Application of biocathodes and enrichment strategies as promising alternative for enhanced bioelectricity generation in microbial fuel cells

Poggi‐Varaldo, Héctor M.; Martínez, Alexandre; Vázquez-Larios, A.L.; Rindernknecht-Seijas, N.F.; Vazquez, G. Vazquez; Solorza‐Feria, O.

doi:10.1016/j.nbt.2009.06.561

Cited by 3 publications

(6 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…19 Collectively, these technologies are referred to as Bioelectrochemical Systems (BESs) and, more particularly, Microbial Electrochemical Systems (MXCs) or Microbial Electrochemical Technologies. 20 They have received remarkable global attention, 21 especially because they can use complex solid waste or wastewaters as feedstock, [22][23][24][25][26][27][28][29][30][31][32][33] reduce energy-consumption compared to traditional processing, 34,35 and products can be generated with lower greenhouse emissions. 21 MXC technologies promise, as well, a big step towards energypositive integrated biorefineries.…”

Section: Introductionmentioning

confidence: 99%

The accurate use of impedance analysis for the study of microbial electrochemical systems

et al. 2012

View full text Add to dashboard Cite

The present critical review aims to portray the principles and theoretical foundations that have been used for the application of electrochemical impedance spectroscopy (EIS) to study electron-transfer mechanisms, mass transfer phenomena and distribution of the heterogeneous properties of microbial electrochemical systems (MXCs). Over the past eight years, the application of this method has allowed major breakthroughs, especially in the field of microbial fuel cells (MFCs); however, it is still most widely extended only to the calculation of internal resistances. The use and interpretation of EIS should greatly improve since the intrinsic knowledge of this field, and efforts and current trends in this field have already allowed its understanding based on rather meaningful physical properties and not only on fitting electrical analogues. From this perspective, the use, analysis and interpretation of EIS applied to the study of MXCs are critically examined. Together with the revision of more than 150 articles directly devoted to this topic, two examples of the correct and improved analysis of EIS data are extensively presented. The first one focuses on the use of graphical methods for improving EIS analysis and the other one concentrates on the elucidation of the constant phase element (CPE) parameters. CPEs have been introduced in equivalent circuit models, sometimes without solid justification or analysis; the effective capacitance has been obtained from CPE parameters, following an unsuitable theory for the case of microbial-electrochemical interfaces. The use of CPE is reviewed in terms of meaningful physical parameters, such as biofilm thickness. The use of a finite-diffusion element is reviewed throughout estimation of accurate values for obtaining the dimensionless numbers, Schmidt and Sherwood, in the context of a dioxygen-reducing-biocathode, under different flow-rate conditions. The use and analysis of EIS in this context are still emerging, but because of the promising potential of MXCs in renewable power generation, wastewater treatment and energy-positive biorefining, among other applications, it becomes necessary to boost our global capacities for the application of EIS-and especially its interpretation-so that we achieve a better understanding and optimization of these systems.

show abstract

Section: Introductionmentioning

confidence: 99%

The accurate use of impedance analysis for the study of microbial electrochemical systems

et al. 2012

View full text Add to dashboard Cite

show abstract

“…To the best of our knowledge studies on leachate treatment in MFCs seeded with enriched inocula are very scarce in the open literature [49]. There are, however, a couple of articles of our own group that deals with leachate treatment in MFC using more conventional inocula (aerobic, methanogenic, sulphate-reducing consortia) as well as research carried out by others whose results in general show low powers and moderate to adequate pollutant concentration removal (as chemical oxygen demand (COD)) (see review in appendix A, Supporting Information (SI)) [5,6,[50][51][52][53].…”

Section: Abbreviationsmentioning

confidence: 99%

“…For instance, in biohydrogen production from dark fermentation of organic wastes, the complete conversion of wastes to energy is not possible [3]. Dark fermentation typically leads to partial degradation of the organic matter; a large amount of organic metabolites still remain in the spent liquors or leachates of dark fermentation that can be used as "fuels" in microbial fuel cells (MFCs) [4][5][6].…”

