Skip to main content

A Comparison of the Rates of Fe(III) Reduction in Synthetic and Bacteriogenic Iron Oxides by Shewanella putrefaciens CN32

Buy Article:

$60.90 plus tax (Refund Policy)


The susceptibility of various bacteriogenic iron oxides (BIOS) to bacterial Fe(III) reduction was examined. Reduction resulted in complete dissolution of the iron mineral from the surfaces of the Fe-oxidizing consortium. Reduction rates were compared to that of synthetic ferrihydrite (HFO). The reduction rate of HFO (0.162 day- 1) was significantly lower than that of Aspo (Gallionella dominated) BIOS (0.269 day- 1). Two Canadian (Leptothrix dominated) BIOS samples showed statistically equivalent rates of reduction (0.541 day-1 and 0.467 day- 1), which were higher than both Aspo BIOS and HFO. BIOS produced by different iron-oxidizing genera have different susceptibilities to microbial reduction.

Keywords: BIOS; Shewanella putrefaciens; ferrihydrite; iron reduction

Document Type: Research Article


Affiliations: 1: Department of Earth Sciences, University of Ottawa, Ottawa, Ontario, Canada 2: Environmental Technologies Branch, Chalk River Laboratories, Atomic Energy of Canada Ltd., Ontario, Canada 3: Department of Geology, Earth Sciences Centre, Toronto, Ontario, Canada

Publication date: March 1, 2009

More about this publication?

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more