Improvement of the anodic bioelectrocatalytic activity of mixed culture biofilms by a simple consecutive electrochemical selection procedure

Liu, Ying; Harnisch, Falk; Fricke, Katja; Sietmann, Rabea; Schröder, Uwe

doi:10.1016/j.bios.2008.08.001

Cited by 226 publications

(167 citation statements)

References 41 publications

(6 reference statements)

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“…The redox peaks at formal potential of -0.372 V and -0.289 V resulted from the electrochemically active molecules in biofilm which also were obtained in previous studies (Liu et al 2005;Liu and Bond 2012a;Liu et al 2010a;Liu et al 2008a). …”

Section: Dependence Of Current On Sensed Frequency For Mature Biofilmsupporting

confidence: 83%

“…Similarly, the mass change was also derived from Sauerbrey equation (1). The current increased for about 15 h till to a maximum value of 530 μA/cm 2 , which is similar with that on general graphite/carbon or gold electrode with much higher surface area (Liu et al 2010a;Liu et al 2008b;. This implied that the biofilm can develop well using QCM-crystal as working electrode.…”

Section: Characterization Of Sensed Frequency and Current Producion Fsupporting

confidence: 70%

“…Voltammetric features in figures 5A and 5B further confirmed the typical electrochemically active biofilms were successfully developed on QCM-crystal surface in situ just like at usual carbon or gold electrodes (Gutman et al;Liu et al 2008a;Liu et al 2010b;Rodahl et al 1997).…”

Section: Dependence Of Current On Sensed Frequency For Mature Biofilmmentioning

confidence: 54%

“…The mixed-culture from domestic wastewater was inoculated and enriched were same as previously reported (Liu et al 2008a). In simple words, the electrochemically active bacteria from waste water were colonized under the anode poised at a constant potential of 0.2 V vs. Ag/AgCl reference electrode and the current was controlled by chronoamperometry in batch mode experiments with 150 mL bioreactor containing a 100 mL medium.…”

Section: Medium Inoculum Source and Enrichmentmentioning

confidence: 99%

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Real-time monitoring of electrochemically active biofilm developing behavior on bioanode by using EQCM and ATR/FTIR

Liu

Berná

Climent

et al. 2015

Sensors and Actuators B: Chemical

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It is crucial to study the bacterial attaching behavior for revealing information of electrochemically active biofilm on the interface of liquid/electrode in microbial fuel cells (MFCs). In the current study, mixed-culture from waste water as model bacteria was investigated for gaining more sight onto relationship between current and biomass or onto bioadhesion mechanism at the molecular level using Electrochemical Quartz Crystal Microbalance (EQCM) and Attenuated Total Reflection-SEIRAS (ATR-SEIRAS) combined with electrochemistry. From the frequency shift using Sauerbrey equation via EQCM the maximum cells mass of 11.5 μg/cm 2 was estimated for the mature biofilm. Notably, the highest current density of 110 μA/μg·cm 2 occurred before maximum biomass coming, which indicated that mature biofilm may not be an optimal state for enhancing power output of MFCs. Furthermore, the sensed biomass attached on electrode for mature biofilm will be constant for more than 40 h * Corresponding author, On the other hand, using ATR-SEIRAS techniques the obvious adsorbed water structure change during biofilm formation on electrode surface was observed and showed that the absorption bands linked to bacterial adsorption increased. It can be concluded that water adsorption accompanies the adsorbed bacteria and the cells number attaching on the electrode increased with time. Especially, the direct contact of bacteria and electrode via outer-membrane protein can be confirmed via series spectra at amideⅠand amideⅡ modes and water movement from negative bands displacing by adsorbed bacteria. Our study provided supplementary information about the interaction between the microbes and solid electron acceptors beyond traditional electrochemistry. It is expected to explore more information on electrochemically active microbial kinetics for improvement of their competence and understanding of attaching mechanisms in nature using our approach.

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Section: Dependence Of Current On Sensed Frequency For Mature Biofilmsupporting

confidence: 83%

Section: Characterization Of Sensed Frequency and Current Producion Fsupporting

confidence: 70%

Section: Dependence Of Current On Sensed Frequency For Mature Biofilmmentioning

confidence: 54%

Section: Medium Inoculum Source and Enrichmentmentioning

confidence: 99%

See 2 more Smart Citations

Real-time monitoring of electrochemically active biofilm developing behavior on bioanode by using EQCM and ATR/FTIR

Liu

Berná

Climent

et al. 2015

Sensors and Actuators B: Chemical

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“…Bioanodes were formed in duplicate using the procedure previously described [5,16]. Primary bioanodes were formed with 3 consecutive batches that contained wastewater, 10 mL food waste leachate, and 3.3% v/v activated sludge used as the inoculum.…”

Section: Bioanode Formationmentioning

confidence: 99%

Two-dimensional carbon cloth and three-dimensional carbon felt perform similarly to form bioanode fed with food waste

Blanchet

Erable

Solan

et al. 2016

Electrochemistry Communications

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OATAO is an open access repository that collects the work of Toulouse researchers and makes it freely available over the web where possible. a b s t r a c tTwo-dimensional carbon cloth and three-dimensional carbon felt were compared for their capacity to form bioanodes for food waste treatment. Wastewater was used as the dilution medium instead of a synthetic solution to be close to industrial conditions. In both cases, microbial cells were mainly wrapped around the fibers of the electrodes. The biofilms were around 80-120 μm thick with a 39.3% microbial volume ratio on carbon cloths. On carbon felt, the biofilms showed a lower microbial volume ratio of 16.3% on the upper layers but with a penetration depth of 200-800 μm. The biofilm patterns were different but they resulted in similar current density, around 3.5 A/m 2 .When chemically rich media have to be implemented, 2D cloth offers a worthwhile solution that can equal 3D porous materials.

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Microbial Fuel Cell for Biomass Energy Conversion

Karthikeyan

Xuan

Leung

2015

Handbook of Clean Energy Systems

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The vision of producing sustainable and renewable bioenergy is to contribute reducing the current global warming impact. It is well known that microorganisms can produce fuels, such as ethanol, butanol, methane, and hydrogen. Alternatively, microbes can produce electricity by means of microbial fuel cell (MFC). The recent development in energy biology has demonstrated the potential of MFC for commercial applications in converting renewable biomass and organic waste into electricity. The biomass sources are highly desirable because they are “carbon‐neutral.” Electrical energy can be extracted from organic waste matter and renewable biomass by microbial degradation. The major challenge of using microbial fuel cell is to increase power density for most of the envisaged applications, such as power monitoring electronic devices, light source of battery charger in off‐grid areas. A wide scope lies ahead in the scaling up of MFC for large‐scale conversion of organic waste and biomass into electricity for powering vehicles, mobile electronic devices or buildings. The use of waste organic from biomass is environment‐friendly and regarded as a renewable energy source. This article gives an overview of microbial fuel cell that covers the bioelectrochemical mechanisms, system and components, characterization, performance, and applications.

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Improvement of the anodic bioelectrocatalytic activity of mixed culture biofilms by a simple consecutive electrochemical selection procedure

Cited by 226 publications

References 41 publications

Real-time monitoring of electrochemically active biofilm developing behavior on bioanode by using EQCM and ATR/FTIR

Real-time monitoring of electrochemically active biofilm developing behavior on bioanode by using EQCM and ATR/FTIR

Two-dimensional carbon cloth and three-dimensional carbon felt perform similarly to form bioanode fed with food waste

Microbial Fuel Cell for Biomass Energy Conversion

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