Plant/microbe cooperation for electricity generation in a rice paddy field

Kaku, Nobuo; Yonezawa, Natsuki; Kodama, Yoshio; Watanabe, Kazuya

doi:10.1007/s00253-008-1410-9

Cited by 282 publications

(176 citation statements)

References 23 publications

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“…This was established in a reactor type anode with a packed bed of similar granular electrode material. Kaku et al (2008) were also not able to detect decreased CH 4 emissions from Plant-MFCs in closed circuit in a rice field. On the other hand, it was shown that a closed circuit MFC was able to release 10 times less methane…”

Section: Current Producing Metabolism Precedes Methanogenic Metabolismmentioning

confidence: 82%

“…Kaku et al (2008) were not able to show lower CH 4 emissions in closed circuit operation of a Plant-MFC during a field trial in a rice paddy. In this work the results of a microcosm study are presented in which rice plants were grown in vermiculite with a BES in the rhizosphere.…”

Section: Introductionmentioning

confidence: 81%

“…These values are well within the same order of magnitude, therefore it has been hypothesized that current generating metabolism can mitigate CH 4 emissions from rice paddy soils and in more general terms, waterlogged wetlands (Cabezas da Rosa 2010;De Schamphelaire et al 2008;Hong et al 2009;Ishii et al 2008;Kaku et al 2008). Introducing an electrode (anode) in the rhizosphere of waterlogged plants possibly enables the removal of electrons from the commonly present methanogenic metabolism Cabezas da Rosa 2010;De Schamphelaire et al 2008;Kaku et al 2008). …”

Section: Introductionmentioning

confidence: 82%

“…To overcome this issue, plants have been introduced into the anode of a sediment-MFC creating a Plant-MFC which enables sustained current generation from organic matter due to rhizodeposition processes (Strik et al 2008). An example is the use of rice plants, as they are able to withstand prolonged inundation of their rhizosphere (De Schamphelaire et al 2008;Kaku et al 2008). …”

Section: Introductionmentioning

confidence: 99%

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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: 82%

Section: Introductionmentioning

confidence: 81%

Section: Introductionmentioning

confidence: 82%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

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

“…Recently proof of principle was delivered of renewable electricity generation via living higher plants in MFCs (Strik et al 2008a;De Schamphelaire et al 2008;Kaku et al 2008). Herein, the living plant is photosynthesizing and releasing a part of the produced organic materials via its roots into the root surroundings.…”

Section: Introductionmentioning

confidence: 99%

Renewable sustainable biocatalyzed electricity production in a photosynthetic algal microbial fuel cell (PAMFC)

Strik

Terlouw

Hamelers

et al. 2008

Appl Microbiol Biotechnol

170

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Electricity production via solar energy capturing by living higher plants and microalgae in combination with microbial fuel cells are attractive because these systems promise to generate useful energy in a renewable, sustainable, and efficient manner. This study describes the proof of principle of a photosynthetic algal microbial fuel cell (PAMFC) based on naturally selected algae and electrochemically active microorganisms in an open system and without addition of instable or toxic mediators. The developed solarpowered PAMFC produced continuously over 100 days renewable biocatalyzed electricity. The sustainable performance of the PAMFC resulted in a maximum current density of 539 mA/m 2 projected anode surface area and a maximum power production of 110 mW/m 2 surface area photobioreactor. The energy recovery of the PAMFC can be increased by optimization of the photobioreactor, by reducing the competition from non-electrochemically active microorganisms, by increasing the electrode surface and establishment of a further-enriched biofilm. Since the objective is to produce net renewable energy with algae, future research should also focus on the development of low energy input PAMFCs. This is because current algae production systems have energy inputs similar to the energy present in the outcoming valuable products.

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Fuel Cells: Enzymes and Microbes for Energy Production

Barrière¹

2005

Encyclopedia of Inorganic Chemistry

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The use of redox enzymes and bacteria as catalysts at the electrodes of fuel cells is reviewed with an emphasis on some inorganic aspects of the research. In biofuel cells, redox enzymes catalyze the oxidation of organic substrates like glucose at the anode or the reduction of electron acceptors like dioxygen at the cathode. Many of the redox enzymes have metal‐active sites that are of interest to the bioinorganic chemist. Moreover, efficient electrical linking between a redox enzyme and an electrode requires the mediation of a small electroactive molecule, capable of diffusing and shuttling electrons between the core of the enzyme and the electrode surface. These redox mediators may be coordination or organometallic complexes. In microbial fuel cells, the biocatalysts are living microorganisms, most often bacteria. At the anode, the bacteria metabolize organic substrates like sugars or acetate. In the absence of dioxygen or other natural electron acceptors, some species of bacteria may transfer electrons to the anode of a fuel cell. Different mechanisms for bacterial anodic electron transfer are proposed and discussed in this article. One common feature of these processes is the direct or indirect linking of the electrode surface to the outer‐membrane‐bound electron‐transfer chain of the respiratory system of bacteria. This system contains a chain of redox enzymes containing cytochrome‐type active sites that may be directly electrochemically addressed in some cases. At the cathode of microbial fuel cell, some bacteria may also accept electrons and catalyze the reduction of electron acceptors like nitrate, sulfate, and dioxygen. Given the importance of dioxygen reduction in most fuel cells, a perspective is given on the way inorganic chemistry may contribute to the design of efficient electrode catalysts through molecular, material, enzymatic, or biological approaches. Finally, the prospect of self‐sustained biological fuel cell is discussed with integration of plants with their anolyte as an in situ fuel provider in the form of root exudates, or enrichment of dioxygen in their catholyte with photosynthetic activity of algae. Although the emphasis is on the inorganic themes of biological fuel cell research, the important multidisciplinary approaches of the topic are put forward. This article also contains discussions on the relative performances and applications of both types of biological fuel cells.

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Plant/microbe cooperation for electricity generation in a rice paddy field

Cited by 282 publications

References 23 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

Renewable sustainable biocatalyzed electricity production in a photosynthetic algal microbial fuel cell (PAMFC)

Fuel Cells: Enzymes and Microbes for Energy Production

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