各種水溶液でのCO2ガスの吸収/放散に関する基礎的研究

概要

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Time variation of pH and CO2 concentration in the various solutions were continuously measured by blowing CO2 and N2 gas through an upward vertical glass nozzle, and absorption and desorption rates of CO2 gas were studied. The experimental results are summarized as follows. (1) In the case of CO2 absorption into the solutions without chemical reaction at pH between 1 and 4, the apparent adsorption rates were approximately 2.4 × 10(-3)s(-1).(2) The apparent absorption rates into the alkaline solutions were higher than of physical absorption. The apparent absorption rates of hydroxide and carbonate solutions were higher with pH of the solution, and those of carbonate 　slutions were higher those of hydroxide solutions in the case of same pH. And those of amine solutions were higher than those of sodium hydroxide solutions in the case of same collcentration.(3) The apparent desorption rates from the solutions without chemical at pH between 1 and 4 were approximately 4.5 ×10(-3)s(-1).(4) In the case of the solutions with chemical reaction of CO2 gas, the apparent desorption rates of amine solutions were higher than those of sodium hydroxide solution.
津山工業高等専門学校の論文
1999-01-04