二氧化碳在鉀鹽（L－麩醯胺酸及L－天冬醯胺）水溶液中之平衡溶解度量測研究

Equilibrium Solubility of CO2 in Aqueous Potassium Salt Solutions of L-Glutamine and L-Asparagine

陳哲瑋(Che-Wei Chen)

指導教授 ： 李夢輝

中原大學/工學院/化學工程研究所/碩士(2014年)

https://doi.org/10.6840/cycu201400613

摘要

本研究完成了二氧化碳在兩種胺基酸鹽水溶液中的氣液平衡溶解度數據量測，成分分別為鉀鹽（L－麩醯胺酸及L－天冬醯胺）水溶液。本研究涵蓋兩個系統，鉀鹽（L－麩醯胺酸）水溶液濃度為：0.5, 1 及2 M ；溫度為40, 60及80ºC；二氧化碳分壓範圍:1 ~ 1000 kPa。鉀鹽（L－天冬醯胺）水溶液濃度為：0.5, 1 及2 M；溫度為40及80ºC；二氧化碳分壓範圍:1 ~ 1000 kPa。
氣液平衡數據由Modified Kent and Eisenberg (1993) 的修正模式來表示。藉由氣體再循環反應器進行氣液平衡反應，氣相循環可加速氣液平衡達到速率，氣相組成由連線之氣相層析儀分析，液相組成則由酸鹼滴定決定二氧化碳氣體的吸收負載量。
本研究結果完成之氣液平衡溶解度數據可提供作為設計吸收二氧化碳程序設備使用鉀鹽（L－麩醯胺酸及L－天冬醯胺）水溶液當作二氧化碳吸收劑使用，以發展一個符合節能及經濟效益及綠色二氧化碳吸收劑之吸收程序。

關鍵字

胺基酸鹽 ； 二氧化碳吸收

並列摘要

In this work, the equilibrium solubility of carbon dioxide in the aqueous potassium salt solutions systems were measured at temperatures (40 to 80) ºC and pressures (1 to 1000) kPa using a vapor recirculation equilibrium cell. The aqueous potassium salt solutions systems studied are binary mixtures of (0.5, 1 and 2 ) potassium salt of L-Glutamine + H2O and (0.5, 1 and 2 ) potassium salt of L-Asparagine + H2O.
The measured equilibrium solubility data were correlated as functions of temperature, carbon dioxide partial pressure and amino acid salt concentration using a modified Kent-Eisenberg model which based on previous works of Hu and Chama (1990) and Li and Shen (1993). The results of this study can be used for carbon dioxide absorption process design using aqueous potassium salt of L-Glutamine or aqueous potassium salt of L-Asparagine as carbon dioxide absorbents for the vapor-liquid equilibrium calculations for development of the more efficient, less energy-penalty, and greener carbon dioxide absorption process.

並列關鍵字

carbon dioxide absorption ； amino acid salt

參考文獻

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