Journal article
A Polymer Membrane Containing Fe0 as a Contaminant Barrier
Environmental science & technology, Vol.38(7), pp.2264-2270
04/01/2004
DOI: 10.1021/es034601c
Abstract
A poly(vinyl alcohol) (PVA) membrane containing iron (Fe0) particles was developed and tested as a model barrier for contaminant containment. Carbon tetrachloride, copper (Cu2+), nitrobenzene, 4-nitroacetophenone, and chromate (CrO4 2-) were selected as model contaminants. Compared with a pure PVA membrane, the Fe0/PVA membrane can increase the breakthrough lag time for Cu2+ and carbon tetrachloride by more than 100-fold. The increase in the lag time was smaller for nitrobenzene and 4-nitroacetophenone, which stoichiometrically require more iron and for which the PVA membrane has a higher permeability. The effect of Fe0 was even smaller for CrO4 2- because of its slow reaction. Forty-five percent of the iron, based on the content in the dry membrane prior to hydration, was consumed by reaction with Cu2+ and 15% by reaction with carbon tetrachloride. Similarly, 25%, 17%, and 6% of the iron was consumed by nitrobenzene, 4-nitroacetophenone, and CrO4 2-, respectively. These percentages approximately double when the loss of iron during membrane hydration is considered. The permeability of the Fe0/PVA membrane after breakthrough was within a factor of 3 for that of pure PVA, consistent with theory. These results suggest that polymer membranes with embedded Fe0 have potential as practical contaminant barriers.
Details
- Title: Subtitle
- A Polymer Membrane Containing Fe0 as a Contaminant Barrier
- Creators
- Tsutomu ShimotoriEric E NuxollEdward L CusslerWilliam A Arnold
- Resource Type
- Journal article
- Publication Details
- Environmental science & technology, Vol.38(7), pp.2264-2270
- Publisher
- American Chemical Society
- DOI
- 10.1021/es034601c
- ISSN
- 0013-936X
- eISSN
- 1520-5851
- Language
- English
- Date published
- 04/01/2004
- Academic Unit
- Chemical and Biochemical Engineering; Pharmaceutical Sciences and Experimental Therapeutics
- Record Identifier
- 9984003962702771
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