Recent advances in the use of different substrates in microbial fuel cells toward wastewater treatment and simultaneous energy recovery

Pandey, Prashant Kumar; Shinde, Vikas; Deopurkar, R. L.; Kale, S. P.; Patil, Sunil A.; Pant, Deepak

doi:10.1016/j.apenergy.2016.01.056

Cited by 659 publications

(225 citation statements)

References 240 publications

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“…These simplified conditions cannot be an accurate reflection of the real life scenarios BES technologies will have to work in to be commercially viable. Differences in reactor configurations and reporting methods make direct comparison of the performance of wastewater and acetate feeds in different studies difficult, yet wastewater fed reactors typically produce lower power densities (PD) and Coulombic Efficiencies (CE) than those fed with simple substrates [5,6]. In identical reactors, synthetic complex wastewater produced half the power density of acetate [7].…”

Section: Introductionmentioning

confidence: 99%

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Temperature, inocula and substrate: Contrasting electroactive consortia, diversity and performance in microbial fuel cells

Heidrich

Dolfing

Wade

et al. 2018

Bioelectrochemistry

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The factors that affect microbial community assembly and its effects on the performance of bioelectrochemical systems are poorly understood. Sixteen microbial fuel cell (MFC) reactors were set up to test the importance of inoculum, temperature and substrate: Arctic soil versus wastewater as inoculum; warm (26.5°C) versus cold (7.5°C) temperature; and acetate versus wastewater as substrate. Substrate was the dominant factor in determining performance and diversity: unexpectedly the simple electrogenic substrate delivered a higher diversity than a complex wastewater. Furthermore, in acetate fed reactors, diversity did not correlate with performance, yet in wastewater fed ones it did, with greater diversity sustaining higher power densities and coulombic efficiencies. Temperature had only a minor effect on power density, (Q 10 : 2 and 1.2 for acetate and wastewater respectively): this is surprising given the well-known temperature sensitivity of anaerobic bioreactors. Reactors were able to operate at low temperature with real wastewater without the need for specialised inocula; it is speculated that MFC biofilms may have a self-heating effect. Importantly, the warm acetate fed reactors in this study did not act as direct model for cold wastewater fed systems. Application of this technology will encompass use of real wastewater at ambient temperatures.

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Section: Introductionmentioning

confidence: 99%

“…The study focuses on one specific type of BES, the Microbial Fuel Cell (MFC) [1,[4][5]. There were two explicit hypotheses: firstly, the use of an arctic soil as an inoculum would enhance the low temperature performance of an MFC relative to one started with a conventional inoculum.…”

Section: Introductionmentioning

confidence: 99%

Temperature, inocula and substrate: Contrasting electroactive consortia, diversity and performance in microbial fuel cells

Heidrich

Dolfing

Wade

et al. 2018

Bioelectrochemistry

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“…Among the several organic wastes investigated [1], urine is an interesting organic liquid waste due to: (i) a high daily production (2 L·day −1 ·person −1 ); (ii) high quantity of Chemical Oxygen Demand (COD); (iii) high concentration of nutrients (N and P); and (iv) high solution conductivity.…”

Section: Introductionmentioning

confidence: 99%

Carbon-Based Air-Breathing Cathodes for Microbial Fuel Cells

et al. 2016

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Abstract:A comparison between different carbon-based gas-diffusion air-breathing cathodes for microbial fuel cells (MFCs) is presented in this work. A micro-porous layer (MPL) based on carbon black (CB) and an activated carbon (AC) layer were used as catalysts and applied on different supporting materials, including carbon cloth (CC), carbon felt (CF), and stainless steel (SS) forming cathode electrodes for MFCs treating urine. Rotating ring disk electrode (RRDE) analyses were done on CB and AC to: (i) understand the kinetics of the carbonaceous catalysts; (ii) evaluate the hydrogen peroxide production; and (iii) estimate the electron transfer. CB and AC were then used to fabricate electrodes. Half-cell electrochemical analysis, as well as MFCs continuous power performance, have been monitored. Generally, the current generated was higher from the MFCs with AC electrodes compared to the MPL electrodes, showing an increase between 34% and 61% in power with the AC layer comparing to the MPL. When the MPL was used, the supporting material showed a slight effect in the power performance, being that the CF is more powerful than the CC and the SS. These differences also agree with the electrochemical analysis performed. However, the different supporting materials showed a bigger effect in the power density when the AC layer was used, being the SS the most efficient, with a power generation of 65.6 mW·m −2 , followed by the CC (54 mW·m −2 ) and the CF (44 mW·m −2 ).

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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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Recent advances in the use of different substrates in microbial fuel cells toward wastewater treatment and simultaneous energy recovery

Cited by 659 publications

References 240 publications

Temperature, inocula and substrate: Contrasting electroactive consortia, diversity and performance in microbial fuel cells

Temperature, inocula and substrate: Contrasting electroactive consortia, diversity and performance in microbial fuel cells

Carbon-Based Air-Breathing Cathodes for Microbial Fuel Cells

Fuel Production from Seawater and Fuel Cells Using Seawater

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