Microbial Fuel Cells: A Source of Bioenergy

Ан,; Parkash, Anand

doi:10.4172/1948-5948.1000293

Cited by 70 publications

(29 citation statements)

References 81 publications

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“…A Microbial Fuel Cell (MFC) is a device that converts chemical energy from bioconvertible organic substrate, directly into electrical energy through the metabolic activity of microorganisms [4]. Fuel cells are able to generate electricity from many different chemicals by oxidation of the chemicals at the anode and reduction at the cathode [5]. Tectona grandis Linn.…”

Section: Introductionmentioning

confidence: 99%

Electricity Production Potential of Decayed Tectona grandis Using Microbial Fuel Cell

Adegunloye

Ojo

2019

JAMB

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The potential of decayed Tectona grandis wood to generate current and voltage due to the inherent microorganism present in it was determined in this study. The decayed wood was collected from the Federal University of Technology Akure forest plantation. Microorganisms were isolated from the decayed Tectona grandis wood and the organisms were identified using both cultural and molecular methods. The microbial fuel experimental set up was carried out for 14 days. The microbial fuel cell was made up of two chambers which are the anodic i.e where bacteria oxidise the organic matter present in the wood and cathodic chamber, this contained the substrate (decayed wood) and water respectively. Current and voltage generated by the decayed wood was measured using a multimeter. Results revealed that the microorganisms isolated include Bacillus licheniformis, Micrococcus luteus, Bacillus sp, Acinetobacter iwoffii Bacillus cereus, Pseudomonas putida, Bacillus thuringiensis, Penicillum notantum, Rhizopus stolonifer, Aspergillus penicilloides, Rhizopus oryzae and Aspergillus flavus. It also showed that there was a continuous increase in the current generated which was within the range from (0.032 ± 0.00 to 0.441 ± 0.02) mA. The highest voltage was generated on day 12 with the value (0.369 ± 0.02) mV. It was shown that there was a progressive increase in the voltage generated from day 1 to day 12 with the range of values from 0.023 ± 0.01 to Adegunloye and Ojo; JAMB, 14(3): 1-8, 2019; Article no.JAMB.44635 2 0.369 ± 0.02) mV. Findings from this study affirmed that decayed Tectona grandis wood has the ability to generate current and voltage using microbial fuel cell due to the microorganisms present in them which initiate oxidation reaction. Original Research Article

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Section: Introductionmentioning

confidence: 99%

Electricity Production Potential of Decayed Tectona grandis Using Microbial Fuel Cell

Adegunloye

Ojo

2019

JAMB

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“…Microbes consume the nutrients in their surrounding environment and release a portion of the energy contained in the food in the form of electricity. MFC technology real-world applications of MFCs yet limited because of their low power density level of several thousand mW/m 2 [1].We hope that the result of this study can be used to create more efficient on a large as a new sustainable energy sources.…”

Section: Introductionmentioning

confidence: 83%

“…The two chambers of anodic chamber and cathodic chamber are separated by salt bridge. That allows transport protons while blowing oxygen and other components [1]. The anodic chamber degrade organic matter and produce electrons, protons and co2.…”

Section: Introductionmentioning

confidence: 99%

Electricity Generation from Domestic Waste Water by Microbial Fuel Cell

Guruvare¹

2018

IJRASET

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“…The electricity produced by MFCs can also be used for powering other technologies: biologically inspired robots, remote devices, small electronic devices (mobile phone, laptop, TV, coffee maker, etc. ), and even low‐energy‐demanding illumination devices. The requirements to make these applications of MFCs possible can be achieved by the “miniaturization and multiplication” scale‐up strategy, as demonstrated in previous research, for which a high amount of energy was generated from the treatment of urine effluents of synthetic wastewaters …”

Section: Perspectives Of the Applicability Of Microbial Fuel Cells: Wmentioning

confidence: 99%

A Critical View of Microbial Fuel Cells: What Is the Next Stage?

et al. 2018

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Am icrobialf uel cell (MFC)i saheterogeneousr eactor in which redox reactions take place at the interfacesb etween electron conductors (electrodes) and ion conductors (electrolyte). The oxidation occurs on the anode surface, whereas the reduction takes place on the cathode. Thee lectrolyte allows the transport of ions in each half-cell, from the anode to the cathode and vice versa. The electric current flows from the anode to the cathode through an external circuit, because of the potential differencep roduced betweenb oth electrodes (E). This cell voltage is relatedt ot he Gibbs' free energy in Equation (1), in which n is the number of exchanged electrons and F is the Faraday constant. DG ¼ ÀnFE ð1ÞIf G is lower than 0( DG < 0), the processp roceeds spontaneously andt he cell transforms the energy produced by as pontaneous chemical reactioni nto electrical energy.T he most im-portant cellsa re those developed for transforming energy as batteries( discontinuouse lectrochemical cells),r edox flow batteries andr echargeableb atteries (semicontinuouse lectrochemicalcells), andfuelcells (continuouselectrochemicalcells).Despite the great variety of applications of batteries nowadays, the development of fuel cells is more interesting from a researchp erspective because there are many weaknesses that have yet to be solved, in particular those related with the catalysts used to transform the fuel into electricity.Because of that, during the last few decades, the use of bacteria as catalysts has gained special attention in this field, and this has led to the concept of MFCs. The uniqueness of biocatalysts is that the catalytic efficiency dependso nt he microbial interactions in the community among them and with the electrodeso fafuel cell. These types of bacteria are called exoelectrogens. [1] The positive point is that these types of microorganisms (also called bioelectrogenic microorganisms) are not limited to the use of the same simplef uels as inorganic catalysts, as they can also face the oxidation of more complexf uels. [2] One of the cheapest fuels is wastewater.For this reason, microbial fuel cells are frequently related to the treatment of wastewater, [3] but this is not their only application.To understand how aM FC works, the scheme for at ypical MFC is showninFigure 1. The MFC shown consists of two electrodic chambers (anodic and cathodic) and as emipermeable membrane betweent he electrodes. Bacteria oxidize the substrate in the anodic chamber to generate protons and other metabolic products, generallyC O 2 .T he electrons are collected in the anode and travel to the cathode through an external electricalc ircuit, whereas protons pass from the anode to the cathode through the membrane. [2] Oncee lectrons and protons Microbial fuel cells (MFCs) have garnered interestf rom the scientific community since the beginning of this century and this has caused ac onsiderable increase in the scientific production of MFCs. However,t he ability of MFCs to generate power has not increased considerably within this timeframe....

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Microbial Fuel Cells: A Source of Bioenergy

Cited by 70 publications

References 81 publications

Electricity Production Potential of Decayed Tectona grandis Using Microbial Fuel Cell

Electricity Production Potential of Decayed Tectona grandis Using Microbial Fuel Cell

Electricity Generation from Domestic Waste Water by Microbial Fuel Cell

A Critical View of Microbial Fuel Cells: What Is the Next Stage?

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