Back to Search
Start Over
Surface tuned polyethersulfone membrane using an iron oxide functionalized halloysite nanocomposite for enhanced humic acid removal
- Source :
- Environmental Research. 204:112113
- Publication Year :
- 2022
- Publisher :
- Elsevier BV, 2022.
-
Abstract
- Nanomodification of ultrafiltration (UF) membranes has been shown to be a simple and efficient technique for the preparation of high-performance membranes. In this work, an iron oxide functionalized halloysite nanoclay (Fe-HNC) nanocomposite was prepared and used as a nanofiller for polyethersulfone (PES) membranes. The effect of Fe-HNC concentration on the filtration performance of the membrane was investigated by varying the nanocomposite dosage (0–0.5 wt. %) in the casting dope. Various characterization studies showed that the incorporation of Fe-HNC nanocomposites improved the membrane morphology and enhanced the surface properties, thermal stability, mechanical strength, hydrophilicity, and porosity. The permeability to pure water and filtration of humic acid (HA) were significantly improved by incorporating Fe-HNC into the PES membranes. The membrane with Fe-HNC loading of 0.1 wt. % exhibited the highest pure water permeability (174.3 L/m2 h bar) and removal of HA (90.1 %), which were 1.8 times and 29 % higher, respectively than the pristine PES membrane. Moreover, fouling studies showed the enhanced antifouling ability of the Fe-HNC nanocomposites modified PES membranes, especially against irreversible fouling. Continuous membrane regeneration-based fouling removal studies from HA showed that the PES/0.1 wt. % Fe-HNC membrane exhibited a high fouling recovery of 70.4 % with very low reversible and irreversible fouling resistance of 9.61 % and 14.78 %, respectively, compared to the pristine PES membrane (fouling recovery: 40.4 %; reversible fouling: 21.7 %; irreversible fouling: 20.1 %). Overall, the Fe-HNC nanocomposite proved to be an effective nanomodifier for improving the permeability of PES membranes and the antifouling ability to treat HA polluted aqueous streams.
- Subjects :
- chemistry.chemical_classification
Nanocomposite
Fouling
Polymers
Ultrafiltration
Membranes, Artificial
engineering.material
Ferric Compounds
Biochemistry
Halloysite
Nanocomposites
Biofouling
Membrane
chemistry
Chemical engineering
engineering
Clay
Humic acid
Thermal stability
Sulfones
Humic Substances
General Environmental Science
Subjects
Details
- ISSN :
- 00139351
- Volume :
- 204
- Database :
- OpenAIRE
- Journal :
- Environmental Research
- Accession number :
- edsair.doi.dedup.....9d35fa1d1ce8dc214bf3e49b6ce9d4ef