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A Novel Aerobic Mechanism for Reductive Palladium Biomineralization and Recovery by Escherichia coli

Foulkes, JM and Deplanche, K and Sargent, F and Macaskie, LE and Lloyd, JR (2016) A Novel Aerobic Mechanism for Reductive Palladium Biomineralization and Recovery by Escherichia coli. Geomicrobiology Journal, 33 (3-4). pp. 230-236. ISSN 1521-0529

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s1-ln20821948-351862878-1939656818Hwf-1436202760IdV-182399796720821948PDF_HI0001.pdf - Accepted Version

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Abstract

Aerobically grown E. coli cells reduced Pd(II) via a novel mechanism using formate as the electron donor. This reduction was monitored in real-time using extended X-ray absorption fine structure. Transmission electron microscopy analysis showed that Pd(0) nanoparticles, confirmed by X-ray diffraction, were precipitated outside the cells. The rate of Pd(II) reduction by E. coli mutants deficient in a range of oxidoreductases was measured, suggesting a molybdoprotein-mediated mechanism, distinct from the hydrogenase-mediated Pd(II) reduction previously described for anaerobically grown E. coli cultures. The potential implications for Pd(II) recovery and bioPd catalyst fabrication are discussed.

Item Type: Article
Additional Information: This is an Accepted Manuscript of an article published by Taylor & Francis Group in Geomicrobiology Journal on 25/02/2016, available online: http://dx.doi.org/10.1080/01490451.2015.1069911
Uncontrolled Keywords: 0403 Geology, 0605 Microbiology
Subjects: Q Science > QR Microbiology
Divisions: Pharmacy & Biomolecular Sciences
Publisher: Taylor & Francis
Date Deposited: 29 Apr 2016 09:25
Last Modified: 25 Feb 2017 00:50
DOI or Identification number: 10.1080/01490451.2015.1069911
URI: http://researchonline.ljmu.ac.uk/id/eprint/3544

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