PVA/nanocellulose nanocomposite membranes for CO2 separation from flue gas

[Display omitted] •Nanocellulose can be used to improve CO2 separation membranes.•Nanocellulose may replace carbon nanotubes in membranes.•High charge and uniform nanoscopic size are favorable nanocellulose properties. In this paper, we explore the use of nanocelluloses as an additive to poly (vinyl...

Full description

Saved in:
Bibliographic Details
Published in:International journal of greenhouse gas control 2019-02, Vol.81, p.93-102
Main Authors: Torstensen, Jonathan Ø., Helberg, Ragne M.L., Deng, Liyuan, Gregersen, Øyvind W., Syverud, Kristin
Format: Article
Language:English
Subjects:
Carbon dioxide
Carbon nanotubes
CCS
Cellulose
Composite membranes
Nanocellulose
Nanocomposite membrane
Nanocomposites
Polyvinyl alcohols
PVA
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:[Display omitted] •Nanocellulose can be used to improve CO2 separation membranes.•Nanocellulose may replace carbon nanotubes in membranes.•High charge and uniform nanoscopic size are favorable nanocellulose properties. In this paper, we explore the use of nanocelluloses as an additive to poly (vinyl alcohol) (PVA) nanocomposite membranes for CO2/N2 mixed-gas separation. Our findings are that several types of nanocellulose can be used to improve membrane performance. PVA/cellulose nanocrystals (CNC) nanocomposite membranes have the most promising performance, with increased CO2 permeance (127.8 ± 5.5 GPU) and increased CO2/N2 separation factor (39 ± 0.4) compared to PVA composite membranes, with permeance 105.5 ± 1.9 GPU and separation factor 36 ± 0.5. The performance of PVA/CNC membranes is similar compared to PVA/carbon nanotubes (CNTs) membranes shown earlier. Thus, CNTs can be replaced by CNC that is biodegradable and non-toxic. Investigating several different nanocellulose types reveal that a high nanocellulose charge and small nanocellulose particles are important nanocellulose traits that improve membrane performance.
ISSN:1750-5836
1878-0148
1878-0148
DOI:10.1016/j.ijggc.2018.10.007