In this study, we report the effect of water vapor on CO₂ uptake using Mg-MOF-74 via adsorption breakthrough modeling and lab experiments. Carbon dioxide is the most influencing gas that significantly expedites global warming. Therefore, it is ultimately necessary to reduce the rapid increase of CO₂ concentration in the atmosphere by means of Carbon Capture and Storage (CCS). CO₂ separation by physical adsorption is an interesting technology to achieve CO₂ capture with minimum energy penalties. Metal-organic framework (MOF) adsorbents forms a class of adsorbents with much higher specific surface areas than conventional porous materials such as activated carbons, and zeolites. However, most MOFs show notable hydro instability for CO₂ separation from humid flue gas. Mg-MOF-74 is a superior adsorbent amongst other adsorbents owing to its high CO₂ uptake at flue gas conditions. A model is developed using User-Defined-Function in an ANSYS Fluent program. Two and three-dimensional models are validated by comparing their results with experimental work carried out by the authors, at ambient temperature, and published experimental data for high temperature conditions. The effect of water vapor is studied at different temperatures and various relative humidity values for Mg-MOF-74. Results indicate that CO₂ uptake has been significantly reduced with the existence of more than 5% water vapor when Mg-MOF-74 is used as an adsorbent.

在这项研究中，我们通过吸附突破模型和实验室实验报告了Mg-MOF-74对水蒸气对CO ₂吸收的影响。二氧化碳是影响最大的气体，可显着加速全球变暖。因此，最终有必要通过碳捕集与封存（CCS）来减少大气中CO ₂浓度的迅速增加。通过物理吸附分离CO ₂是获得CO ₂的有趣技术以最小的能量损失捕获。金属有机骨架（MOF）吸附剂形成了一类比表面积比常规多孔材料（例如活性炭和沸石）高得多的吸附剂。但是，大多数MOF在从湿烟道气中分离CO _2时显示出明显的水不稳定性。Mg-MOF-74由于其高的CO ₂而在其他吸附剂中是优良的吸附剂在烟气条件下的吸收。使用ANSYS Fluent程序中的用户定义功能来开发模型。通过将二维和三维模型的结果与作者在环境温度下进行的实验工作进行比较，并公开了高温条件下的实验数据，从而验证了二维模型和三维模型的有效性。研究了在Mg-MOF-74的不同温度和不同相对湿度值下水蒸气的影响。结果表明，当使用Mg-MOF-74作为吸附剂时，存在超过5％的水蒸气，CO _2的吸收已显着降低。