CO2 contained in exhaust gases from a coal-fired power plant was absorbed in an aq. soln. of Me2C(NH2)CH2OH and piperazine. The compn. of the desorbed CO2 stream was analyzed. It contained H2O (up to 4.4% by vol.) and O-2 (up to 0.1% by vol.). Water removal methods from the stream were discussed and guidelines for CO2 quality were presented.