Journal article
Phosphate removal using surface enriched hematite and tetra-n-butylammonium bromide incorporated polyacrylonitrile composite nanofibers
The Science of the total environment, Vol.770, pp.145364-145364
05/20/2021
DOI: 10.1016/j.scitotenv.2021.145364
PMID: 33736373
Abstract
The nanosized iron oxides-based adsorbent has been widely used to alleviate water eutrophication. However, it is challenging to industrialize the application of nanosized iron oxides-based adsorbent due to their poor stability, difficult separation and recovery. Herein, hematite and tetra-n-butylammonium bromide incorporated polyacrylonitrile (PAN/Fe
O
/TBAB) composite nanofibers with a controlled diameter (i.e., 66 to 305 nm) and composition were systematically synthesized as an adsorbent for phosphate removal from water using surfactant-mediated electrospinning. During the electrospinning process, polar TBAB surfactant enhanced the migration of Fe
O
nanoparticles toward the surface of nanofibers resulting in Fe
O
nanoparticles/TBAB surface enriched nanofibers. The synthesized nanofiber membranes were used for phosphate removal, and their adsorption kinetics, adsorption mechanism, and reusability were investigated. Data showed that adsorption kinetic followed the pseudo-second-order model whereas the adsorption mechanism follows the Langmuir model. The phosphate removal was mainly derived from the chemisorption of surface-enriched α-Fe
O
nanoparticles at acidic and circumneutral pH values, with a small contribution from anion exchange at TBAB sites. The maximum phosphate removal capacity was approx. 8.76 mg/g (i.e., 23.1 mg/g, P/active materials) at pH 3. Additionally, the synthesized nanofiber membrane also shows excellent reusability.
Details
- Title: Subtitle
- Phosphate removal using surface enriched hematite and tetra-n-butylammonium bromide incorporated polyacrylonitrile composite nanofibers
- Creators
- Chengshuang Wang - University of California, RiversideSooyoun Yu - University of California, RiversideDavid M Cwiertny - University of IowaYadong Yin - University of California, RiversideNosang V Myung - University of California, Riverside
- Resource Type
- Journal article
- Publication Details
- The Science of the total environment, Vol.770, pp.145364-145364
- DOI
- 10.1016/j.scitotenv.2021.145364
- PMID
- 33736373
- ISSN
- 0048-9697
- eISSN
- 1879-1026
- Grant note
- DOI: 10.13039/100012039, name: Yancheng Institute of Technology, award: KJC2014001; DOI: 10.13039/501100001809, name: National Natural Science Foundation of China, award: 51903217; DOI: 10.13039/100000001, name: National Science Foundation; DOI: 10.13039/100000146, name: Division of Chemical, Bioengineering, Environmental, and Transport Systems, award: 1804757
- Language
- English
- Date published
- 05/20/2021
- Academic Unit
- Center for Health Effects of Environmental Contamination; Civil and Environmental Engineering; Public Policy Center (Archive); Chemistry; Chemical and Biochemical Engineering
- Record Identifier
- 9984197249002771
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