2012 Progress Report: Research and Demonstration of Electrospun Nanofiber Filters: Multifunctional, Chemically Active Filtration Technologies for Small-Scale Water Treatment Systems

EPA Grant Number: R835177
Title: Research and Demonstration of Electrospun Nanofiber Filters: Multifunctional, Chemically Active Filtration Technologies for Small-Scale Water Treatment Systems
Investigators: Cwiertny, David M. , Myung, Nosang V. , Parkin, Gene F
Institution: University of Iowa , University of California - Riverside
EPA Project Officer: Hiscock, Michael
Project Period: December 1, 2011 through November 30, 2016
Project Period Covered by this Report: December 1, 2011 through November 30,2012
Project Amount: $499,466
RFA: Research and Demonstration of Innovative Drinking Water Treatment Technologies in Small Systems (2011) RFA Text |  Recipients Lists
Research Category: Drinking Water , Water

Objective:

This research and demonstration plan aims to fabricate multi-component nanofiber mats via a novel synthesis approach, electrospinning, and optimize their performance as chemically active filtration technologies for water treatment across a range of scales and chemistries.

Progress Summary:

Results from Year 1 have demonstrated our ability to synthesize each of the proposed nanofibers (i.e., titanium dioxide, iron oxide, and carbon nanofibers), and our ability to use electrospinning as a versatile platform to optimize their properties and reactivity. To date, most reactivity studies have been conducted with photocatalytically active titanium dioxide (TiO2), and we have been able to optimize nanofiber performance via systematic tailoring of nanofiber composition, diameter, crystal phase and grain size. Further, we have successfully integrated surface dopants (gold nanoparticles) to produce a photocatalyst capable of oxidizing some of the most persistent organic micropollutants at rates exceeding commercially available photocatalysts (e.g., P25).

Future Activities:

Ongoing experiments include reactivity optimization of carbon and iron oxide nanofibers as sorbents, the controlled deposition and growth of nanofibers on substrates suitable for use in filtration, construction of a microfiltration unit capable of evaluating nanofiber mat behavior under dynamic flow regimes, and testing of nanofibers under water chemistries simulating treatment.


Journal Articles on this Report : 1 Displayed | Download in RIS Format

Other project views: All 21 publications 9 publications in selected types All 9 journal articles
Type Citation Project Document Sources
Journal Article Nalbandian MJ, Zhang M, Sanchez J, Kim S, Choa Y-H, Cwiertny DM, Myung NV. Synthesis and optimization of Ag–TiO2 composite nanofibers for photocatalytic treatment of impaired water sources. Journal of Hazardous Materials 2015;299:141-148. R835177 (2012)
R835177 (Final)
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  • Abstract: ScienceDirect-Abstract
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  • Supplemental Keywords:

    decentralized treatment, point of use treatment, nanotechnology, water reuse, catalysis, water treatment, wastewater treatment;

    Relevant Websites:

    David Cwiertny | College of Engineering | The University of Iowa Exit
    Professor Nosang V. Myung | University of California, Riverside Exit
    Gene F. Parkin | College of Engineering | The University of Iowa Exit

    Progress and Final Reports:

    Original Abstract
  • 2013 Progress Report
  • 2014 Progress Report
  • 2015 Progress Report
  • Final Report