Evaluation of long-term performance of sediment microbial fuel cells and the role of natural resources

Ewing, Timothy; Ha, Phuc Thi; Beyenal, Haluk

doi:10.1016/j.apenergy.2016.08.177

Cited by 77 publications

(32 citation statements)

References 48 publications

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“…The more diversied microbes in SMFCs produce more power, due to the availability of redox mediators like c-cytochromes (omcZ omcB, omcS, omcT, omcE and omcZL). 37 Thioalkalivibrio sp. was also reported in this study and it is a suitable exoelectrogen and suitable for heavy metal detoxication due to its production of the cytochrome cbb 3 .…”

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confidence: 99%

Electrochemistry and microbiology of microbial fuel cells treating marine sediments polluted with heavy metals

et al. 2018

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The industrial contamination of marine sediments with chromium, copper and nickel in Penang, Malaysia was addressed with bio-remediation, coupled with power generation, using in situ sediment microbial cells (SMFCs) under various conditions. The efficiency of aerated sediment microbial fuel cells (A-SMFCs) and non-aerated sediment microbial fuel cells (NA-SMFCs) was studied. The A-SMFCs generated a voltage of 580.5 mV between 50 and 60 days, while NA-SMFCs produced a voltage of 510 mV between 60 and 80 days. The cell design point for A-SMFCs was 2 kU, while for NA-SMFCs it was 200 U.In both SMFCs, the maximum current values relating to forward scanning, reverse scanning and oxidation/reduction peaks were recorded on the 80 th day. The anode showed maximum additional capacitance on the 80 th day (A-SMFC: 2.7 F cm À2; and NA-SMFC: 2.2 F cm À2). The whole cell electrochemical impedance using the Nyquist model was 21 U for A-SMFCs and 15 U for NA-SMFCs.After glucose enrichment, the impedance of A-SMFCs was 24.3 U and 14.6 U for NA-SMFCs. After 60 days, the A-SMFCs reduced the maximum amount of Cr(VI) to Cr(III) ions (80.70%) and Cu(II) to Cu(I) ions (72.72%), and showed maximum intracellular uptake of Ni(II) ions (80.37%); the optimum remediation efficiency of NA-SMFCs was after 80 days toward Cr(VI) ions (67.36%), Cu(II) ions (59.36%) and Ni(II) ions (52.74%). Both SMFCs showed highest heavy metal reduction and power generation at a pH of 7.0. SEM images and 16S rRNA gene analysis showed a diverse bacterial community in both A-SMFCs and NASMFCs. The performance of A-SMFCs showed that they could be exercised as durable and efficient technology for power production and the detoxification of heavy metal sediments. The NA-SMFCs could also be employed where anaerobic fermentation is required.

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confidence: 99%

Electrochemistry and microbiology of microbial fuel cells treating marine sediments polluted with heavy metals

et al. 2018

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“…Evidence suggests that the next generation of sustainable energy could come from microorganisms, particularly from anaerobic digestion, and microbial fuel cells (MFCs) are gaining acceptance as an alternative “green” energy technology . Meanwhile, marine sediments microbial fuel cells (MSMFCs) have been used as a renewable power source to remote environmental monitoring , . The MSMFCs are a new type of microbial fuel cells where the microbes convert organic matter presented in the sediment into electrical energy.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, the available organic substrate in sediments will be one of the limited factors to support high level of power production . In the natural systems, natural organic compounds in the sediment serve as a source of renewable fuel and are renovated by sedimentation processes that provide continuous flux of organic carbon to the anode . The concentration, species and diffusion rate of active organic matter affect the type and quantity of microorganisms directly.…”

Section: Introductionmentioning

confidence: 99%

“…For example, L‐methionine (L‐Met) is a latent precursor of methylated sulfur compounds as electrochemically active compound in anaerobic sediments, and microbial communities can metabolize volatile methylated sulfur compounds to produce methyl mercaptan. Therefore, in this study, amino acids are added into the sediments to promote the growth and attachment of elecroactive bacteria on the electrode surface and to increase the output power density of the battery . Furthermore, different ocean and coastal sites have different organic contents especially amino acids, so deployment of microbial fuel cells in the marine environment has always been difficult , .…”

Section: Introductionmentioning

confidence: 99%

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Effect of Amino Acid Addition in Marine Sediment on Electrochemical Performance in Microbial Fuel Cells

Guo

Zai

et al. 2018

Fuel Cells

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As exogenous substances, L‐methionine, L‐threonine and L‐lysine were added into the marine sediment to construct marine sediments microbial fuel cells (MSMFCs) and the effects on the anodic electrochemical activity were following investigated. The results show that the addition of the amino acid increases anodic electrochemical activity, and the anode in L‐methionine modified sediment presents better performance than others. The specific capacitance of anode in L‐methionine modified sediment (192.00 F cm−2) is 4.0 times bigger than that of anode in unmodified sediment, generating a maximum current density of 2.560 × 10−4 A cm−2. In their Tafel curves, the anodic exchange current density in the L‐methionine modified sediment (2.14 × 10−6 A cm−2) is 93.04 times higher than that of unmodified anode, which suggests that the electrochemical activity of redox, anti‐polarization ability and electron transfer kinetic activity are improved significantly. The MSMFC with L‐methionine modified sediment generates the higher power densities than the blank (143.2 mW m−2 versus 59.2 mW m−2), and its current also increases by 2.8 times. This demonstrates that L‐methionine provides a practical advantage on the anodic electrochemical and battery performance. Therefore, amino acids are good tools to evaluate its power generation of the MSMFCs.

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“…[87][88][89][90][91][92] The anode electrode was embedded within anoxicmarine sediments and connected through electronic circuits to as imilar electrode in the overlying aerobic seawater (the cathode) to make an SMFC. [93] The SMFC with an unmodified graphite electrode afforded an electric powerg eneration of 0.01 Wm…”

Section: Microbial Fuelc Ells Using Seawatermentioning

confidence: 99%

Fuel Production from Seawater and Fuel Cells Using Seawater

2017

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Seawater is the most abundant resource on our planet and fuel production from seawater has the notable advantage that it would not compete with growing demands for pure water. This Review focuses on the production of fuels from seawater and their direct use in fuel cells. Electrolysis of seawater under appropriate conditions affords hydrogen and dioxygen with 100 % faradaic efficiency without oxidation of chloride. Photoelectrocatalytic production of hydrogen from seawater provides a promising way to produce hydrogen with low cost and high efficiency. Microbial solar cells (MSCs) that use biofilms produced in seawater can generate electricity from sunlight without additional fuel because the products of photosynthesis can be utilized as electrode reactants, whereas the electrode products can be utilized as photosynthetic reactants. Another important source for hydrogen is hydrogen sulfide, which is abundantly found in Black Sea deep water. Hydrogen produced by electrolysis of Black Sea deep water can also be used in hydrogen fuel cells. Production of a fuel and its direct use in a fuel cell has been made possible for the first time by a combination of photocatalytic production of hydrogen peroxide from seawater and dioxygen in the air and its direct use in one‐compartment hydrogen peroxide fuel cells to obtain electric power.

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Evaluation of long-term performance of sediment microbial fuel cells and the role of natural resources

Cited by 77 publications

References 48 publications

Electrochemistry and microbiology of microbial fuel cells treating marine sediments polluted with heavy metals

Electrochemistry and microbiology of microbial fuel cells treating marine sediments polluted with heavy metals

Effect of Amino Acid Addition in Marine Sediment on Electrochemical Performance in Microbial Fuel Cells

Fuel Production from Seawater and Fuel Cells Using Seawater

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