Enrichment of biogas through composite membrane of PEBA-1657/ hierarchical T-type zeolite

Hassan, Tengku Nur Adibah Tengku; Jusoh, Norwahyu; Yeong, Yin Fong; Lock, Serene Sow Mun; Suhaimi, Nadia Hartini; Mubashir, Muhammad

doi:10.1016/j.chemosphere.2022.135529

Cited by 7 publications

(2 citation statements)

References 47 publications

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“…A 4 wt. % of Pebax-1657/SAPO-34 CM was fabricated via the solution casting method according to the reported literature [19]. SAPO-34 particles were first homogeneously mixed for 2 h at 90 • C under reflux in a solvent composed of 70% ethanol and 30% deionized water before being sonicated for 30 min.…”

Section: Fabrication Of CMmentioning

confidence: 99%

“…The permeability and selectivity of the membranes were measured at temperatures ranging from 25 • C to 60 • C and pressures of 3.5 to 10.0 bars, respectively. The permeation of CO 2 and C 2 H 4 gases was determined using a gas permeation test apparatus as disclosed in the literature [19]. A bubble flow meter connected to a permeate line was used to check the flow rate of gas.…”

Section: Single Gas Permeation Measurementsmentioning

confidence: 99%

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Ethylene Recovery via Pebax-Based Composite Membrane: Numerical Optimization

et al. 2023

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Membrane technology, particularly polymeric membranes, is utilized in major industrial ethylene recovery owing to the very convenient and robust process. Thus, in this paper, a composite membrane (CM) comprising SAPO-34 and Pebax-1657 was employed to conduct a separation performance under two operating conditions, including temperatures and pressures, ranging from 25.0–60.0 °C and 3.5–10.0 bar, respectively. CO2 permeability and CO2/C2H4 ideal selectivity values that ranged from 105.68 to 262.86 Barrer and 1.81 to 3.52, respectively, were obtained via the experimental works. The separation of carbon dioxide (CO2) from ethylene (C2H4) has then been optimized using response surface methodology (RSM) by adopting a central composite design (CCD) method. As a result, the ideal operational conditions were discovered at a temperature of 60.0 °C and pressure of 10.0 bar with the maximum CO2 permeability of 233.62 Barrer and CO2/C2H4 ideal selectivity of 3.22. The typical discrepancies between experimental and anticipated data for CO2 permeability and CO2/C2H4 ideal selectivity were 1.67% and 3.10%, respectively, demonstrating the models’ validity. Overall, a new combination of Pebax-1657 and SAPO-34 composite membrane could inspire the latest understanding of the ethylene recovery process.

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Section: Fabrication Of CMmentioning

confidence: 99%

Section: Single Gas Permeation Measurementsmentioning

confidence: 99%

Ethylene Recovery via Pebax-Based Composite Membrane: Numerical Optimization

et al. 2023

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Fabrication of thin‐film composite mixed matrix membrane with 2D magnesium oxide for gas separation application

Zainuddin,

Ahmad,

Adnan

2025

J of Chemical Tech & Biotech

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BACKGROUNDIncreased concentration of carbon dioxide (CO2) emission leads to climate change. Hollow‐fibre membrane technology seems feasible due to its high packing density, facile processability and easily tuneable properties. A mixed matrix membrane is designed to overcome the balance of solution–dissolution phenomena. However, ensuring optimized dispersion of fillers at the outermost selective skin layer region appears to be challenging. In this study, a thin‐film composite mixed matrix membrane (TFCMMM) is fabricated with a facile dip‐coating method comprising a PES substrate, polydimethylsiloxane (PDMS) coating layer and magnesium oxide (MgO) nanosheet as the additive filler in the coating layer.RESULTSThe loading of the MgO nanosheet was varied from 0 to 10 wt% in the PDMS coating solution. Mixed gas performance showed a similar trend to the single gas permeation test, with lower gas permeance and selectivity due to the effect of competitive sorption between the binary gas mixtures. The permeance–selectivity trade‐off was absent until the MgO loading of 1.00 wt%, when CO2/N2 and CO2/CH4 improved by 35.13% and 27.55%, respectively, over pristine TFCMMM. When the MgO loading was increased beyond 2.5 wt%, filler agglomeration and leaching caused the formation of non‐selective voids, reducing CO2/N2 and CO2/CH4 selectivity. The improvement in selectivity observed in this study was due to an increased tortuous pathway of the gas penetrant due to the presence of a high‐aspect‐ratio MgO nanosheet, resulting in slower diffusion of gas through the PDMS selective layer of the TFCMMM.CONCLUSIONOur findings provide additional insights into the fabrication of TFCMMM using an MgO nanosheet as an additive filler in the coating layer, specifically for CO2/N2 and CO2/CH4 separation. © 2025 Society of Chemical Industry (SCI).

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