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

Angus Shiue, Ming-Jie Yin, Min-Hsuan Tsai, Shu-Mei Chang and Graham Leggett
Additional contact information
Angus Shiue: Graduate Institute of Organic and Polymeric Materials, National Taipei University of Technology, Taipei 106, Taiwan
Ming-Jie Yin: Beijing Key Laboratory for Green Catalysis and Separation, Department of Environmental and Chemical Engineering, Beijing University of Technology, Beijing 100124, China
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
Graham Leggett: LI-COR Biosciences, Cambridge CB4 0WS, UK

Sustainability, 2021, vol. 13, issue 23, 1-27

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.

Keywords: carbon dioxide; polyvinyl alcohol; polyethylene glycol; Borax; monosodium glutamate; glutamic acid; reverse osmosis membrane (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2021
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
https://www.mdpi.com/2071-1050/13/23/13367/pdf (application/pdf)
https://www.mdpi.com/2071-1050/13/23/13367/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jsusta:v:13:y:2021:i:23:p:13367-:d:693746

Access Statistics for this article

Sustainability is currently edited by Ms. Alexandra Wu

More articles in Sustainability from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().