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Carbon Dioxide Separation by Polyethylene Glycol and Glutamic Acid/Polyvinyl Alcohol Composite Membrane

Author

Listed:
  • Angus Shiue

    (Graduate Institute of Organic and Polymeric Materials, National Taipei University of Technology, Taipei 106, Taiwan
    Denotes equal contribution.)

  • Ming-Jie Yin

    (Beijing Key Laboratory for Green Catalysis and Separation, Department of Environmental and Chemical Engineering, Beijing University of Technology, Beijing 100124, China
    Denotes equal contribution.)

  • Min-Hsuan Tsai

    (Graduate Institute of Organic and Polymeric Materials, National Taipei University of Technology, Taipei 106, Taiwan)

  • Shu-Mei Chang

    (Graduate Institute of Organic and Polymeric Materials, National Taipei University of Technology, Taipei 106, Taiwan
    Department of Molecular Science and Engineering, Research and Development Center for Smart Textile Technology, National Taipei University of Technology, Taipei 106, Taiwan)

  • Graham Leggett

    (LI-COR Biosciences, Cambridge CB4 0WS, UK)

Abstract

In this study, Polyvinyl alcohol (PVA) blended with Polyethylene glycol (PEG), Monosodium glutamate (MSG) and Glutamic acid (GA) was cast on a reverse osmosis membrane to form a composite membrane. It is expected that the ether group can increase the CO 2 affinity of the membrane. Sodium tetraborate (Borax) as a crosslinker can increase membrane basicity and glutamic acid (salt) can provide an enhanced transport mechanism, thereby improving the permeability and selectivity of carbon dioxide. FTIR spectra show that the thickness of coating is sufficiently low, while SEM results show that PVA-PEG series have a dense surface, and particles are observed on the surface of MSG/GA series. The gas permeance and separation performance of the composite membrane was tested using a single gas. Results showed that CO 2 had higher permeance (GPU) at lower pressure differential. PEG with an ether group had the greatest effect on improving CO 2 permeance and selectivity. However, MSG and GA with amine groups could not effectively improve CO 2 selectivity due to solubility. The best coating solution was provided by PVA-PEG-1.2. The CO 2 selectivity of the composite membrane was 10.05 with a pressure differential of 1.00 bar in a humid environment and no obvious deterioration was observed over a 10-day period. Borax can improve selectivity, water absorption, and thermal stability while avoiding the need for high temperature and long crosslinking time of aldehydes, which makes it possible to be used in a PVA carbon dioxide separation membrane.

Suggested Citation

  • Angus Shiue & Ming-Jie Yin & Min-Hsuan Tsai & Shu-Mei Chang & Graham Leggett, 2021. "Carbon Dioxide Separation by Polyethylene Glycol and Glutamic Acid/Polyvinyl Alcohol Composite Membrane," Sustainability, MDPI, vol. 13(23), pages 1-27, December.
    • Handle: RePEc:gam:jsusta:v:13:y:2021:i:23:p:13367-:d:693746
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    Citations

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    Cited by:

    1. Mariia Dmitrenko & Ramadan Atta & Andrey Zolotarev & Anna Kuzminova & Sergey Ermakov & Anastasia Penkova, 2022. "Development of Novel Membranes Based on Polyvinyl Alcohol Modified by Pluronic F127 for Pervaporation Dehydration of Isopropanol," Sustainability, MDPI, vol. 14(6), pages 1-23, March.

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