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272 Lawrence K. Wang et al.

Fig. 16. Carbon Dioxide Absorption. (Courtesy of Lantec Products Inc.)

following projected losses: (1) human life loss and property damages as a result of
more frequent tropical cyclones; (2) land loss as a result of rising sea levels; (3)
damages to fishing stocks, agriculture, and water supplies; and (4) disappearance of
many endangered species. Technologically, carbon dioxide is a gas that can easily
be removed from the industrial stacks by a scrubbing process using any alkaline
substances.
2. The following discussion presents a feasible wet scrubbing system for removing car-
bon dioxide from an air emission stream. Several wet scrubbing (absorption) processes
are possible for carbon dioxide removal from an air emission stream. One plausible
scrubbing solution is presented in Fig. 16.

This single-stage scrubbing system will remove 99.9% of the carbon dioxide present
in the airstream at these given conditions. A scrubber characteristics diagram is
shown in Fig. 16. The packed tower wet scrubber, per Fig.1b, has the following
characteristics:
Gas loading = 500 lb/h-ft 2
Temperature = 25°C
Pressure = 1 atm
Scrubbing liquor of 25% sodium carbonate and 4% caustic
Packing media used Q-PAC packing in polypropylene from Lantec Products