Peer Reviewed: Extracting Hydrogen and Electricity from Renewable Resources

Logan, Bruce E.

doi:10.1021/es040468s

Cited by 435 publications

(171 citation statements)

References 20 publications

(32 reference statements)

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“…Also, such factors as anodic liquid conductivity, carbon source strength and composition, and MEC design might influence the choice of the anode size. In particular, MEC operation on wastewater might require the steps of carbon source hydrolysis and fermentation (Logan, 2004). To provide a support for hydrolytic and fermentative microorganisms the anode size could be increased or an additional (non-conductive) support for microbial growth could be provided.…”

Section: The Effect Of Anode Thickness On Hydrogen Productionmentioning

confidence: 99%

Optimizing the electrode size and arrangement in a microbial electrolysis cell

Gil-Carrera

Mehta

Escapa

et al. 2011

Bioresource Technology

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This study investigates the influence of anode and cathode size and arrangement on hydrogen production in a membrane-less flat-plate microbial electrolysis cell (MEC). Protein measurements were used to evaluate microbial density in the carbon felt anode. The protein concentration was observed to significantly decrease with the increase in distance from the anode-cathode interface. Cathode placement on both sides of the carbon felt anode was found to increase the current, but also led to increased losses of hydrogen to hydrogenotrophic activity leading to methane production. Overall, the best performance was obtained in the flat-plate MEC with a two-layer 10 mm thick carbon felt anode and a single gas-diffusion cathode sandwiched between the anode and the hydrogen collection compartments.Crown

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Section: The Effect Of Anode Thickness On Hydrogen Productionmentioning

confidence: 99%

Optimizing the electrode size and arrangement in a microbial electrolysis cell

Gil-Carrera

Mehta

Escapa

et al. 2011

Bioresource Technology

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“…Maximum power generation and current among these catholytes were 324.8 µW and 1194.6 µA, respectively. Mediators are ordinarily employed to enhance the performance of MFC (Logan, 2004). Electron transfer in anode compartment was promoted by two types of mediators in the present MFC.…”

Section: Resultsmentioning

confidence: 99%

“…Electrons are able to be transferred to the anode by mediators, shuttles (Rabaey et al, 2004;Rabaey et al, 2005a) and nanowires (Beveridge, 2004;Reguera et al, 2005). Some Chemical mediators, such as neutral red , anthraquinone-2-6, disulfonate (AQDS), thionin, potassium ferricyanide (Bond et al, 2002) and methyl viologen (Logan, 2004) were used to increase the efficiency of power generation in MFCs.…”

Section: Introductionmentioning

confidence: 99%

Whey as a substrate for generation of bioelectricity in microbial fuel cell using E.coli

Nasirahmadi

Safekordi

2011

Int. J. Environ. Sci. Technol.

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While oil prices raise and the supply remains unsteady, it may be beneficial to use the high content of energy available in food processing wastes, such as cheese whey waste, by converting it to bioenergy. As well, there have been many new waste biotreatment technologies developed recently, which may well be used directly to food processing wastes. Microbial fuel cell represents a new technology for simultaneous use of waste materials and bioelectricity generation. In this study, bioelectricity generation with whey degradation was investigated in a twochamber microbial fuel cell with mediators. E.coli was able to use the carbohydrate found in whey to generate bioelectricity. The open-circuit voltage in absence of mediator was 751.5mV at room temperature. The voltage was stable for more than 24 h. Riboflavin and humic acid were used as conceivable mediators. The results showed that humic acid was a few times more effective than Riboflavin. Additionally, four chemicals employed as catholyte. Based on polarization curve, FeCl 3 (É É É) was the best. Maximum power generation and current were 324.8 ì W and 1194.6ìA, respectively.

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“…Although MFCs are not currently an economical method for power production, the last few years have proved to be a progressive arch for MFCs in power generation. Power output of 10-50 and 250-500 mW/m 2 have been generated using substrates such as domestic wastewater and glucose, respectively (Logan 2004). Rabaey et al (2003) generated a power density of 3.6 W/m 2 using a simple substrate like glucose and a mixed consortium of microbial community (Rabaey et al 2003).…”

Section: Production Of Bioelectricitymentioning

confidence: 99%

“…Most of the MFC models do provide efficient energy production but pose a question mark on the efficiency when scaled up. The electricity production by MFC technology as of currently when compared with methanogenic anaerobic digestion falls short of economical (Logan 2004). The operating temperature also acts as a limitation for MFC technology as microbial reactions cease at temperatures below 20°C (Shantaram et al 2005).…”

Section: Advantages and Disadvantagesmentioning

confidence: 99%

Microbial fuel cells in bioelectricity production

Tharali

Sain

Osborne

2016

Frontiers in Life Science

108

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Bioelectricity production involves generation of electricity by anaerobic digestion of organic substrates by microbes. A microbial fuel cell (MFC) is a device that converts chemical energy released as a result of oxidation of complex organic carbon sources which are utilized as substrates by microorganisms to produce electrical energy thereby proving to be an efficient means of sustainable energy production. The electrons released due to the microbial metabolism are captured to maintain a constant power density, without an effective carbon emission in the ecosystem. The various parameters involved in MFC technology toward power generation include maximum power density, coulombic efficiencies and sometimes chemical oxygen demand removal rate which evaluates the effectiveness of the device. Application of microbes toward bioremediation at the same time resulting in generation of electricity makes MFC technology a highly advantageous proposition which can be applied in various sectors of industrial, municipal and agricultural Waste Management. Although the efficiency of MFCs in power generation initially was low, recent modifications in the design, components and working have enhanced the power output to a significant level thereby enabling application of MFCs in various fields including wastewater treatment, biosensors and bioremediation. The following review provides an outline about the components involved, working, modifications and applications of MFC technology for various research and industrial objectives. ARTICLE HISTORY

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Peer Reviewed: Extracting Hydrogen and Electricity from Renewable Resources

Cited by 435 publications

References 20 publications

Optimizing the electrode size and arrangement in a microbial electrolysis cell

Optimizing the electrode size and arrangement in a microbial electrolysis cell

Whey as a substrate for generation of bioelectricity in microbial fuel cell using E.coli

Microbial fuel cells in bioelectricity production

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