Laboratory investigations of cascade crossflow packed towers for air stripping of volatile organics from ground-water. Final report, 21 Apr 86-24 Aug 89
This report evaluates the effectiveness of a cascade crossflow air stripper for the removal of Volatile Organic Compounds (VOCs) from simulated groundwater. Experimental tests were conducted on four VOCs-methylene chloride, chloroform, 1,2-dichloroethane and carbon tetrachloride - on both a 6-inch internal diameter laboratory scale column and a 12-inch internal diameter pilot-scale column. The additional variable, alpha, which is the ratio of gas to liquid flow areas was investigated. Experimental data on stripping efficiencies were used to obtain mass transfer coefficients in crossflow operation. These mass transfer coefficients were compared with literature correlations obtained for conventional countercurrent operation, but modified appropriately for crossflow. For liquid phase controlled chemicals, the modified Onda's correlation satisfactorily predicted the crossflow mass transfer coefficient.
- Research Organization:
- Louisiana State Univ., Baton Rouge, LA (United States). Dept. of Chemical Engineering
- OSTI ID:
- 5892002
- Report Number(s):
- AD-A-242496/8/XAB; CNN: F08635-86-C-0159
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
540320* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (1990-)
CARBON TETRACHLORIDE
CHLORINATED ALIPHATIC HYDROCARBONS
CHLOROFORM
CLEANING
CONTROL
DATA
DECONTAMINATION
EXPERIMENTAL DATA
FLUID FLOW
GROUND WATER
HALOGENATED ALIPHATIC HYDROCARBONS
HYDROGEN COMPOUNDS
INFORMATION
MANAGEMENT
MASS TRANSFER
MATERIALS RECOVERY
METHYLENE CHLORIDE
NUMERICAL DATA
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
OXYGEN COMPOUNDS
POLLUTION
POLLUTION CONTROL
PROCESSING
RECOVERY
SIMULATION
VOLATILITY
WASTE MANAGEMENT
WASTE PROCESSING
WATER
WATER POLLUTION
WATER POLLUTION CONTROL