Alternative biological-treatment processes for remediation of creosote- and PCP-contaminated materials: Bench-scale treatability studies
Bench-scale biotreatability studies were performed to determine the most effective of two bioremediation application strategies to ameliorate creosote- and pentachlorophenol (PCP)-contaminated soils present at the American Creosote Works Superfund site, Pensacola, Florida: solid-phase bioremediation or slurry-phase bioremediation. When indigenous microorganisms were employed as biocatalysts, solid-phase bioremediation was slow and ineffective (8-12 weeks required to biodegrade >50% of resident organics). Biodegradation was limited to lower-molecular-weight constituents rather than the more hazardous, higher-molecular-weight (HMW) compounds; PCP and HMW polycyclic aromatic hydrocarbons (PAHs) containing 4 or more fused rings resisted biological attach. Moreover, supplementation with aqueous solution of inorganic nutrients had little effect on the overall effectiveness of the treatment strategy. Alternatively, slurry-phase bioremediation was much more effective: >50% of targeted organics were biodegraded in 14 days. Again, however, more persistent contaminants, such as PCP and HMW PAHs, were not extensively degraded when subjected to the action of indigenous microorganisms.
- Research Organization:
- Southern BioProducts, Inc., Pendleton, SC (United States)
- OSTI ID:
- 5547535
- Report Number(s):
- PB-91-179085/XAB; CNN: EPA-68-033479
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
540220* -- Environment
Terrestrial-- Chemicals Monitoring & Transport-- (1990-)
560300 -- Chemicals Metabolism & Toxicology
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
AROMATICS
BENCH-SCALE EXPERIMENTS
BIODEGRADATION
CATALYSTS
CHEMICAL REACTIONS
CHLORINATED AROMATIC HYDROCARBONS
CLEANING
CREOSOTE
DECOMPOSITION
DECONTAMINATION
DEVELOPED COUNTRIES
FEDERAL REGION IV
FLORIDA
HALOGENATED AROMATIC HYDROCARBONS
LAND POLLUTION
LAWS
MANAGEMENT
MICROORGANISMS
NORTH AMERICA
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
POLLUTION
POLLUTION LAWS
REMEDIAL ACTION
SOILS
SUPERFUND
USA
WASTE DISPOSAL
WASTE MANAGEMENT