu../sup 4/ cm/y represented all data to within a factor of about two. This mean rate is nearly that for distilled bitumen samples measured by other workers.
- Research Organization:
- Brookhaven National Lab., Upton, NY (USA); Nuclear Regulatory Commission, Washington, DC (USA)
- DOE Contract Number:
- AC02-76CH00016
- OSTI ID:
- 6825903
- Report Number(s):
- BNL-NUREG-38999; CONF-861207-57; ON: TI87004609
- Resource Relation:
- Conference: Materials Research Society fall meeting, Boston, MA, USA, 1 Dec 1986
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
02 PETROLEUM
BITUMENS
BIODEGRADATION
CARBON DIOXIDE
INTERMEDIATE-LEVEL RADIOACTIVE WASTES
LOW-LEVEL RADIOACTIVE WASTES
MOISTURE
RADIOACTIVE WASTE PROCESSING
SOILS
SOLIDIFICATION
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
DECOMPOSITION
MANAGEMENT
MATERIALS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PROCESSING
RADIOACTIVE MATERIALS
RADIOACTIVE WASTES
TAR
WASTE MANAGEMENT
WASTE PROCESSING
WASTES
052001* - Nuclear Fuels- Waste Processing
023000 - Petroleum- Properties & Composition