Performance and Enhanced Efficiency Induced by Cold Plasma on SAPO-34 Membranes for CO2 and CH4 Mixtures
Abstract
:1. Introduction
2. Materials and Methods
2.1. Membrane Synthesis
2.1.1. SAPO-34 Seed Synthesis
2.1.2. SAPO-34 Membrane Synthesis
2.1.3. Membrane Continuity
2.2. Plasma Membrane System Design
2.3. Membrane Characterization
3. Results and Discussion
3.1. CO2 and CH4 Permeance
3.2. Electrical Characterization
3.3. Effect on Morphology of SAPO-34 Membranes
3.4. Plausible Understanding of CO2/CH4 Plasma-Mediated Separations
4. Conclusions
Supplementary Materials
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Operation | Feed Ratio | CO2 Permeance | CH4 Permeance | Selectivity (α) | Permeate Pressure | Separation Index |
---|---|---|---|---|---|---|
CH4:CO2 | (mol)/(m2·s·Pa) | (mol)/(m2·s·Pa) | CO2/CH4 | Pascal | π | |
No Plasma | 92:8 | 1.3 × 10−11 | 1.7 × 10−10 | 0.08 | 1378 | −1.6 × 10−8 |
No Plasma | 50:50 | 1.1 × 10−10 | 9.0 × 10−11 | 1.25 | 1378 | 3.9 × 10−8 |
Plasma | 92:8 | 1.4 × 10−11 | 1.9 × 10−10 | 0.07 | 1378 | −1.8 × 10−8 |
Plasma | 50:50 | 1.0 × 10−10 | 7.8 × 10−11 | 1.29 | 1378 | 3.9 × 10−8 |
Pulsed Plasma | 92:8 | 1.6 × 10−11 | 1.3 × 10−10 | 0.12 | 1378 | −1.9 × 10−8 |
Pulsed Plasma | 50:50 | 1.2 × 10−10 | 6.6 × 10−11 | 1.81 | 1378 | 1.3 × 10−7 |
Membrane | Average Crystal Size | Average Thickness (92:8 CH4:CO2) | Average Thickness (50:50 CH4:CO2) | |
---|---|---|---|---|
μm | μm | μm | ||
SAPO-34 Fresh | 5.3 ± 2.1 | 5.8 ± 1.2 | 2.4 ± 1.8 | |
SAPO-34 Plasma | 9.7 ± 2.1 | 2.7 ± 1.8 | 4.7 ± 1.9 | 3.3 ± 0.9 |
SAPO-34 Pulsed Plasma | 3.7 ± 1.5 | 5.2 ± 1.3 | 4.6 ± 1.8 |
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Gorky, F.; Storr, V.; Jones, G.; Nambo, A.; Jasinski, J.B.; Carreon, M.L. Performance and Enhanced Efficiency Induced by Cold Plasma on SAPO-34 Membranes for CO2 and CH4 Mixtures. Membranes 2024, 14, 178. https://doi.org/10.3390/membranes14080178
Gorky F, Storr V, Jones G, Nambo A, Jasinski JB, Carreon ML. Performance and Enhanced Efficiency Induced by Cold Plasma on SAPO-34 Membranes for CO2 and CH4 Mixtures. Membranes. 2024; 14(8):178. https://doi.org/10.3390/membranes14080178
Chicago/Turabian StyleGorky, Fnu, Vashanti Storr, Grace Jones, Apolo Nambo, Jacek B. Jasinski, and Maria L. Carreon. 2024. "Performance and Enhanced Efficiency Induced by Cold Plasma on SAPO-34 Membranes for CO2 and CH4 Mixtures" Membranes 14, no. 8: 178. https://doi.org/10.3390/membranes14080178