Enrichment of microbial community generating electricity using a fuel-cell-type electrochemical cell

A ceramic supported SOFC for operation at 950°C is being developed by Rolls Royce Fuel Cell Systems (RRFCS). In parallel with the evolving design of the fuel cell system, it is necessary to ensure reliability not only of the electrochemical cell, but also the main structure under both manufacture and operational constraints. With a ceramic based system for use at high temperature this presents particular challenges, and to address these, RRFCS is in partnership with leading academic institutions including Imperial College London and the University of Genoa supported by the European Union. This paper will identify potential areas of concern for reliability and integrity of the fuel cell system, and will indicate the work that is being undertaken to ensure reliability, including thermomechanical stresses arising from fluid flow, electrochemical reactions and operational temperature distributions; joining of components; assessment of the stresses within ceramic structures, manufacture tolerances of dimensions and material properties.

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Microbial community dynamics of microbial fuel cell in response to NiWO4/rGO nanocomposites as electrocatalyst and its correlation with electrochemical properties

Journal of Environmental Chemical Engineering ◽

10.1016/j.jece.2020.104668 ◽

2020 ◽

pp. 104668

Author(s):

Geetanjali ◽

Radha Rani ◽

Sanjay Kumar

Keyword(s):

Fuel Cell ◽

Microbial Community ◽

Electrochemical Properties ◽

Microbial Fuel Cell ◽

Community Dynamics ◽

Microbial Community Dynamics

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Effects of Concentration Variations on the Performance and Microbial Community in Microbial Fuel Cell Using Swine Wastewater

Energies ◽

10.3390/en13092231 ◽

2020 ◽

Vol 13 (9) ◽

pp. 2231 ◽

Cited By ~ 3

Author(s):

Hongjun Ni ◽

Kaixuan Wang ◽

Shuaishuai Lv ◽

Xingxing Wang ◽

Lu Zhuo ◽

...

Keyword(s):

Fuel Cell ◽

Microbial Community ◽

Microbial Fuel Cell ◽

Removal Rate ◽

Oxygen Demand ◽

Community Diversity ◽

Swine Wastewater ◽

Anode Chamber ◽

Response Characteristics ◽

Concentration Changes

The variation of substrate concentration in anode chamber directly affects the power generation efficiency and decontamination performance of microbial fuel cell (MFC). In this study, three concentrations of swine wastewater with 800 mg/L, 1600 mg/L and 2500 mg/L were selected as substrates, and the performance of MFC and response characteristics of anode microbial community were investigated. The results show that the concentration of a selected substrate is positively correlated with the output voltage of MFC and chemical oxygen demand (COD) removal rate. The microbial community diversity in the anode chamber and the performance of battery can be significantly affected when concentration changes in different ways, which helps to selectively cultivate the adaptable dominant bacteria to enhance the stability and decontamination performance of MFC. The community structure of anodic biofilm is mainly composed of Proteobacteria, Bacteroidetes, Firmicutes, Chloroflexi and Spirochaetae. These findings are meaningful to improve the treatment effects of swine wastewater and can help to find out the mechanism of varying concentration that influences the production of microorganisms in MFC.

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