Abstract CO2 capturing is an industrial tool in worldwide sustainable development to reduce the greenhouse effect. In this study, the new experimental vapor-liquid equilibrium (VLE) data for CO2 solubility in the mixtures of physical and chemical solvents were investigated. The carbon dioxide solubility measurements were carried out using a quasi-static method through the DMSO (10 wt.%) +H2O and sulfolane (20 wt.%) +H2O systems at the temperatures of 328.15 and 343.15 K and pressure up to 3554 kPa. Moreover, the CO2 partial pressure against its gas loading was obtained for the DMSO+MDEA+H2O system at the compositions of (10-40-50), (20-40-40) wt. %, 328.15, 343.15 K, and pressure up to 3343 kPa. The influence of the physical solvents such as sulfolane and DMSO in the aqueous MDEA mixtures on CO2 solubility was studied. We showed that DMSO was more effective than sulfolane in the absorption of CO2. Finally, using the ion-pair concept, the eNRTL model was used to model the vapor-liquid equilibrium experimental data so that the molecule–molecule, ion pair-molecule binary interaction parameters of this model were obtained. An overall average relative deviation (AAD%) of 10.95 has resulted in the quaternary DMSO+MDEA+H2O+CO2 system.

中文翻译：

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不同温度和成分下二元水性 DMSO 和 MDEA 及其三元混合物中 CO2 溶解度的测量和建模

摘要 CO2 捕集是全球可持续发展中减少温室效应的一种工业工具。在这项研究中，研究了 CO2 在物理和化学溶剂混合物中溶解度的新实验汽液平衡 (VLE) 数据。使用准静态方法通过 DMSO (10 wt.%) +H2O 和环丁砜 (20 wt.%) +H2O 系统在 328.15 和 343.15 K 的温度和高达 3554 kPa 的压力下进行二氧化碳溶解度测量. 此外，对于 DMSO+MDEA+H2O 系统，在 (10-40-50)、(20-40-40)wt. %、328.15、343.15 K，压力高达 3343 kPa。研究了含水 MDEA 混合物中的物理溶剂如环丁砜和 DMSO 对 CO2 溶解度的影响。我们发现 DMSO 在吸收 CO2 方面比环丁砜更有效。最后，利用离子对概念，利用eNRTL模型对汽液平衡实验数据进行建模，从而得到该模型的分子-分子、离子对-分子二元相互作用参数。四元 DMSO+MDEA+H2O+CO2 系统的总体平均相对偏差 (AAD%) 为 10.95。