Electrochemical Study of Interaction of Bacteria and Clay

Oe, Koffi; Be, Bile; Bengourram, Jamaâ; Tankiouine, Safae; Latrache, Hassan; Chtaini, Abdelilah

doi:10.4172/1948-5948.1000263

J Microb Biochem Technol

2016

DOI: 10.4172/1948-5948.1000263

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Electrochemical Study of Interaction of Bacteria and Clay

Koffi Oe¹,

Bile Be²,

Jamaâ Bengourram³

et al.

Abstract: Voltammetric experiments were performed using a voltalab potentiostat (model PGSTAT100, EcoChemie B.V., Utrecht, The Netherlands) driven by the general purpose electrochemical systems data processing software (voltalab master 4 software) run under

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Electron Transfer of <i>Shewanella oneidensis</i> MR-1 at Clay-Modified ITO Electrode

Alshehri¹,

Fitch²

2019

AJAC

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The electrode material is an important aspect for the efficiency and costs in the microbial fuel cells (MFCs). Enhancing of current production and bacteria attachment to the electrode are essential goals for developing the performance of MFCs. In this study, the role of the structural iron present in clays in enhancing the electron transfer of Shewanella oneidensis MR-1 was investigated. Two types of clay containing different amounts of iron situated in the octahedral sites were used to modify ITO (indium tin oxide) electrodes, namely nontronite NAu-1, and montmorillonite (Wyoming) SWy-1. Synthetic montmorillonite SYn-1 which is iron-free clay was used for comparison. The interaction between the bacterial cells and the clays was studied by potential-step chronoamperometry, cyclic voltammetry, confocal microscopy, and scanning electron microscopy (SEM). The obtained results showed that the current densities generated upon ITO electrode modification using the NAu-1 and SWy-1 iron-containing clays were 19 and 3 times higher than that produced using the bare ITO electrode. No current density was obtained when utilizing the synthetic montmorillonite SYn-1 clay. SEM and confocal microscopy observations confirmed the increased coverage percentage of the bacterial cells attached to the clay-modified electrodes compared to the bare ITO.

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Electron Transfer of <i>Shewanella oneidensis</i> MR-1 at Clay-Modified ITO Electrode

Alshehri¹,

Fitch²

2019

AJAC

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show abstract

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Electrochemical Study of Interaction of Bacteria and Clay

Abstract: Voltammetric experiments were performed using a voltalab potentiostat (model PGSTAT100, EcoChemie B.V., Utrecht, The Netherlands) driven by the general purpose electrochemical systems data processing software (voltalab master 4 software) run under

Cited by 1 publication

References 11 publications

Electron Transfer of <i>Shewanella oneidensis</i> MR-1 at Clay-Modified ITO Electrode

Electron Transfer of <i>Shewanella oneidensis</i> MR-1 at Clay-Modified ITO Electrode

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Electrochemical Study of Interaction of Bacteria and Clay

Abstract: Voltammetric experiments were performed using a voltalab potentiostat (model PGSTAT100, EcoChemie B.V., Utrecht, The Netherlands) driven by the general purpose electrochemical systems data processing software (voltalab master 4 software) run under

Cited by 1 publication

References 11 publications

Electron Transfer of &lt;i&gt;Shewanella oneidensis&lt;/i&gt; MR-1 at Clay-Modified ITO Electrode

Electron Transfer of &lt;i&gt;Shewanella oneidensis&lt;/i&gt; MR-1 at Clay-Modified ITO Electrode

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Electron Transfer of <i>Shewanella oneidensis</i> MR-1 at Clay-Modified ITO Electrode

Electron Transfer of <i>Shewanella oneidensis</i> MR-1 at Clay-Modified ITO Electrode