Wastewater treatment by Microbial Fuel Cell (MFC) prior irrigation water reuse

Abourached, Carole; English, Marshall; Hong, Liu

doi:10.1016/j.jclepro.2016.07.048

Cited by 84 publications

(21 citation statements)

References 35 publications

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“…The transferred electrons flow to the cathode through an external circuit, generating electricity, and protons diffuse from the anode to the cathode via the PEM. The electrons and protons react with an electron acceptor (oxygen) at the cathode and form water . Compounds such as oxygen, ferricyanide, permanganate, H 2 O 2 , nitrate, trichloroethene and perchlorate have been used as electron acceptors owing to their high redox potential, fast reduction kinetics, low cost and easy availability .…”

Section: Principle Of Chromium Reduction In An Mfcmentioning

confidence: 99%

“…The electrons and protons react with an electron acceptor (oxygen) at the cathode and form water. 31 Compounds such as oxygen, ferricyanide, permanganate, H 2 O 2 , nitrate, trichloroethene and perchlorate have been used as electron acceptors owing to their high redox potential, fast reduction kinetics, low cost and easy availability. 23,32 Therefore heavy metal ions with high redox potential could be used as electron acceptors, as this would add to the environmental benefit of the MFC.…”

Section: Principle Of Chromium Reduction In An Mfcmentioning

confidence: 99%

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Critical review on microbial fuel cells for concomitant reduction of hexavalent chromium and bioelectricity generation

Aarthy

Rajesh

Thirunavoukkarasu

2019

J of Chemical Tech & Biotech

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Rapid urbanization and industrialization has led to the indiscriminate discharge of heavy metals into the environment. Hexavalent chromium (Cr(VI)), a lethal, carcinogenic and genotoxic heavy metal frequently found in industrial effluent, poses a serious threat to human health. On the other hand, there is a global energy crisis prevalent owing to the scarcity of resources and huge energy demand. An emerging innovative technology which utilizes the biocatalytic activity of microbes for electron production and offers a dual solution for simultaneous reduction of Cr(VI) and generation of bioelectricity is the microbial fuel cell (MFC). The success of the MFC depends on variables such as cell configuration, pH, electrode materials, effect of microbial communities and operational conditions. This review provides a critical insight on the developments in the field of MFCs with abiotic and biotic cathodes, integrated systems, plant‐ and soil‐based designs for treatment of Cr(VI)‐laden effluent and sustainable energy recovery. © 2019 Society of Chemical Industry

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Section: Principle Of Chromium Reduction In An Mfcmentioning

confidence: 99%

Section: Principle Of Chromium Reduction In An Mfcmentioning

confidence: 99%

Critical review on microbial fuel cells for concomitant reduction of hexavalent chromium and bioelectricity generation

Aarthy

Rajesh

Thirunavoukkarasu

2019

J of Chemical Tech & Biotech

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“…Microbial fuel cells (MFCs) are a type of bioreactor, which directly harvests electricity from chemical energy by exoelectrogens (i.e., microorganisms transferring electrons to an electrode). Recently, they have been widely used in power generation, wastewater treatment and biosensors [1][2][3][4][5][6][7]. In particular, the electron transfer occurs between: Redox-active outer membrane c-type cytochromes (OM c-Cyts) of the microbe, or redox-active mediators secreted by the cells/added outside, or microbially generated nanowires and the electrode surface [8].…”

Section: Introductionmentioning

confidence: 99%

Controlled Layer-By-Layer Deposition of Carbon Nanotubes on Electrodes for Microbial Fuel Cells

Niu

Yang

et al. 2019

Energies

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Carbon nanotubes (CNTs) and polyelectrolyte poly(allylamine hydrochloride) (PAH) composite modified indium tin oxide (ITO) electrodes, by a layer-by-layer (LBL) self-assembly technique, was evaluated as an anode for microbial fuel cells (MFCs). The bioelectrochemistry of Shewanella loihica PV-4 in an electrochemical cell and the electricity generation performance of MFCs with multilayer (CNTs/PAH)n-deposited ITO electrodes as an anode were investigated. Experimental results showed that the current density generated on the multilayer modified electrode increased initially and then decreased as the deposition of the number of layers (n = 12) increased. Chronoamperometric results showed that the highest peak current density of 34.85 ± 2.80 mA/m2 was generated on the multilayer (CNTs/PAH)9-deposited ITO electrode, of which the redox peak current of cyclic voltammetry was also significantly enhanced. Electrochemical impedance spectroscopy analyses showed a well-formed nanostructure porous film on the surface of the multilayer modified electrode. Compared with the plain ITO electrode, the multilayered (CNTs/PAH)9 anodic modification improved the power density of the dual-compartment MFC by 29%, due to the appropriate proportion of CNTs and PAH, as well as the porous nanostructure on the electrodes.

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“…More specifically, MFCs are a form of a bioreactor that generates electricity from chemical energy using electrodes. Wastewater treatment, power generation, and biosensors are the most widely used applications for MFCs [1] [2] [3] [4]. Shewanella oneidensis MR-1 is a commonly used bacterium in MFCs since it contains cytochromes in its outermost protective membrane, and these cytochromes transport electrons to nearby electron acceptors.…”

Section: Introductionmentioning

confidence: 99%

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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Wastewater treatment by Microbial Fuel Cell (MFC) prior irrigation water reuse

Cited by 84 publications

References 35 publications

Critical review on microbial fuel cells for concomitant reduction of hexavalent chromium and bioelectricity generation

Critical review on microbial fuel cells for concomitant reduction of hexavalent chromium and bioelectricity generation

Controlled Layer-By-Layer Deposition of Carbon Nanotubes on Electrodes for Microbial Fuel Cells

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

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Wastewater treatment by Microbial Fuel Cell (MFC) prior irrigation water reuse

Cited by 84 publications

References 35 publications

Critical review on microbial fuel cells for concomitant reduction of hexavalent chromium and bioelectricity generation

Critical review on microbial fuel cells for concomitant reduction of hexavalent chromium and bioelectricity generation

Controlled Layer-By-Layer Deposition of Carbon Nanotubes on Electrodes for Microbial Fuel Cells

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