Biogas upgrading with novel cellulose nano-crystals and polyvinyl amine nanocomposite membranes

Saeed, U, Jahan, Z, Niazi, MBK, Pervaiz, E and Sher, F ORCID: https://orcid.org/0000-0003-2890-5912, 2020. Biogas upgrading with novel cellulose nano-crystals and polyvinyl amine nanocomposite membranes. Polymer Testing, 91: 106867. ISSN 0142-9418

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Abstract

A novel crystalline nano cellulose (CNC) and polyvinyl amine (PVAm) based nanocomposite membranes were synthesized and evaluated for biogas upgrading. Different concentrations of CNC was incorporated in 3 wt % PVAm solution on commercial polysulfone (PSf) sheet using dip coating method. The effect of feed pressure (5, 10 and 15 bar) was investigated for the CO2/CH4 separation. The incorporation of CNC increased the crystallinity of membranes. The thickness of selective layer enhanced to 2.16 μm from 1.5 μm with increasing concentration of CNC. However, degree of swelling reduced from 75.88% to 68.93 with CNC concentration at 1.5 wt%. The best results were shown by PVAm membrane with 1 wt % CNC concentration i.e. CO2 permeance of 0.0216 m3(STP)/m2.bar.hr and selectivity (CO2/CH4) of 41.The permeance decreased approximately 1.8 folds for PVAm/1CNC membrane with the increase in pressure from 5 to 15 bar. However, selectivity dropped from 41 to 39 for formulated membranes.

Item Type:	Journal article
Publication Title:	Polymer Testing
Creators:	Saeed, U., Jahan, Z., Niazi, M.B.K., Pervaiz, E. and Sher, F.
Publisher:	Elsevier BV
Date:	November 2020
Volume:	91
ISSN:	0142-9418
Identifiers:	Number Type 10.1016/j.polymertesting.2020.106867 DOI S0142941820320961 Publisher Item Identifier 1567922 Other
Rights:	© 2020 Elsevier Ltd.
Divisions:	Schools > School of Science and Technology
Record created by:	Linda Sullivan
Date Added:	26 Jul 2022 10:25
Last Modified:	26 Jul 2022 10:25
URI:	https://irep.ntu.ac.uk/id/eprint/46723

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