A multiple stage crosscurrent packed column suitable for gas-liquid
mass transfer was constructed and operated. The absorption
column consisted of a rectangular box constructed of plexiglass and
metal. Deflection baffles were positioned at regular intervals on
opposite sides of a central packed section to divert the gas phase
into the...
A multi-stage, crosscurrent column, packed with Pall rings, was
employed for oxygen absorption from an oxygen-rich air phase by
contacting with water. Mass transfer data were collected for the
column using 6 and 12 baffles and employing a partial gas phase recycle.
Data were also collected from a countercurrent column...
The performance of a multiple stage crosscurrent tower packed
with Pall rings was characterized with and without a recycle loop on
the gas stream. The column used 12 baffles. The absorption system
studied was the transfer of oxygen from an oxygen-enriched air stream
into a water stream which is a...
Batch sorption tests were conducted using 3,4-DCP and cellulose triacetate as the sorbate/sorbent pair. Sorbate concentrations
in the liquid were sampled with time and analyzed by electron
capture detector gas chromatography. Sorption was found to be a two
stage process characterized by a rapid initial uptake followed by a
extended...
A mathematical model was developed to predict the absorption
rate of a slightly soluble gas entrained by a plunging liquid jet. The
single parameter of the model, the transfer factor, TF, was defined
as the summation of the product of the mass transfer coefficient and
interfacial area over all the...
The rate of interaction of carbon dioxide with eight detached organic films commonly used as coatings for metal surfaces was examined.
The films studied were lacquers of several different formulations
including oleoresinous, phenolic, vinyl, alkyd, epoxy, and
hydrocarbon types. The sorption was measured on a McBain type
gravimetric adsorption balance...
The surface renewal rate from Danckwerts' theory and
the effective interfacial area between gas and liquid per
unit packing volume in a packed absorption tower were
evaluated for the absorption of carbon dioxide into
carbonate/bicarbonate buffer solution accompanied by a
pseudo-first order chemical reaction. The rate of chemical
reaction in...
A novel technique was developed for studying gas phase flow in unsaturated porous media. Carbon dioxide was pumped through a back-lit chamber packed with translucent sand which was variably saturated with water containing the pH indicator dye methyl red. As the carbon dioxide dissolved in the pore water, lowering the...