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Cited by 289

The DOI matches its Crossref record; 28 of the 28 references it cites were found in a registry or an index.

Iron Promoted Reduction of Chromate by Dissimilatory Iron-Reducing Bacteria

Wielinga, Bruce, Mizuba, Midori M., Hansel, Colleen M., Fendorf, Scott·2001·Environmental Science & Technology
DOI 10.1021/es001457b
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Abstract

Chromate is a priority pollutant within the U.S. and many other countries, the hazard of which can be mitigated by reduction to the trivalent form of chromium. Here we elucidate the reduction of Cr(VI) to Cr(III) via a closely coupled, biotic-abiotic reductive pathway under iron-reducing conditions. Injection of chromate into stirred-flow reactors containing Shewanella alga strain BrY and iron (hydr)oxides of varying stabilities results in complete reduction to Cr(III). The maximum sustainable Cr(VI) reduction rate was 5.5 micrograms CrVI.mg-cell-1.h-1 within ferric (hydr)oxide suspensions (surface area 10 m2). In iron limited systems (having HEPES as a buffer), iron was cycled suggesting it acts in a catalytic-type manner for the bacterial reduction of Cr(VI). BrY also reduced Cr(VI) directly; however, the rate of direct (enzymatic) reduction is considerably slower than by Fe(II)(aq) and is inhibited within 20 h due to chromate toxicity. Thus, dissimilatory iron reduction may provide a primary pathway for the sequestration and detoxification of chromate in anaerobic soils and water.

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Metadata

Authors
Wielinga, B., Mizuba, M. M., Hansel, C. M., & Fendorf, S.
Venue
Environmental Science & Technology
Publisher
American Chemical Society (ACS)
Published
2000-12-23
Volume
35
Issue
3
Pages
522-527
ISSN
  • 0013-936X (ISSN-L)
  • 1520-5851
DOI
10.1021/es001457b
OpenAlex
W2009796998
Cited by
289
References
28
FWCI
7.83
Type
journal article
Language
en
Open access
closed

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Bibliographic data: Semantic Scholar, OpenAlex, Crossref.

Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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