Prediction of CO2 Permeability in NH2-MIL-53(Al)/Cellulose Acetate Mixed matrix Membranes using Theoretical Models

Abstract

Pal model has been proposed as an extension of Lewis-Nielsen model. Rafiq et al. [27] applied Pal model to predict CO 2 permeability across the nano-silica/PSF MMMs. The AARE% obtained was 35.61% in comparison with the experimental data. Subsequently, Sanaeepur et al. [20] presented an extensive discussion on the reliability of Felske model [18]. The AARE% obtained for CO 2 permeability through the Felske model was 31.07%. Unfortunately, Felske did not account for polymer chain rigidification factor and it is also facing Abstract: Estimation of CO 2 permeability of mixed matrix membranes (MMMs) using models has importance for the design of membrane separation system. In the current article, the previously reported models were used for the calculations of CO 2 permeability through new type of MMMs, NH 2-MIL-53(Al)/CA. It was found that modified Maxwell model demonstrated the absolute average error (AARE %) of 1.66%, which is lower than the AARE% obtained from the other theoretical models. Besides, the results also showed that AARE% of models for the prediction of CO 2 permeability was in the order of modified Maxwell model < Lewis-Nielsen model < Fleski model < Bruggeman model < Pal model< modified Fleski model < Maxwell model. Therefore, it can be concluded that modified Maxwell model is more accurate compared to other theoretical models for the prediction of CO 2 permeability through NH 2-MIL-53(Al)/CA MMMs.

Development and Performance Evaluation of Cellulose Acetate-Bentonite Mixed Matrix Membranes for CO2 Separation

“…Since, CO 2 owing to its polar nature has higher condensability as well as solubility towards the glassy CA membrane compared to CH 4 and N 2 gases. Apart from solubility, the lower kinematic diameter and linear molecular shape of CO 2 compared to other counterparts are advantageous for fast diffusion across the CA membranes [41]. That is why the permeability of CO 2 gas is higher compared to CH 4 and N 2 gases across the developed pristine and MMMs.…”

Rheological and Thermodynamic Behaviour of PSf/ZnO: Effect of Zinc Oxide

“…According to Sajjad Mohsenpoura et al [8], as the binodal lines move towards the polymer/solvent axis in which the thermodynamic instable increases and more porous membrane expected. Therefore, hydrazine hydrate as additive is more unstable thermodynamic and the results is nearly to binodal line polymer/solvent axis have considered having more porous membrane compare to sodium borohydride and urea [13]. The hydrazine hydrate reduces the nonsolvent (water) for precipitation of casting solution and tendency for demixing is increases.…”

Recent Advances and Challenges of Deep Eutectic Solvent based Supported Liquid Membranes

“…To overcome this issue, researchers replaced the VOC solvents with ILs because of their low vapor pressure and high thermal and chemical stabilities (26)(27)(28). The use of ILs enhanced the operational and structural stability of SLMs in separation processes (29)(30)(31)(32)(33)(34). Applications of ILs in SLMs significantly enhanced the CO 2 permeability and CO 2 /CH 4 and CO 2 /N 2 ideal selectivity (35,36).…”

“…To replace ILs and VOCs, DESs are greener, safer and cheaper for fabrication of SLMs for liquids and gases separation (33,35,36). DESs are sustainable solvents made by mixing a hydrogen bond acceptor (HBA) with a hydrogen bond donor (HBD) (29,30,34).…”

“…A real breakthrough in the design of DES-based SLM materials in terms of durability is yet to be investigated. For long-term durability, a good match between the DES and its membrane support is a crucial issue and significant effort is required to establish this match reliably (33). Furthermore, the effect of process parameters including, temperature, pressure difference and feed composition on SLM permeation performances also need to be investigated.…”