Air stripping of volatile organic compounds from groundwater: An evaluation of a centrifugal vapor-liquid contractor

Thesis/Dissertation · Sun Jan 01 04:00:00 EST 1989

OSTI ID:5478294

Singh, S P

The performance of a centrifugal vapor-liquid contactor equipped with high specific surface area packing (>2,000 m{sup 2}/m{sup 3}) was evaluated for air stripping of jet fuel components from groundwater. Hydraulic test data indicated that the Sherwood flooding correlation which has been proposed for use in designing centrifugal vapor-liquid contactors overestimates the rotational speeds at which flooding occurs. For the mass transfer performance, a concept of area of a transfer unit (ATU) was introduced to account for the change in fluid loading with radius of the packing torus. The ATU was found to be a strong function of the specific surface area of the packing and to a lesser extent a function of rotor speed and liquid flow rate. A correlation based on the specific surface area of the packing is proposed for predicting the ATU. A simple empirical model is also proposed for determining the power consumed in turning the packing torus at various operating conditions. Previous claims in the literature that centrifugal vapor-liquid contactor is resistant to fouling because of high shear force were found not to be valid for groundwater with high iron content.

• Research Organization: Tennessee Univ., Knoxville, TN (United States)
• OSTI ID: 5478294
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
540320* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (1990-)
CLEANING
DECONTAMINATION
EQUIPMENT
EVALUATION
FLOW RATE
GROUND WATER
HYDROGEN COMPOUNDS
MANAGEMENT
MASS TRANSFER
MATERIALS RECOVERY
MATHEMATICAL MODELS
MATTER
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
POLLUTION
POLLUTION CONTROL EQUIPMENT
PROCESSING
RECOVERY
SURFACE AREA
SURFACE PROPERTIES
VOLATILE MATTER
WASTE MANAGEMENT
WASTE PROCESSING
WATER
WATER POLLUTION