Anaerobic and aerobic treatment of chlorinated, aliphatic compounds
Biological degradation of 12 chlorinated aliphatic compounds (CACs) was assessed in bench-top reactors and in serum bottle tests. Three continuously mixed daily batch-fed reactor systems were evaluated: anaerobic, aerobic, and sequential-anaerobic-aerobic (sequential). The anaerobic culture degraded seven of the feed CACs. The specialized aerobic cultures degraded all but three of the highly chlorinated CACs. The sequential system outperformed either of the other systems alone by degrading 10 of the feed CACs: chloroform, carbon tetrachloride, 1,1-dichloroethane, 1,1,1-trichloroethane, hexachloroethane, 1,1-dichloroethylene, trans-1,2-dichloroethylene, trichloroethylene, perchloroethylene, and 1,2,3-trichloropropane, plus the anaerobic metabolites: dichloromethane and cis-1,2-dichloroethylene.
- Research Organization:
- Environmental Protection Agency, Cincinnati, OH (United States). Risk Reduction Engineering Lab.
- OSTI ID:
- 5508715
- Report Number(s):
- PB-94-113685/XAB; EPA--600/J-93/438; CNN: NIEHS-5P42ES04696-04
- Country of Publication:
- United States
- Language:
- English
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59 BASIC BIOLOGICAL SCIENCES
AEROBIC DIGESTION
ALKENES
ANAEROBIC DIGESTION
BACTERIA
BENCH-SCALE EXPERIMENTS
BIOCONVERSION
BIODEGRADATION
BIOREACTORS
CARBON TETRACHLORIDE
CHEMICAL REACTIONS
CHLORINATED ALIPHATIC HYDROCARBONS
CHLORINE COMPOUNDS
CHLOROFORM
CONTROL
DATA
DECOMPOSITION
DEHALOGENATION
DIGESTION
ETHYLENE
EVALUATED DATA
GROUND WATER
HALOGEN COMPOUNDS
HALOGENATED ALIPHATIC HYDROCARBONS
HYDROCARBONS
HYDROGEN COMPOUNDS
INFORMATION
MANAGEMENT
METABOLITES
METHANOTROPHIC BACTERIA
MICROORGANISMS
NUMERICAL DATA
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
OXYGEN COMPOUNDS
POLLUTION CONTROL
PROCESSING
WASTE MANAGEMENT
WASTE PROCESSING
WATER
WATER POLLUTION CONTROL