Buddin Meor Muhammad Hafiz Shah, Ahmad Abdul Latif, Zainuddin Muhd Izzudin Fikry
School of Chemical Engineering, Universiti Sains Malaysia Engineering Campus, Nibong Tebal 14300, Malaysia.
School of Chemical Engineering, College of Engineering, Universiti Teknologi MARA, Shah Alam 40450, Malaysia.
Membranes (Basel). 2023 Jan 19;13(2):134. doi: 10.3390/membranes13020134.
The current work predicted the permeance of CO across a ZIF-L@PDMS/PES composite membrane using two different models. The membrane was fabricated by dipping a PES hollow fiber membrane in a coating solution made using PDMS that contained ZIF-L. First, flat sheet ZIF-L@PDMS membranes were fabricated to verify the role of ZIF-L on the gas separation performance of the membrane. Based on the data, the presence of ZIF-L in the PDMS matrix allowed enhancement of both permeability and selectivity of CO, where the maximum value was obtained at 1 wt% of ZIF-L. The performance of ZIF-L@PDMS layer, as a function of ZIF-L loading, was well-predicted by the Cussler model. Such information was then used to model the CO permeance across ZIF-L@PDMS/PES composite membrane via the correction factor, which was introduced in the resistance in series model. This work discovered that the model must consider the penetration depth and the inorganic loading (in the case of ZIF-L@PDMS/PES). The error between the predicted CO permeance and the experimental results was found to be minimal.
当前的工作使用两种不同的模型预测了CO在ZIF-L@PDMS/PES复合膜中的渗透系数。该膜是通过将PES中空纤维膜浸入含有ZIF-L的PDMS制成的涂层溶液中制备的。首先，制备了平板ZIF-L@PDMS膜以验证ZIF-L对膜气体分离性能的作用。基于这些数据，PDMS基质中ZIF-L的存在使得CO的渗透率和选择性都得到了提高，其中在ZIF-L含量为1 wt%时获得了最大值。Cussler模型很好地预测了ZIF-L@PDMS层的性能与ZIF-L负载量的关系。然后，通过串联阻力模型中引入的校正因子，利用这些信息对CO在ZIF-L@PDMS/PES复合膜中的渗透系数进行建模。这项工作发现该模型必须考虑渗透深度和无机负载量（对于ZIF-L@PDMS/PES而言）。预测的CO渗透系数与实验结果之间的误差被发现是最小的。
