A review on the effect of proton exchange membranes in microbial fuel cells

Rahimnejad, Mostafa; Bakeri, Gholamreza; Najafpour, Ghasem; Ghasemi, Mostafa; Oh, Sang‐Eun

doi:10.18331/brj2015.1.1.4

Cited by 104 publications

(50 citation statements)

References 97 publications

(95 reference statements)

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“…Nowadays, the majority of energy consumed in the drying industry is met by fossil-based fuels. Unfortunately, the widespread utilization of such fuels has led to the greenhouse gas emissions and has consequently brought about environmental concerns such as global warming, climate changes, acid rain, and stratospheric ozone exhaustion [3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Improving exergetic performance parameters of a rotating-tray air dryer via a simple heat exchanger

Ghasemkhani

Keyhani

Aghbashlo

et al. 2016

Applied Thermal Engineering

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Highlights: Exergy analysis of a rotating-tray air dryer fitted with a simple air-to-air heat exchanger  Effect of drying air temperature and velocity on exergetic efficiency of the dryer  Promising improvement of exergetic performance parameters of the dryer using the heat exchanger  Potential application of the proposed strategy for recovering waste energy in drying technology AbstractIn this study, exergy analysis was applied for a rotating-tray dryer equipped with a cross-flow plate heat exchanger during drying of apple slices. Three drying air temperatures and tray rotation speeds in the range of 50-80 °C and 0-12 rpm, respectively, were employed. Two drying air velocities in the range of 1-2 m/s were adjusted for each drying temperature and rotation speed with and without application of the heat exchanger. The experiments were conducted to assess the effects of the experimental variables on the exergetic performance parameters of the dryer. Also, the effect of drying conditions on the quality of dried apple slices was assessed by determining rehydration ratio, apparent density, shrinkage, and surface color. In general, the exergetic performance parameters of the dryer depended profoundly on the drying air temperature and velocity. Interestingly, the exergetic efficiency of drying process was significantly improved from a minimum value of 23.0% to a maximum value of 96.1% by using the heat exchanger. Furthermore, the incorporation of heat exchanger did not negatively affect the quality of dried product. Therefore, the strategy presented herein could be a promising approach for waste energy recovery in drying without any unfavorable change in the quality of dried product.

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Section: Introductionmentioning

confidence: 99%

Improving exergetic performance parameters of a rotating-tray air dryer via a simple heat exchanger

Ghasemkhani

Keyhani

Aghbashlo

et al. 2016

Applied Thermal Engineering

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“…For thermodynamic reasons, external energy in the form of electricity is supplied to reduce protons to hydrogen in MECs. Proton exchange membranes (PEMs) used as separators are one of the most important components in MET devices that influence their performances (Rahimnejad et al, 2014a;Xu et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

“…In recent years, METs as new emerging renewable energy technologies, have been reviewed extensively Liew et al, 2014;Ge et al, 2014;Jafary et al, 2015;Dhar and Lee, 2013) including reviews on separators used in METs Kraytsberg and Ein-Eli, 2014;Leong et al, 2013;Rahimnejad et al, 2014a;Varcoe et al, 2014;Wang and Ren, 2013) but none of the reviews have considered inorganic separators as main topics of review such as ceramic and earthenware.…”

Section: Introductionmentioning

confidence: 99%

Separators used in microbial electrochemical technologies: Current status and future prospects

Daud¹,

Kim

Ghasemi³

et al. 2015

Bioresource Technology

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139

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“…shows a schematic diagram of a typical MFC for producing electricity. It consists of anodic and cathodic chambers partitioned by a PEM (Rahimnejad et al, 2014). Microbes in the anodic chamber of an MFC oxidize added substrates and generate electrons and protons in the process.…”

Section: Introductionmentioning

confidence: 99%

“…For those bacterial species that are not capable of releasing electrons to the anode directly, a redox mediator is needed to transfer the electrons directly to the anode (Du et al, 2007). In the study, the final anodic reaction is that the anode gains the electrons from metabolism reaction in the microbes (Liu et al, 2010 Rahimnejad et al (2014) reported that in the MFC researchers utilized Nafion as a membrane, the Nafion membrane equilibrates with the cation species present in the anolyte and catholyte. This equilibration quickly changes the membrane from its proton form to a form in which mainly other cation species occupy the negatively charged sulfonate groups.…”

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confidence: 99%

Microbial Fuel Cell Based Polystyrene Sulfonated Membrane as Proton Exchange Membrane

Muljani

Wulanawati

2016

ALCHEMY J.Pen.Kim

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Microbial fuel cell (MFC) represents a major bioelectrochemical system that converts biomass spontaneously into electricity through the activity of microorganisms. The MFC consists of anode and cathode compartments. Microorganisms in MFC liberate electrons while the electron donor are consumed. The produced electron is transmitted to the anode surface but the generated protons must pass through the proton exchange membrane (PEM) in order to reach the cathode compartment. PEM, as a key factor, affects electricity generation in MFCs.The study attempted to investigate if the sulfonated polystyrene (SPS) membrane can be used as a PEM in application on MFC. SPS membrane has been characterized using fourier transform infrared spectrophotometer (FTIR), scanning electron microscope (SEM) and conductivity. The result of the conductivity (σ) revealed that the membrane has a promising application for MFC.

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A review on the effect of proton exchange membranes in microbial fuel cells

Cited by 104 publications

References 97 publications

Improving exergetic performance parameters of a rotating-tray air dryer via a simple heat exchanger

Improving exergetic performance parameters of a rotating-tray air dryer via a simple heat exchanger

Separators used in microbial electrochemical technologies: Current status and future prospects

Microbial Fuel Cell Based Polystyrene Sulfonated Membrane as Proton Exchange Membrane

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