scholarly journals A Microbial Fuel Cell Modified with Carbon Nanomaterials for Organic Removal and Denitrification

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
Njud S. Alharbi
Keyword(s):  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Carbon Nanomaterials ◽  
Removal Rate ◽  
Nitrate Removal ◽  
Fish Farming ◽  
Performance Potential ◽  
Potential Health ◽  
Organic Removal ◽  
Cell Electrode

This paper investigated microbial denitrification using electrochemical sources to replace organic matter as reductant. The work also involved developing a system that could be optimised for nitrate removal in applied situations such as water processing in fish farming or drinking water, where high nitrate levels represent a potential health problem. Consequently, the study examined a range of developments for the removal of nitrate from water based on the development of electrochemical biotransformation systems for nitrate removal. This also offers considerable scope for the potential application of these systems in broader bionanotechnology based processes. Furthermore, the work discussed the context of improved microbial fuel cell (MFC) performance, potential analytic applications, and further innovations using a bionanotechnology approach to analyse cell-electrode interactions. High nitrate removal rate of more than 95% was successfully achieved by using a MFC system modified with carbon nanomaterials.

Evaluation of microbial fuel cell coupled with aeration chamber and bio-cathode for organic matter and nitrogen removal from synthetic domestic wastewater

2009 ◽  
Vol 60 (6) ◽  
pp. 1409-1418 ◽  
Author(s):  
J. Cha ◽  
C. Kim ◽  
S. Choi ◽  
G. Lee ◽  
G. Chen ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Power Density ◽  
Nitrogen Removal ◽  
Hydraulic Retention Time ◽  
Loading Rate ◽  
Removal Rate ◽  
Nitrate Removal ◽  
Domestic Wastewater ◽  
Carbon And Nitrogen

For simultaneous carbon and nitrogen removal via single stream, a microbial fuel cell (MFC) coupled with an aeration chamber and a bio-cathode was investigated. Without catalysts and any additional buffer, the MFC produced electricity continuously and the power density reached 1.3 W/m3 at a loading rate of 1.6 kg COD/m3 d. Simultaneously, the COD and the nitrate removal rate were 1.4 kg COD/m3 d and 67 g NO3-N/m3 d, respectively. When the hydraulic retention time was changed from 6 to 0.75 hours, the power density significantly increased from 0.2 to 10.8 W/m3 due to an increase of cathodic potential. When the aeration chamber was removed and the nitrate was injected into the cathode, the power density increased to 3.7 W/m3. At a high recirculation rate of 10 ml/min, the power density and the nitrate removal rate greatly increased to 34 W/m3 and 294 g NO3−-N/m3 d, respectively.

Continuous Flow Microbial Fuel Cell for Organic Wastewater Treatment

2013 ◽  
Vol 777 ◽  
pp. 92-95
Author(s):  
Wei Ping Liu ◽  
Xia Fei Yin
Keyword(s):  
Wastewater Treatment ◽  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Continuous Flow ◽  
Removal Rate ◽  
Maximum Output Power ◽  
Maximum Output ◽  
Anode Chamber ◽  
Cathode Chamber ◽  
Organic Wastewater

A continuous flow double chamber microbial fuel cell (MFC) for wastewater treatment was constructed. Anaerobic activated sludge was used as bacterial source and simulated organic wastewater was used as substrate. Effluent of anode chamber was used directly as influent of the cathode chamber. The aerobic microorganisms could degrade organic matters further. The electricity production and organic wastewater treatment of the MFC were studied. The results show that the wastewater chemical oxygen demand (COD) of the total removal rate was 74.1%~77.45%, the anode chamber in which the removal rate of COD is 32.2%~35.3%, and COD removal efficiency of aerobic biological treatment in the cathode chamber was 60.2%~66.7%. The continuous flow system could improve the removal rate further. The maximum current density of MFC was 1.56 mAm-2, the maximum output power was 24.336 mWm-2.

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

Energies ◽  
2020 ◽  
Vol 13 (9) ◽  
pp. 2231 ◽  
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.

Increasing power recovery and organic removal efficiency using extended longitudinal tubular microbial fuel cell (MFC) reactors

2011 ◽  
Vol 4 (2) ◽  
pp. 459-465 ◽  
Author(s):  
Jung Rae Kim ◽  
Jorge Rodríguez ◽  
Freda R. Hawkes ◽  
Richard M. Dinsdale ◽  
Alan J. Guwy ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Removal Efficiency ◽  
Organic Removal ◽  
Power Recovery

Simultaneous anaerobic sulfide and nitrate removal coupled with electricity generation in Microbial Fuel Cell

2013 ◽  
Vol 129 ◽  
pp. 224-228 ◽  
Author(s):  
Jing Cai ◽  
Ping Zheng ◽  
Jiqiang Zhang ◽  
Zuofu Xie ◽  
Wei Li ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Electricity Generation ◽  
Nitrate Removal

A novel microbial fuel cell electrode design: prototyping a self-standing one-step bacteria-encapsulating bioanode with electrospinning

2021 ◽  
Author(s):  
Jérémie-Luc Sanchez ◽  
Christel Laberty-Robert
Keyword(s):  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Electrode Design ◽  
Electrospinning Technique ◽  
Fuel Cell Electrode ◽  
One Step ◽  
Set Up ◽  
Cell Electrode ◽  
Viable Method

In this study, the electrospinning technique is shown to be a viable method for the synthesis of a bacteria-encapsulating bioanode. A coaxial set-up was designed to yield in one step...

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