Environmental Sciences Bulletin of The Korean Environmental Sciences Society

The Korean Environmental Sciences Society (한국환경과학회)
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Physical Solubility and Diffusivity of Carbonyl Sulfide in Aqueous Diethanolamine

  • Park, Moon-Ki (Dept. of Environmental science and Engineering Kyungsan University)
  • Published : 2000.12.01
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Abstract

This paper reports on an experimental study of the absorption of COS in a secondary amine diethanolamine. The primary objectives were to investigate an analogy between $N_2$O and COS, thereby allowing an estimation of the physical solubility and diffusivity of the sulfur gases in the reacting amine solutions. The solubilities and diffusivities of $N_2$O and COS in 5~25% aqueous polyethylene glycol at $25^{\circ}C$ were measured. The results appeared to verify the use of an $N_2$O-COS analogy for estimating the solubility and diffusivity of COS in aqueous solutions of alkanolamines up to an approximate 25 weight % concentration. The mean deviation of the $N_2$O analogy relative to the measured solubilities was 3.7%, and the mean deviation between the analogy and the measured diffusion coefficients using the experimental values for Hcos/PEG was 14.6%.

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References

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