mentioning

confidence: 99%

“…In this context, MFCs have emerged as a promising process for sustainable production of low intensity electrical energy and treatment of wastes such as the leachates and liquors of biohydrogen dark fermentation, thus constituting key contributors to sustainable development of our societies in the near future [7]. A MFC is an bioelectrochemical device that is capable of converting organic matter into electricity [5,6,[8][9][10]. However, there are still some bottlenecks that can affect the electric energy production in a *To whom correspondence should be addressed: Email: r4cepe@yahoo.com Phone: 52 MFC, such as the nature of the biocatalysts, the type and materials of electrodes, electrode catalysts, cell configuration, and architecture, among others [11][12][13][14].…”

mentioning

confidence: 99%

“…A good anodic material should have the following properties: high electrical conductivity, strong biocompatibility, chemical stability and anti-corrosion, large surface area and appropriate mechanical strength and toughness [14,15]. Thus, in order to reduce the R int of the cell some materials and designs have been evaluated, such as new anodic materials, replacement of the salt bridge by membranes, choosing membranes with high protonic conductivity or building membrane-less MFC, increasing solution conductivity and reducing the pH, reducing electrode spacing, among others [5,6,[25][26][27][28][29][30][31]. Regarding the effect of anodic materials, there has been much research on the use of graphite anodes in MFC [12][13][14][15][30][31][32][33][34][35][36][37][38][39][40].…”

mentioning

confidence: 99%

See 2 more Smart Citations

Improvement of Microbial Fuel Cell Performance by Selection of Anodic Materials and Enrichment of Inoculum

Hernández-Flores

Poggi-Varaldo

Solorza‐Feria

et al. 2015

J. New Mat. Electrochem. Sys.

Self Cite

View full text Add to dashboard Cite

This work aimed at evaluating the effect of four anodic materials and the use of enriched inocula on the microbial fuel cell (MFC) performance. The anodic materials were granular activated carbon (GAC), graphite rod (GR), triangles of graphite (GT) and graphite flakes (GF). When loaded with a sulfate-reducing inoculum (SR-In) the internal resistance (Rint) obtained were 273, 410 and 795 Ω for GF, GT, GR, respectively and higher than 10 000 Ω for GAC, whereas the maximum volumetric power (PV,max) were 1326, 2108 and 3052 mW m-3 for GR, GT and GF, respectively. We observed a decrease of Rint and an increase of PV,max with the increase of the log of A´s of the graphite anodic materials that was consistent with a mathematical model previously reported by our Group. The use of the Fe (III)-reducing inoculum significantly enhanced the MFC performance; PV,max was up to 5000 mW m-3, 40% higher than the power obtained with SR-In whereas the Rint was 140 ohms. Highest PVs of our MFC were close to values of electricity power derived from the anaerobic digestion of municipal wastewaters. In this regard, results of this work point out to a promising approach to further tapping bioelectricity from organic wastes that previously have yielded biohydrogen.

show abstract

Anodic Bio-Electrochemical Process of Sodic-Saline Micro flora for Microbial Fuel Cells

2013

View full text Add to dashboard Cite

A microbial consortium was sampled from a sodic-saline soil, due to their high saline nature. Interestingly, an anode-respiring bacterium was reaping at the -150 mV vs SCE from the sodic-saline soil. The focus of this study was to identify the extra cellular electron transfer process in the anode. The cyclic voltammetry experiments, conducted that direct electron transfer was achieved through the membrane bound cytochrome and excreted soluble cytochrome by the micro-flora. There midpoint potentials were -385 mV and 18 mV vs SCE, respectively. Further, this was confirmed by protein estimation, SDS-PAGE electrophoresis, and UV-Vis spectrometer. The supernatant solution from the single chamber microbial fuel cell (SCMFC) contains 363 µg/ml of protein and ~45 kDa molecular weight, deduced from SDS-PAGE analysis. UV-Vis spectrophotometer results exhibited the oxidized form of cytochrome at 410 nm. All these experiments reveals the cytochrome (membrane bound/ soluble excreted) played a vital role in the direct electron transfer in the SCMFC, seeded with sodic-saline inocula.

show abstract

Application of biocathodes and enrichment strategies as promising alternative for enhanced bioelectricity generation in microbial fuel cells

Cited by 3 publications

References 0 publications

The accurate use of impedance analysis for the study of microbial electrochemical systems

The accurate use of impedance analysis for the study of microbial electrochemical systems

Improvement of Microbial Fuel Cell Performance by Selection of Anodic Materials and Enrichment of Inoculum

Anodic Bio-Electrochemical Process of Sodic-Saline Micro flora for Microbial Fuel Cells

Contact Info

Product

Resources

About