Resilience of roof-top Plant-Microbial Fuel Cells during Dutch winter

Helder, M.; Strik, D.P.B.T.B.; Timmers, R.A.; Raes, Sanne M. T.; Hamelers, H.V.M.; Buisman, Cees J.N.

doi:10.1016/j.biombioe.2012.10.011

Cited by 84 publications

(33 citation statements)

References 21 publications

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“…The results indicate however that local buffer capacity, in companion with proton diffusion to the cathode, were able to prevent bulk acidification in the studied microcosms. Lowering the resistance in the external circuit from 500 Ω to on an a rooftop MFC (Helder et al 2013). Although they were not able to indicate a cause for this phenomena, from this work it could be observed that it was mainly due to a deterioration of cathode performance.…”

Section: Current Producing Metabolism Precedes Methanogenic Metabolismmentioning

confidence: 99%

Greenhouse gas emissions from rice microcosms amended with a plant microbial fuel cell

Arends

Speeckaert

Blondeel

et al. 2013

Appl Microbiol Biotechnol

118

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Methane (CH 4 ) release from wetlands is an important source of greenhouse gas emissions. Gas exchange occurs mainly through the aerenchyma of plants and production of greenhouse gases is heavily dependent on rhizosphere biogeochemical conditions (i.e. substrate availability and redox potential). It is hypothesized that by introducing a biocatalyzed anode electrode in the rhizosphere of wetland plants, a competition for carbon and electrons can be invoked between electrical current generating bacteria and methanogenic archaea. The anode electrode is part of a bioelectrochemical system (BES) capable of harvesting electrical current from microbial metabolism. In this work, the anode of a BES was introduced in the rhizosphere of rice plants (Oryza sativa) and the impact on methane emissions was monitored.Microbial current generation was able to outcompete methanogenic processes when the bulk matrix contained low concentrations of organic carbon, provided that the electrical circuit with the effective electro-active microorganisms was in place. When interrupting the electrical circuit or supplying an excess of organic carbon, methanogenic metabolism was able to outcompete current generating metabolism. The qPCR results showed hydrogenotrophic methanogens were the most abundant methanogenic group present, while mixotrophic or acetoclastic methanogens were hardly detected in the bulk rhizosphere or on the electrodes. Competition for electron donor and acceptor were likely the main drivers to lower methane emissions. Overall, electrical current generation with BESs is an interesting option to control CH 4 emissions from wetlands but needs to be applied in combination with other mitigation strategies to be successful and feasible in practice.

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Section: Current Producing Metabolism Precedes Methanogenic Metabolismmentioning

confidence: 99%

Greenhouse gas emissions from rice microcosms amended with a plant microbial fuel cell

Arends

Speeckaert

Blondeel

et al. 2013

Appl Microbiol Biotechnol

118

View full text Add to dashboard Cite

show abstract

“…Waterlogged system, such as rice paddy field has been demonstrated as starting http://dx.doi.org/10.1016/j.biortech.2015.05.098 0960-8524/Ó 2015 Elsevier Ltd. All rights reserved. places for PMFC applications (Kaku et al, 2008;Takanezawa et al, 2010), and other suitable locations include lands that are unsuitable for food production, such as salt marsh (Timmers et al, 2010) and green roofs (Helder et al, 2013). Natural and constructed wetlands are also ideal locations for PMFC application, because such protected ecosystem allows long-term and stable operation of PMFC electrodes without affected by detrimental invasion, and efficient microbial oxidation of organic matters enhances wetland capability for wastewater treatment.…”

Section: Introductionmentioning

confidence: 99%

Microbial community structure accompanied with electricity production in a constructed wetland plant microbial fuel cell

Xing

Ren

2015

Bioresource Technology

257

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“…In this paradigm, the electrons are transferred over an external load to the cathode where oxygen reduction to water takes place (De Schamphelaire et al, 2008;Strik et al, 2008). A plant-MFC can be integrated in a green roof, agricultural settings or in constructed wetlands (De Schamphelaire et al, 2008;Fang et al, 2013;Helder et al, 2013;Strik et al, 2008). However, plant-MFCs suffer from low performance due to large internal resistances, inconsistent substrate supply and competing reactions (Timmers et al, 2011;2012).…”

Section: Introductionmentioning

confidence: 99%

Enhanced disinfection of wastewater by combining wetland treatment with bioelectrochemical H2O2 production

Arends

Denhouwe

Verstraete

et al. 2014

Bioresource Technology

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A highly-loaded constructed wetland (up to 44 ± 21 gCOD m-2 d-1) was connected to a bioelectrochemical system (BES) to produce hydrogen peroxide for disinfection purposes. The anode delivered a current from the wetland effluent up to 3.5 A m-2 (maximum 62% anodic efficiency) but was limited in the supply of organic carbon. Hydrogen peroxide could be produced in situ in wetland effluent. Production rates were tested at various current densities with a maximum rate of 2.7 g m-2 electrode h-1 (4 h at 10 A m-2 , 41% cathodic efficiency). Little difference was observed between production rate in wetland effluent or a 0.3% NaCl solution. The resulting hydrogen peroxide (0.1%) was used to disinfect wetland effluent successfully (<75 CFU ml-1 after 1 h contact time). The combination of wetland water treatment with peroxide production in a BES thus enables generating higher water qualities, including disinfected water, without external input of chemicals.

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Resilience of roof-top Plant-Microbial Fuel Cells during Dutch winter

Cited by 84 publications

References 21 publications

Greenhouse gas emissions from rice microcosms amended with a plant microbial fuel cell

Greenhouse gas emissions from rice microcosms amended with a plant microbial fuel cell

Microbial community structure accompanied with electricity production in a constructed wetland plant microbial fuel cell

Enhanced disinfection of wastewater by combining wetland treatment with bioelectrochemical H2O2 production

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