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Critical review of Pd-based catalytic treatment of priority contaminants in water

Chaplin, Brian P. and Reinhard, Martin and Schneider, William F. and Schüth, Christoph and Shapley, John R. and Strathmann, Timothy J. and Werth, Charles J. (2012):
Critical review of Pd-based catalytic treatment of priority contaminants in water.
In: Environmental Science and Technology, American Chemical Society, pp. 3655-3670, 46, (7), ISSN 0013936X, DOI: 10.1021/es204087q, [Online-Edition: http://pubs.acs.org/doi/10.1021/es204087q],
[Article]

Abstract

Catalytic reduction of water contaminants using palladium (Pd)-based catalysts and hydrogen gas as a reductant has been extensively studied at the bench-scale, but due to technical challenges it has only been limitedly applied at the field-scale. To motivate research that can overcome these technical challenges, this review critically analyzes the published research in the area of Pd-based catalytic reduction of priority drinking water contaminants (i.e., halogenated organics, oxyanions, and nitrosamines), and identifies key research areas that should be addressed. Specifically, the review summarizes the state of knowledge related to (1) proposed reaction pathways for important classes of contaminants, (2) rates of contaminant reduction with different catalyst formulations, (3) long-term sustainability of catalyst activity with respect to natural water foulants and regeneration strategies, and (4) technology applications. Critical barriers hindering implementation of the technology are related to catalyst activity (for some contaminants), stability, fouling, and regeneration. New developments overcoming these limitations will be needed for more extensive field-scale application of this technology.

Item Type: Article
Erschienen: 2012
Creators: Chaplin, Brian P. and Reinhard, Martin and Schneider, William F. and Schüth, Christoph and Shapley, John R. and Strathmann, Timothy J. and Werth, Charles J.
Title: Critical review of Pd-based catalytic treatment of priority contaminants in water
Language: English
Abstract:

Catalytic reduction of water contaminants using palladium (Pd)-based catalysts and hydrogen gas as a reductant has been extensively studied at the bench-scale, but due to technical challenges it has only been limitedly applied at the field-scale. To motivate research that can overcome these technical challenges, this review critically analyzes the published research in the area of Pd-based catalytic reduction of priority drinking water contaminants (i.e., halogenated organics, oxyanions, and nitrosamines), and identifies key research areas that should be addressed. Specifically, the review summarizes the state of knowledge related to (1) proposed reaction pathways for important classes of contaminants, (2) rates of contaminant reduction with different catalyst formulations, (3) long-term sustainability of catalyst activity with respect to natural water foulants and regeneration strategies, and (4) technology applications. Critical barriers hindering implementation of the technology are related to catalyst activity (for some contaminants), stability, fouling, and regeneration. New developments overcoming these limitations will be needed for more extensive field-scale application of this technology.

Journal or Publication Title: Environmental Science and Technology
Volume: 46
Number: 7
Publisher: American Chemical Society
ISBN: 0013-936X
Divisions: 11 Department of Materials and Earth Sciences
11 Department of Materials and Earth Sciences > Earth Science
11 Department of Materials and Earth Sciences > Earth Science > Hydrogeology
Date Deposited: 17 Apr 2018 12:30
DOI: 10.1021/es204087q
Official URL: http://pubs.acs.org/doi/10.1021/es204087q
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