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Advisor(s)
Abstract(s)
SAPO-34 nanocrystals were prepared and used as inorganic filler in polyethersulfone (PES) membranes. The
influence of preparation conditions on permeation properties of CO2 and N2 gases and CO2/N2 selectivity were
studied to achieve the highest separation performance possible for this mixed-matrix membrane. Gas permeation
properties of PES/SAPO-34 MMMs with different contents of SAPO-34, PES and initial film thickness were
investigated according to a full factorial design of experiments (DOE). The permeation tests and DOE results
revealed that the optimized conditions to maximize the selectivity for PES/SAPO-34 are: composition of 18.5 wt
% of SAPO-34, 15 wt% of PES, and a casted film thickness of 400 μm resulting in a CO2/N2 selectivity of 30.85.
The findings showed that a multivariable model was validated and able to predict the selectivity with determination
coefficient R2 of 0.969 and the results are in accordance with values presented in literature for PES/
SAPO-34 membranes. An economic analysis shows that the commercial grade price for the optimized membrane
is EUR 9.43/m2 which represents around 2.2 times cheaper than polymeric commercial membranes.
Description
Keywords
SAPO-34 Mixed-matrix membranes Gas separation Optimization Economic analysis
Pedagogical Context
Citation
Cardoso, Jonathan S.; Fonseca, Joel P.; Lin, Zhi; Brito, Paulo; Gando-Ferreira, Licínio M. (2024). Optimization and performance studies of PES/SAPO-34 membranes for CO2/N2 gas separation. Microporous and Mesoporous Materials. ISSN 1387-1811. 364, p. 1-12
Publisher
Elsevier