E-resources
Peer reviewed
-
Yousef, Samy; Eimontas, Justas; Striūgas, Nerijus; Mohamed, Alaa; Ali Abdelnaby, Mohammed
Chemical engineering journal (Lausanne, Switzerland : 1996), 01/2022, Volume: 428Journal Article
•Pyrolysis behavior of ultrafiltration membranes were studied using TG-FTIR-GC–MS.•The elemental, proximate, and compositional analyses of membranes were measured.•Pyrolysis kinetics of membranes were studied using model-free models.•TGA and DTG curves were simulated using DAEM and IPR models.•Sulfur dioxide, benzene, phenol, and diphenyl ether were the major compounds in GC–MS. This is the first research to be concerned with end-life ultrafiltration polymer nanocomposite membranes and their valorization into high added-value products using the pyrolysis treatment. Polysulfone membrane (PES) as a commercial product and their nanocomposites (CNTs/PES and graphene/PES) were used as a feedstock in the present research. The experiments started with fabrication of membranes loaded with 0.04 wt% of CNTs and graphene (GNs). The elemental analysis and proximate analysis of the fabricated membranes were studied. Subsequently, thermogravimetric coupled with Fourier-transform infrared spectroscopy (TG-FTIR) system was used to study the thermal and chemical decomposition of the membranes at different heating rates (5-30˚C/min). The volatile products released from the pyrolysis process of the membranes were analyzed using TG coupled with gas chromatography–mass spectrometry (GC–MS) unit. Finally, pyrolysis kinetic parameters of PES membrane and its nanocomposites were studied using model-free models. Also, thermogravimetry and differential thermal gravimetry (TG/DTG) experimental data were simulated using the distributed activation energy model and the independent parallel reactions kinetic model with high predictability. The results showed that sulfur dioxide, benzene, phenol, and diphenyl ether compounds represented the main compounds in the released volatile components with high total abundance, especially at high heating rate and estimated at 85% (PES), 94% (CNTs/PES), and 99% (GNs/PES). Meanwhile. the kinetics analysis showed that the whole activation energies decreased significantly in case of nanocomposites by this trend 206.4 kJ/mol (PES), 187.8 kJ/mol (CNTs/PES), and 139.30 kJ/mol (GNs/PES), what indicates that CNTs and GNs act as self-catalysts and end-life polymer membranes can be used as a new source for renewable energy.
![loading ... loading ...](themes/default/img/ajax-loading.gif)
Shelf entry
Permalink
- URL:
Impact factor
Access to the JCR database is permitted only to users from Slovenia. Your current IP address is not on the list of IP addresses with access permission, and authentication with the relevant AAI accout is required.
Year | Impact factor | Edition | Category | Classification | ||||
---|---|---|---|---|---|---|---|---|
JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
Select the library membership card:
If the library membership card is not in the list,
add a new one.
DRS, in which the journal is indexed
Database name | Field | Year |
---|
Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
---|
Source: Personal bibliographies
and: SICRIS
The material is available in full text. If you wish to order the material anyway, click the Continue button.