ABSORPTION OF CARBON-MONOXIDE IN HOLLOW-FIBER MEMBRANES

The absorption of carbon monoxide from nitrogen-carbon monoxide mixtur es has been studied in microporous hollow fiber membranes using ammoni acal cuprous chloride solution. The permeation rate seems to be contro lled by diffusion in the liquid at moderate liquid flow rates. At high liquid now rate, fast chemical reaction in the liquid phase may accel erate the carbon monoxide mass transfer in the liquid, and membrane re sistance may limit the carbon monoxide transfer. Under suitable condit ions, the hollow fiber membrane can be an attractive alternative to pa cked columns for absorption of carbon monoxide from gas mixtures of in dustrial relevance.