Journal article
Mechanically durable tri-composite polyamide 6/hematite nanoparticle/tetra-n-butylammonium bromide (PA6/α-Fe2O3/TBAB) nanofiber based membranes for phosphate remediation
Frontiers in chemistry, Vol.12, 1472640
09/09/2024
DOI: 10.3389/fchem.2024.1472640
Abstract
Essential properties for a Point of Use (POU) water filter include maintaining high removal capacity and rate, with excellent mechanical properties to withstand pressure drop. Herein, mechanically robust tri-composite polyamide 6/iron oxide nanoparticles/tetra-n-butylammonium bromide (PA6/α-Fe 2 O 3 /TBAB) nanofiber composite membranes were electrospun for phosphate (P) remediation, where the diameter and composition were tuned by controlling solution compositions and electrospinning conditions. Tri-composite composition and morphology affect phosphate uptake where the adsorption capacity followed Langmuir isotherm whereas the adsorption kinetics followed pseudo second order behavior. Mechanical properties (i.e., Young’s Modulus ( E ) and toughness) were significantly influenced by the composition and morphology of the tri-composite, as well. Although additional TBAB and iron oxide decreased toughness, there are optimum composition ranges which resulted in maximum Young’s Modulus. Of the synthesized nanofiber membranes, PA6/α-Fe 2 O 3 /TBAB nanofibers with 17% α-Fe 2 O 3 and 2% TBAB showed excellent phosphate uptake capacity [i.e. , 8.9 mg/g (52 mg of P/g of α-Fe 2 O 3 )] while it is bendable, stretchable, and able to plastically deform without fracturing (i.e., Young’s modulus of 2.06 × 10 8 Pa and Toughness of 1.35 × 10 6 J m −3 ). With concerns over the impact of P on water resources and the long-term availability of limited P resources, this tri-composite membrane is well suited for applications in both wastewater treatment and resource recovery.
Details
- Title: Subtitle
- Mechanically durable tri-composite polyamide 6/hematite nanoparticle/tetra-n-butylammonium bromide (PA6/α-Fe2O3/TBAB) nanofiber based membranes for phosphate remediation
- Creators
- Yun Young Choi - University of Notre DameDung Thi Hanh To - University of Notre DameSewoon KimDavid M. CwiertnyNosang V. Myung - University of Notre Dame
- Resource Type
- Journal article
- Publication Details
- Frontiers in chemistry, Vol.12, 1472640
- Publisher
- FRONTIERS MEDIA SA
- DOI
- 10.3389/fchem.2024.1472640
- ISSN
- 2296-2646
- eISSN
- 2296-2646
- Grant note
- NSF PFI: 1940777
The author(s) declare that financial support was received for the research, authorship, and/or publication of this article. This work was funded by NSF PFI (#1940777).
- Language
- English
- Date published
- 09/09/2024
- Academic Unit
- Center for Health Effects of Environmental Contamination; Chemistry; IIHR--Hydroscience and Engineering; Chemical and Biochemical Engineering; Civil and Environmental Engineering
- Record Identifier
- 9984702846602771
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