Bacterial–fungal interactions enhance power generation in microbial fuel cells and drive dye decolourisation by an ex situ and in situ electro-Fenton process

Dios, M.A. Fernández de; Campo, Araceli González del; Fernández, Francisco J.; Rodrigo, Manuel A.; Pazos, Marta

doi:10.1016/j.biortech.2013.08.084

Cited by 83 publications

(27 citation statements)

References 33 publications

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“…However, the concentration of pollutant used was very low, which predicts poor performance for high pollutant concentration possibly because of large distances between anode and cathode of both reactors. Another modification in WBMFCs design was successfully demonstrated by Fernandez de Dios et al 67 In this study, dual chamber WBMFC was investigated for mineralization of low dye concentrations through in situ H 2 O 2 production (in situ Fenton oxidation). Maximum 82% dye (Lissamine green dye and Crystal Violet) mineralization efficiency was obtained with simultaneous power production of 12.3 W m -3 .…”

Section: Microbial Fuel Cells Configuration/architecturementioning

confidence: 99%

“…64,65 Moreover, formation of H 2 O 2 is also possible in the presence of G. sulfurreducens strain using graphite carbon as cathode. 66 However, G. sulfurreducens species are highly sensitive to oxygen therefore, Fernantez de Dios et al 67 suggested the use of Shewanella species which is a facultative exoelectrogen and obtained 82% mineralization of dye mixture through H 2 O 2 production in the cathode chamber of WBMFCs. In lieu of pure culture, Rozendal et al 49 investigated the synthesis of H 2 O 2 by inoculating anode chamber by microbial consortium obtained from MFCs for carbon and nitrogen removal.…”

Section: Microbial Communitiesmentioning

confidence: 99%

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Recent advances, challenges and prospects of in situ production of hydrogen peroxide for textile wastewater treatment in microbial fuel cells

Asghar

Raman

Daud

2014

J of Chemical Tech & Biotech

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Application of the Fenton process for textile wastewater treatment is limited due to high treatment cost, substantially contributed by the un‐availability of cheap hydrogen peroxide. Therefore, alternative methods for hydrogen peroxide production are in demand. One such option is in situ hydrogen peroxide production using a wastewater based microbial fuel cell (WBMFC). However, not much have been published regarding in situ production of hydrogen peroxide for textile wastewater treatment in a WBMFC. Therefore, in this work the concept, advantages, challenges and prospects of using WBMFC to treat textile wastewater by simultaneously producing hydrogen peroxide (hence in situ hydrogen peroxide) and power are reviewed. The concept of WBMFC is the reduction of oxygen in the presence of electrons and protons from the anode chamber to produce hydrogen peroxide with simultaneous power production. This review confirms that use of dual chambers, proton exchange membrane, domestic or municipal wastewater/Geobacter Sulfurreducens or Shewanella species, pure graphite cathode, ammonia and heat treated carbon‐based anode can treat most textile wastewaters. However, single chamber WBMFCs can be used as a low power source for an electro‐Fenton reactor. Power produced can be used to provide energy for aeration required in the WBMFC, thus providing an integrated and sustainable solution for textile wastewater treatment. © 2014 Society of Chemical Industry

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Section: Microbial Fuel Cells Configuration/architecturementioning

confidence: 99%

Section: Microbial Communitiesmentioning

confidence: 99%

Recent advances, challenges and prospects of in situ production of hydrogen peroxide for textile wastewater treatment in microbial fuel cells

Asghar

Raman

Daud

2014

J of Chemical Tech & Biotech

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“…Synthesis of H 2 O 2 has been witnessed experimentally by a few authors by replacing expensive Pt cathodes with simple and low cost graphite electrodes . This is because two‐electron oxygen reduction involves incomplete conversion of oxygen and catalyst with poor catalytic properties .…”

Section: Introductionmentioning

confidence: 99%

Reactivity, stability, and thermodynamic feasibility of H₂O₂/H₂O at graphite cathode: Application of quantum chemical calculations in MFCs

