Ion exchange membranes as separators in microbial fuel cells for bioenergy conversion: A comprehensive review

Leong, Jun Xing; Daud, Wan Ramli Wan; Ghasemi, Mostafa; Liew, Kien Ben; Ismail, Manal

doi:10.1016/j.rser.2013.08.052

Cited by 278 publications

(135 citation statements)

References 114 publications

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“…The rapid drop, i.e., the four times higher drop of the DOC cathode potential with higher current density, is indicative of the fact that oxygen reduction occurs at a slow rate at the surface of carbon electrodes, including the Pt/C cathode material used here limiting the current production [9,17]. In contrast, the linear rise of the anode electrode potential for the AiC-MFC, +0.22 Ωm 2 compared to +0.08 Ωm 2 and +0.07 Ωm 2 for the DOC-MFC and FeC-MFC systems (Figure 3), is possibly caused by diffusion of oxygen via the membrane into the anode compartment [18], which may hinder the MFC in reaching the full capacity for electricity generation.…”

Section: Obtainable Current For the Different Cathode Typesmentioning

confidence: 94%

Cathode Assessment for Maximizing Current Generation in Microbial Fuel Cells Utilizing Bioethanol Effluent as Substrate

2016

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Implementation of microbial fuel cells (MFCs) for electricity production requires effective current generation from waste products via robust cathode reduction. Three cathode types using dissolved oxygen cathodes (DOCs), ferricyanide cathodes (FeCs) and air cathodes (AiCs) were therefore assessed using bioethanol effluent, containing 20.5 g/L xylose, 1.8 g/L arabinose and 2.5 g/L propionic acid. In each set-up the anode and cathode had an electrode surface area of 88 cm 2 , which was used for calculation of the current density. Electricity generation was evaluated by quantifying current responses to substrate loading rates and external resistance. At the lowest external resistance of 27 Ω and highest substrate loading rate of 2 g chemical oxygen demand (COD) per L¨day, FeC-MFC generated highest average current density (1630 mA/m 2 ) followed by AiC-MFC (802 mA/m 2 ) and DOC-MFC (184 mA/m 2 ). Electrochemical impedance spectroscopy (EIS) was used to determine the impedance of the cathodes. It was thereby confirmed that the FeC-MFC produced the highest current density with the lowest internal resistance for the cathode. However, in a setup using bioethanol effluent, the AiC-MFC was concluded to be the most sustainable option since it does not require ferricyanide. The data offer a new add-on option to the straw biorefinery by using bioethanol effluent for microbial electricity production.

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Section: Obtainable Current For the Different Cathode Typesmentioning

confidence: 94%

Cathode Assessment for Maximizing Current Generation in Microbial Fuel Cells Utilizing Bioethanol Effluent as Substrate

2016

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“…Cation exchange membranes are permeable for protons generated in the anodic chamber [31]. To avoid acidification of the catholyte by these protons, the catholyte was gassed with air in order to supply oxygen for the cathode chamber [32].…”

Section: Stirredmentioning

confidence: 99%

Anodic respiration of Pseudomonas putida KT2440 in a stirred-tank bioreactor

Hintermayer

Krömer

et al. 2016

Biochemical Engineering Journal

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“…These phenomena lead to a membrane pH spitting which puts an electrochemical/thermodynamic limitation on MFC performance [8] . In anolytes of MFC acidic conditions inhibits the oxidation activity of bacteria and reduces proton production [9][10][11][12] .…”

Section: Introductionmentioning

confidence: 99%

The Influence of pH Spitting on the Internal Resistance in Microbial Fuel Cells

Zhang¹,

Hui²,

Han³

2015

Proceedings of the 2015 International Conference on Mechatronics, Electronic, Industrial and Control Engineering

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Abstract-Membrane separator in microbial fuel cell (MFCs) is one of the main factors that could significantly affect the performance of MFC. Proton exchange membranes (PEMs) are typically used in two-chamber microbial fuel cells to separate the anode and cathode chambers while to allow the transfer of protons from anode to the cathode. However, protons will accumulate in the anode chamber, and therefore and the pH balance will be broken if the MFC works for a long time. In this study, effects of two types of separator membranes (Proton Exchange Membrane; 0.45μm Synthetic Fabric Membrane) on the pH spitting and MFC performance were investigated. Membrane internal resistance, membrane biofouling and oxygen diffusion were also analyzed. The fouling layer attached on membranes consisted of microorganisms was demonstrated from imaging analysis coupled with SEM. We found that pH splitting might influence MFC internal resistance more than biofouling. This was attributed to the proton transfer process, which was influenced by cathode pH value.

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Ion exchange membranes as separators in microbial fuel cells for bioenergy conversion: A comprehensive review

Cited by 278 publications

References 114 publications

Cathode Assessment for Maximizing Current Generation in Microbial Fuel Cells Utilizing Bioethanol Effluent as Substrate

Cathode Assessment for Maximizing Current Generation in Microbial Fuel Cells Utilizing Bioethanol Effluent as Substrate

Anodic respiration of Pseudomonas putida KT2440 in a stirred-tank bioreactor

The Influence of pH Spitting on the Internal Resistance in Microbial Fuel Cells

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