The Role of Solvent Mixture, Acetic Acid and Water in the Formation of CA Membrane for CO2/N2 Separation

Jawad, Zeinab Abbas; Ahmad, Abdul Latif; Low, Siew Chun; Lee, R.J.; Tan, Peng Chee

doi:10.1016/j.proeng.2016.06.446

Cited by 5 publications

(3 citation statements)

References 17 publications

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“…The 1735.21 cm -1 band in the CA membranes corresponded to the carbonyl group (C=O) and the band at 3471.87 cm -1 represented the hydroxyl group (O-H). 14,21 Moreover, Figure 1 illustrated that the intensity of absorbance decreased from M1, M2 to M3 but dramatically increased in M4. When the content of CA-39 increased in the blend membranes, it caused reduction in the absorbance intensity for each main band and demonstrated that fewer functional groups were included in the hydrogen bonding of the blend membranes.…”

Section: Effects Of Polymer Concentration Of Ca With Different Acetylmentioning

confidence: 96%

“…13 The percentage of polymer-solvent mixture was determined from previous works. 14,15 The casting thickness of the membrane was fixed at 250 μm and the composition for the membranes were illustrated in Table 1.…”

Section: Ca Membrane Fabricationmentioning

confidence: 99%

“…The spectra wavenumbers of membrane specimens were recorded at ambient room temperature and repeated few times for every specimen. 14,20 3.…”

Section: Atr-ftir Spectroscopy Analysismentioning

confidence: 99%

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Preparation and Characterisation of Blend Cellulose Acetate Membrane for CO2/N2 Separation

Jin¹,

Jawad²,

Tan³

et al. 2020

JPS

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Among the carbon dioxide (CO 2) separation methods, the membrane separation technology has been mostly applied to reduce the CO 2 emission. Since most CO 2 are emitted from power generation plants, the CO 2 /nitrogen (N 2) separation was selected. In this project, the blend cellulose acetate (CA) membranes were prepared by mixing CA with 39% acetyl concentration (CA-39) and 56% acetyl content (CA-56) through the wet-phase inversion method. The CO 2 /N 2 separation performance was determined by evaluating the permeation of gases and the CO 2 /N 2 selectivity by modifying the polymer concentration. The characterisation of the membrane was carried out by using the scanning electron spectrometry (SEM) and attenuated total reflectance Fourier transform infrared spectrometry analysis (ATR-FTIR). The optimal membrane obtained was M3 with polymer concentration of 4:6 (CA-39:CA-56) that had defect-free membrane surface with smooth dense skin layer. The functional groups present enhanced the gas permeance rate. With regards to the gas permeation test, M3 presented the best CO 2 /N 2 separation performance with CO 2 permeance of 99.26 ± 3.08 GPU, N 2 permeance of 87.12 ± 0.81 GPU and CO 2 /N 2 selectivity of 1.139 ± 0.037. It is expected that the results obtained from this work can be applied to industries, such as the gas separation field or power generation plant, in order to reduce CO 2 emission.

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Section: Effects Of Polymer Concentration Of Ca With Different Acetylmentioning

confidence: 96%