Asghar

Raman

Daud

et al. 2017

Env Prog and Sustain Energy

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A microbial fuel cell (MFC) is a sustainable technology which commonly uses graphite as cathode for the production of hydrogen peroxide. Besides, water formation through four‐electron oxygen reduction mechanism is a commonly observed product. Determining the selectivity of H2O2/H2O reaction through experimental means is time consuming because of the slow kinetics of oxygen reduction reaction. Therefore, quantum chemical approaches are essential to comprehend the molecular nature of this process. Thus, density functional theory (DFT) was employed and quantum chemical calculations were performed to predict the chemical reactivity, stability, and thermodynamic properties of molecules participating in oxygen reduction reaction at graphite cathode. The calculations showed that graphene with higher value of “highest occupied molecular orbital” (HOMO), i.e., −4.544 eV has a higher tendency to donate electron for oxygen reduction reaction Furthermore, with an aim of predicting the most favorable conditions for H2O2 production, two different points, i.e., at the edge and middle of graphene plane were investigated. Calculated values showed that oxygen adsorption with the lowest energy requirement of 43.638 kcal/mol is energetically favorable at the edge of graphene plane. Nevertheless, oxygen complexes (O2*, HOO*, and HO*) characterized by high HOMO values −4.96, −4.37, and −4.34 eV are highly polarizable in the middle of the graphene plane. Furthermore, thermodynamic feasibility analysis showed that oxygen reduction required for hydrogen peroxide production had lower ΔG values of −90.94 (edge) and −98.44 (middle) kcal/mole than that of water synthesis (i.e., ΔG = −48.37(edge), −48.97 (middle) kcal/mole) at two‐electron reduction step. Therefore, it was concluded that H2O2 which followed the lowest energy pathway would be more thermodynamically feasible compared to water synthesis. © 2017 American Institute of Chemical Engineers Environ Prog, 37: 1291–1304, 2018

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“…In order to reduce these costs, in a previous study [14], it was proved that the demand of energy could be supplied by sustainable alternative energy sources such as MFCs.…”

Section: Introductionmentioning

confidence: 99%

“…For this reason, several attempts to increase the electricity generation from MFCs have been made, including modifications of the anode electrode material, alterations of the electrode design, biofilms, and the addition of mediators or a particulate substrate to the anode [21–24]. Therefore, these parameters will be evaluated in the present study in order to increase the yield and power densities that could, therefore, make it practical to use MFCs as power sources for an AOP such as the electro-Fenton process [14, 25]. …”

Section: Introductionmentioning

confidence: 99%

Application of Electro-Fenton Technology to Remediation of Polluted Effluents by Self-Sustaining Process

Dios

Iglesias

Pazos

2014

The Scientific World Journal

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The applicability of electro-Fenton technology to remediation of wastewater contaminated by several organic pollutants such as dyes and polycyclic aromatic hydrocarbons has been evaluated using iron-enriched zeolite as heterogeneous catalyst. The electro-Fenton technology is an advanced oxidation process that is efficient for the degradation of organic pollutants, but it suffers from the high operating costs due to the need for power investment. For this reason, in this study microbial fuel cells (MFCs) were designed in order to supply electricity to electro-Fenton processes and to achieve high treatment efficiency at low cost. Initially, the effect of key parameters on the MFC power generation was evaluated. Afterwards, the degradation of Reactive Black 5 dye and phenanthrene was evaluated in an electro-Fenton reactor, containing iron-enriched zeolite as catalyst, using the electricity supplied by the MFC. Near complete dye decolourization and 78% of phenanthrene degradation were reached after 90 min and 30 h, respectively. Furthermore, preliminary reusability tests of the developed catalyst showed high degradation levels for successive cycles. The results permit concluding that the integrated system is adequate to achieve high treatment efficiency with low electrical consumption.

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Bacterial–fungal interactions enhance power generation in microbial fuel cells and drive dye decolourisation by an ex situ and in situ electro-Fenton process

Cited by 83 publications

References 33 publications

Recent advances, challenges and prospects of in situ production of hydrogen peroxide for textile wastewater treatment in microbial fuel cells

Recent advances, challenges and prospects of in situ production of hydrogen peroxide for textile wastewater treatment in microbial fuel cells

Reactivity, stability, and thermodynamic feasibility of H₂O₂/H₂O at graphite cathode: Application of quantum chemical calculations in MFCs

Application of Electro-Fenton Technology to Remediation of Polluted Effluents by Self-Sustaining Process

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Bacterial–fungal interactions enhance power generation in microbial fuel cells and drive dye decolourisation by an ex situ and in situ electro-Fenton process

Cited by 83 publications

References 33 publications

Recent advances, challenges and prospects of in situ production of hydrogen peroxide for textile wastewater treatment in microbial fuel cells

Recent advances, challenges and prospects of in situ production of hydrogen peroxide for textile wastewater treatment in microbial fuel cells

Reactivity, stability, and thermodynamic feasibility of H2O2/H2O at graphite cathode: Application of quantum chemical calculations in MFCs

Application of Electro-Fenton Technology to Remediation of Polluted Effluents by Self-Sustaining Process

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Reactivity, stability, and thermodynamic feasibility of H₂O₂/H₂O at graphite cathode: Application of quantum chemical calculations in MFCs