Journal
ENVIRONMENTAL SCIENCE & TECHNOLOGY
Volume 48, Issue 7, Pages 4129-4136Publisher
AMER CHEMICAL SOC
DOI: 10.1021/es4037012
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Funding
- National Science Foundation (CBET) [1067564]
- Oasys Water
- Department of Energy [DE-EE00003226]
- Div Of Chem, Bioeng, Env, & Transp Sys
- Directorate For Engineering [1067564] Funding Source: National Science Foundation
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Sustainable energy can be harnessed from fluids of differing salinity using a process known as pressure-retarded osmosis (PRO). We address one of the critical challenges of advance PRO by introducing a novel electrospun nanofiber-supported thin-film composite PRO membrane platform. The support was tiered with layers of nanofibers of different diameters to better withstand hydraulic pressure. The membranes successfully withstood an applied hydraulic pressure of 11.5 bar and exhibited performance that would produce an equivalent peak power density near 8.0 W/m(2) under real conditions (using 0.5 M NaCl and deionized water as the draw and feed solutions, respectively). This result shows the immense promise of nanofiber supported thin-film composite membranes for use in PRO.
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