Upcycling of Plastic Waste Into Multi-Walled Carbon Nanotubes as Efficient Organic Dye Adsorbent
Creators
- 1. Faculty of Technology and Metallurgy, Ss. Cyril and Methodius University - Skopje, 1000 Skopje, R.N. Macedonia
- 2. Research Center for Environment and Materials, Macedonian Academy of Sciences and Arts, Skopje, R.N. Macedonia
- 3. Institute of Chemistry, Faculty of Natural Sciences and Mathematics, Ss. Cyril and Methodius University, 1000 Skopje, R.N. Macedonia
- 4. National Institute of Chemistry, Hajdrihova 19, 1001 Ljubljana, Slovenia
- 5. Catalysis and Organic Synthesis research group, Laboratory for Organic and Polymer Chemistry, Faculty of Chemistry and Chemical Engineering, University of Maribor, Smetanova 17, SI-2000 Maribor, Slovenia
Description
Acta Chim. Slov. 2025, 72, 154–163. DOI: 10.17344/acsi.2025.9145
Abstract
Multi-walled CNTs with an average diameter of about 80 nm, a length of several micrometers and surface area (SBET) of 100 m2 g–1 were obtained by pyrolysis of low-density polyethylene waste. The potential of the resulting MWCNTs material to purify water containing organic dyes was tested with Bezaktiv Blau HE-RM (BB) and Bezaktiv Rot S-3B (BR) reactive dyes. 200 mg L–1 MWCNT material was used to follow the adsorption of 30 mg L–1, 40 mg L–1, 50 mg L–1 and 60 mg L–1 BB and BR at pH 3 and a temperature of ~25 oC. The results have shown that this material has a high potential as a sorbent, and its adsorption capacity of 257 mg g–1 (for Bezaktiv Blau HE-RM) and 213 mg g–1 (for Bezaktiv Rot) is close to some commercial MWCNTs and functionalized MWCNT-based adsorbents. The adsorption process was very fast, reaching 80–90 % of the dye removal in 10–15 minutes, and the equilibrium time was reached in 40–60 minutes. The adsorption isotherm showed that the Langmuir model was more suitable than the Freundlich model for describing the adsorption properties of the pollutants.
Files
67c5c5cb77d26.pdf
Files
(1.0 MB)
| Name | Size | Download all |
|---|---|---|
|
Checksum: md5:b4d5749fd00d6240f74a7625a85322aa
PID: http://hdl.handle.net/11304/27dfc026-261e-4227-9872-0adc7aee282d |
1.0 MB | Preview Download |
|
Checksum: md5:02fe1b923c55a589d0a645756635762d
PID: http://hdl.handle.net/11304/a7177bee-4d3e-42ac-9c72-8a2867eea85c |
3.6 kB | Preview Download |
Additional details
Identifiers
- Other
- Acta Chim. Slov. 2025, 72, 154–163
- DOI
- 10.17344/acsi.2025.9145
- PMID
- 40109043
Related works
- Is identical to
- Journal article: 10.17344/acsi.2025.9145 (DOI)