Surface Modification of Microbial Fuel Cells Anodes: Approaches to Practical Design

Li, Baitao; Zhou, Jun Shuang; Zhou, Xiuxiu; Wang, Xiujun; Li, Baikun; Santoro, Carlo; Grattieri, Matteo; Babanova, Sofia; Artyushkova, Kateryna; Atanassov, Plamen; Schuler, Andrew J.

doi:10.1016/j.electacta.2014.04.136

Cited by 96 publications

(67 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The increase in oxygen containing functional groups should most likely cause an increase in the hydrophilicity of the electrodes and thus enhance the biofilm formation and development. It was also suggested that the decrease in C=C bonds leads to a decreased resistance as was observed before, 9 but no such observation can be made here. The resistance of the modified electrodes in this study, determined via electrochemical impedance spectroscopy, increased with the increased time of UV/O 3 exposure or with the decreased amount of C=C bonds.…”

Section: Resultsmentioning

confidence: 50%

“…These are, but not limited to: i) high surface roughness; ii) biocompatibility; and iii) surface chemistry that enhances bacterial attachment and electron transfer. [9][10] …”

mentioning

confidence: 99%

“…In addition, it has been established that increased biofilm formation and bacterial coverage leads to increased MFCs current generation. 5,[9][10][11] At the same time, the electron transfer rate from bacteria towards the electrode surface was proven to be one of the most important factors determining the performance of those systems. [12][13][14] Both of these factors strongly depend on the electrode material properties, such as real surface area, conductivity, hydrophilicity and surface chemistry.…”

mentioning

confidence: 99%

“…This modification approach increased the ratio of saturated/unsaturated carbon on the surface and consequently decreased the electrode resistance, which also had a positive effect on bacteria attachment and biofilm formation. 9 Another example of electrochemical oxidation of the electrode material resulted in a significant increase in current produced from MFC graphite anodes over MFCs containing untreated anodes. 21 These methods, however effective, are not optimal for large-scale applications due to cost, safety chemical handling and technical requirements.…”

mentioning

confidence: 99%

See 3 more Smart Citations

Surface Modification for Enhanced Biofilm Formation and Electron Transport in Shewanella Anodes

Cornejo

Lopez

Babanova

et al. 2015

J. Electrochem. Soc.

Self Cite

View full text Add to dashboard Cite

In this study a simple, fast and effective surface modification method for enhanced biofilm formation, increased electron transfer rate and higher current density generation from microbial fuel cell (MFC) has been demonstrated. This method consists of partial oxidation of carbon felt material by UV/O 3 treatment. Results from the electrochemical studies performed suggest that Shewanella oneidensis MR-1 biofilm formation is favored on UV/O 3 treated carbon felt electrodes when subjected to an applied potential of The possibility to directly convert the energy of chemical bonds into electricity has been recognized as an alternative and effective approach for energy transformation. This quest has been embodied in electrochemical devices including batteries and fuel cells. Commonly used batteries and fuel cells employ inorganic catalysts and harmful, costly electrolytes. In order to overcome the limited reserve of noble metals usually used and avoid the use of harmful compounds, a new avenue of electrochemical systems has been developed. These new systems rely on bio-catalytic ability of enzymes and microorganisms in fuel cells.1 The latter has gained attention of researchers, government agencies and industry driven by, among other things, the potential for combining efficient wastewater purification with concomitant electricity production. This achievement will provide an opportunity for the development of portable, self-sustaining wastewater treatment units.The electrode material and its properties are a key component, determining the performance and cost of Microbial Fuel Cells (MFCs).2 Therefore, electrode design is one of the greatest challenges in making MFCs a cost-effective and scalable technology.3-8 Among the general requirements, such as good conductivity, chemical stability, mechanical strength, high surface area and low cost, anode materials should posses several key characteristics that will determine the rate of bacteria-electrode interactions. These are, but not limited to: i) high surface roughness; ii) biocompatibility; and iii) surface chemistry that enhances bacterial attachment and electron transfer. [9][10]

show abstract

Section: Resultsmentioning

confidence: 50%

“…These are, but not limited to: i) high surface roughness; ii) biocompatibility; and iii) surface chemistry that enhances bacterial attachment and electron transfer. [9][10] …”

mentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Surface Modification for Enhanced Biofilm Formation and Electron Transport in Shewanella Anodes

Cornejo

Lopez

Babanova

et al. 2015

J. Electrochem. Soc.

Self Cite

View full text Add to dashboard Cite

show abstract

“…The effect of the anode surface topography (roughness, porosity, etc.) has been checked [20] and surface chemistry has been widely investigated with different kinds of surface modification, including electrochemical treatments [21,22], self-assembled monolayers [23], chemical modification [24,25], surfactant treatments [24,26], and functionalized coatings [25], which pointed out the importance of the hydrophilic/hydrophobic property of the surface [27]. From a biological standpoint, reducing the start-up time of MFCs has been attempted by changing the nature of the inoculum [28] and with various treatments of the inlet, e.g.…”

Section: Introductionmentioning

confidence: 99%

Increasing the temperature is a relevant strategy to form microbial anodes intended to work at room temperature

Oliot¹,

Erable²,

Solan³

et al. 2017

Electrochimica Acta

View full text Add to dashboard Cite

OATAO is an open access repository that collects the work of Toulouse researchers and makes it freely available over the web where possible. Reducing the time required for the formation of microbial anodes from environmental inocula is a great challenge. The possibility of reaching this objective by increasing the temperature during the bioanode preparation was investigated here. Microbial anodes were formed at 25 C and 40 C under controlled potential with successive acetate additions. At 25 C, around 40 days were required to perform three acetate batches, which led to current density of 9.4 ± 2 A.m À2 , while at 40 C, 20 days were sufficient to complete three similar batches, leading to 22.9 ± 4.2 A.m À2 . The bioanodes formed at 40 C revealed three redox systems and those formed at 25 C only one. The temperature also impacted the biofilm structure, which was less compact at 40 C. When the bioanodes formed at 40 C were switched to 25 C, they produced current densities similar to those of bioanodes formed at 25 C; they recovered the single redox system that was developed by the bioanodes formed at 25 C and the difference in biofilm structures was mitigated. It is consequently fully appropriate to accelerate the formation of microbial anodes by increasing the temperatures to 40 C even if they are finally intended to operate at room temperature.

show abstract

Progress in Development of Electrode Materials in Microbial Fuel Cells

Pareek

Mohan

2019

Bioelectrochemical Interface Engineering

View full text Add to dashboard Cite

Surface Modification of Microbial Fuel Cells Anodes: Approaches to Practical Design

Cited by 96 publications

References 39 publications

Surface Modification for Enhanced Biofilm Formation and Electron Transport in Shewanella Anodes

Surface Modification for Enhanced Biofilm Formation and Electron Transport in Shewanella Anodes

Increasing the temperature is a relevant strategy to form microbial anodes intended to work at room temperature

Progress in Development of Electrode Materials in Microbial Fuel Cells

Contact Info

Product

Resources

About