A Strategical Improvement in the Performance of CO<sub>2</sub>/N<sub>2</sub> Gas Permeation via Conjugation of L-Tyrosine onto Chitosan Membrane
Rubbery polymeric membranes, containing amine carriers, have received much attention in CO<sub>2</sub> separation because of their easy fabrication, low cost, and excellent separation performance. The present study focuses on the versatile aspects of covalent conjugation of L-tyrosine (T...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-04-01
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| Series: | Membranes |
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| Online Access: | https://www.mdpi.com/2077-0375/13/5/487 |
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| author | Aviti Katare Rajashree Borgohain Babul Prasad Bishnupada Mandal |
| author_facet | Aviti Katare Rajashree Borgohain Babul Prasad Bishnupada Mandal |
| author_sort | Aviti Katare |
| collection | DOAJ |
| description | Rubbery polymeric membranes, containing amine carriers, have received much attention in CO<sub>2</sub> separation because of their easy fabrication, low cost, and excellent separation performance. The present study focuses on the versatile aspects of covalent conjugation of L-tyrosine (Tyr) onto the high molecular weight chitosan (CS) accomplished by using carbodiimide as a coupling agent for CO<sub>2</sub>/N<sub>2</sub> separation. The fabricated membrane was subjected to FTIR, XRD, TGA, AFM, FESEM, and moisture retention tests to examine the thermal and physicochemical properties. The defect-free dense layer of tyrosine-conjugated-chitosan, with active layer thickness within the range of ~600 nm, was cast and employed for mixed gas (CO<sub>2</sub>/N<sub>2</sub>) separation study in the temperature range of 25−115 °C in both dry and swollen conditions and compared to that of a neat CS membrane. An enhancement in the thermal stability and amorphousness was displayed by TGA and XRD spectra, respectively, for the prepared membranes. The fabricated membrane showed reasonably good CO<sub>2</sub> permeance of around 103 GPU and CO<sub>2</sub>/N<sub>2</sub> selectivity of 32 by maintaining a sweep/feed moisture flow rate of 0.05/0.03 mL/min, respectively, an operating temperature of 85 °C, and a feed pressure of 32 psi. The composite membrane demonstrated high permeance because of the chemical grafting compared to the bare chitosan. Additionally, the excellent moisture retention capacity of the fabricated membrane accelerates high CO<sub>2</sub> uptake by amine carriers, owing to the reversible zwitterion reaction. All the features make this membrane a potential membrane material for CO<sub>2</sub> capture. |
| first_indexed | 2024-03-11T03:30:18Z |
| format | Article |
| id | doaj.art-58dcd17221884654ac1971cd9aa1e5b8 |
| institution | Directory Open Access Journal |
| issn | 2077-0375 |
| language | English |
| last_indexed | 2024-03-11T03:30:18Z |
| publishDate | 2023-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Membranes |
| spelling | doaj.art-58dcd17221884654ac1971cd9aa1e5b82023-11-18T02:24:07ZengMDPI AGMembranes2077-03752023-04-0113548710.3390/membranes13050487A Strategical Improvement in the Performance of CO<sub>2</sub>/N<sub>2</sub> Gas Permeation via Conjugation of L-Tyrosine onto Chitosan MembraneAviti Katare0Rajashree Borgohain1Babul Prasad2Bishnupada Mandal3Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, IndiaDepartment of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, IndiaWilliam G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, OH 43210-1350, USADepartment of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, IndiaRubbery polymeric membranes, containing amine carriers, have received much attention in CO<sub>2</sub> separation because of their easy fabrication, low cost, and excellent separation performance. The present study focuses on the versatile aspects of covalent conjugation of L-tyrosine (Tyr) onto the high molecular weight chitosan (CS) accomplished by using carbodiimide as a coupling agent for CO<sub>2</sub>/N<sub>2</sub> separation. The fabricated membrane was subjected to FTIR, XRD, TGA, AFM, FESEM, and moisture retention tests to examine the thermal and physicochemical properties. The defect-free dense layer of tyrosine-conjugated-chitosan, with active layer thickness within the range of ~600 nm, was cast and employed for mixed gas (CO<sub>2</sub>/N<sub>2</sub>) separation study in the temperature range of 25−115 °C in both dry and swollen conditions and compared to that of a neat CS membrane. An enhancement in the thermal stability and amorphousness was displayed by TGA and XRD spectra, respectively, for the prepared membranes. The fabricated membrane showed reasonably good CO<sub>2</sub> permeance of around 103 GPU and CO<sub>2</sub>/N<sub>2</sub> selectivity of 32 by maintaining a sweep/feed moisture flow rate of 0.05/0.03 mL/min, respectively, an operating temperature of 85 °C, and a feed pressure of 32 psi. The composite membrane demonstrated high permeance because of the chemical grafting compared to the bare chitosan. Additionally, the excellent moisture retention capacity of the fabricated membrane accelerates high CO<sub>2</sub> uptake by amine carriers, owing to the reversible zwitterion reaction. All the features make this membrane a potential membrane material for CO<sub>2</sub> capture.https://www.mdpi.com/2077-0375/13/5/487CO<sub>2</sub>/N<sub>2</sub> separationchitosanL-tyrosinegraftingbiopolymeramino acid |
| spellingShingle | Aviti Katare Rajashree Borgohain Babul Prasad Bishnupada Mandal A Strategical Improvement in the Performance of CO<sub>2</sub>/N<sub>2</sub> Gas Permeation via Conjugation of L-Tyrosine onto Chitosan Membrane Membranes CO<sub>2</sub>/N<sub>2</sub> separation chitosan L-tyrosine grafting biopolymer amino acid |
| title | A Strategical Improvement in the Performance of CO<sub>2</sub>/N<sub>2</sub> Gas Permeation via Conjugation of L-Tyrosine onto Chitosan Membrane |
| title_full | A Strategical Improvement in the Performance of CO<sub>2</sub>/N<sub>2</sub> Gas Permeation via Conjugation of L-Tyrosine onto Chitosan Membrane |
| title_fullStr | A Strategical Improvement in the Performance of CO<sub>2</sub>/N<sub>2</sub> Gas Permeation via Conjugation of L-Tyrosine onto Chitosan Membrane |
| title_full_unstemmed | A Strategical Improvement in the Performance of CO<sub>2</sub>/N<sub>2</sub> Gas Permeation via Conjugation of L-Tyrosine onto Chitosan Membrane |
| title_short | A Strategical Improvement in the Performance of CO<sub>2</sub>/N<sub>2</sub> Gas Permeation via Conjugation of L-Tyrosine onto Chitosan Membrane |
| title_sort | strategical improvement in the performance of co sub 2 sub n sub 2 sub gas permeation via conjugation of l tyrosine onto chitosan membrane |
| topic | CO<sub>2</sub>/N<sub>2</sub> separation chitosan L-tyrosine grafting biopolymer amino acid |
| url | https://www.mdpi.com/2077-0375/13/5/487 |
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