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

scholarly journals Study of the Effect of Activated Carbon Cathode Configuration on the Performance of a Membrane-Less Microbial Fuel Cell

Catalysts ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 619
Author(s):  
M. L. Jiménez González ◽  
Carlos Hernández Benítez ◽  
Zabdiel Abisai Juarez ◽  
Evelyn Zamudio Pérez ◽  
Víctor Ángel Ramírez Coutiño ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Removal Efficiency ◽  
Internal Resistance ◽  
Cod Removal ◽  
The Other ◽  
Cod Removal Efficiency ◽  
Water Recirculation ◽  
Better Than

In this paper, the effect of cathode configuration on the performance of a membrane-less microbial fuel cell (MFC) was evaluated using three different arrangements: an activated carbon bed exposed to air (MFCE), a wetland immersed in an activated carbon bed (MFCW) and a cathode connected to an aeration tower featuring a water recirculation device (MFCT). To evaluate the MFC performance, the efficiency of the organic matter removal, the generated voltage, the power density and the internal resistance of the systems were properly assessed. The experimental results showed that while the COD removal efficiency was in all cases over 60% (after 40 days), the MFCT arrangement showed the best performance since the average removal value was 82%, compared to close to 70% for MFCE and MFCW. Statistical analysis of the COD removal efficiency confirmed that the performance of MCFT is substantially better than that of MFCE and MFCW. In regard to the other parameters surveyed, no significant influence of the different cathode arrangements explored could be found.

ANAMMOX-denitrification biomass in microbial fuel cell to enhance the electricity generation and nitrogen removal efficiency

2020 ◽  
Vol 31 (4-6) ◽  
pp. 249-264 ◽  
Author(s):  
Ivar Zekker ◽  
Gourav Dhar Bhowmick ◽  
Hans Priks ◽  
Dibyojyoty Nath ◽  
Ergo Rikmann ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Removal Efficiency ◽  
Nitrogen Removal ◽  
Electricity Generation

scholarly journals Energy capture and nutrients removal enhancement through a stacked constructed wetland incorporated with microbial fuel cell

2017 ◽  
Vol 76 (1) ◽  
pp. 28-34 ◽  
Author(s):  
Lei Xu ◽  
Yaqian Zhao ◽  
Tongyue Wang ◽  
Ranbin Liu ◽  
Fei Gao
Keyword(s):  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Removal Efficiency ◽  
Oxygen Demand ◽  
Open Circuit ◽  
Cod Removal ◽  
Electrical Performance ◽  
Electricity Production ◽  
Performance Reduction ◽  
Tiered System

To improve the sustainability of constructed wetlands (CWs), a novel tiered wetland system integrated with a microbial fuel cell (MFC) was developed in this study. Compared to the single stage CW, chemical oxygen demand (COD) removal efficiency was improved from 83.2% to 88.7%. More significantly, this tiered system significantly enhanced total nitrogen removal efficiency (an increase from 53.1% to 75.4%). In terms of MFC integration, a gradually decreased performance in electricity production was observed during its 3 months of operation (the voltage dropped from nearly 600 mV to less than 300 mV), which resulted in a reduction of power density from around 2 W/m3 to less than 0.5 W/m3. The deterioration in performance of the air-cathode is the main reason behind this, since the electrode potential of the cathode under open circuit reduced from 348.5 mV to 49.5 mV while the anode potential kept constant at around −400 mV. However, in spite of its electrical performance reduction, it was proved that MFC integration enhanced COD removal and the nitrification process. Further work is needed to improve the stability and feasibility of this new system.

Process engineering for stable power recovery from dairy wastewater using microbial fuel cell

2021 ◽  
Vol 46 (4) ◽  
pp. 3171-3182 ◽  
Author(s):  
Payel Choudhury ◽  
Rup Narayan Ray ◽  
Tarun Kanti Bandyopadhyay ◽  
Bikram Basak ◽  
Muthusivaramapandian Muthuraj ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Process Engineering ◽  
Dairy Wastewater ◽  
Power Recovery

Sediment microbial fuel cell with floating biocathode for organic removal and energy recovery

2011 ◽  
Vol 6 (4) ◽  
pp. 569-574 ◽  
Author(s):  
Aijie Wang ◽  
Haoyi Cheng ◽  
Nanqi Ren ◽  
Dan Cui ◽  
Na Lin ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Energy Recovery ◽  
Sediment Microbial Fuel Cell ◽  
Organic Removal

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.

scholarly journals Prompt nitrogen removal by controlling the oxygen concentration in sediment microbial fuel cell systems: the electrons allocation and its microbial mechanism

2020 ◽  
Vol 81 (6) ◽  
pp. 1209-1220
Author(s):  
Weiping Sima ◽  
Ruixiang Ma ◽  
Feixian Yin ◽  
Haodong Zou ◽  
Hong Li ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Removal Efficiency ◽  
Nitrogen Removal ◽  
Cell System ◽  
Sediment Microbial Fuel Cell ◽  
Organic Sediment ◽  
Key Factor ◽  
Do Concentration ◽  
Total Nitrogen Removal

Abstract It has been proved that the nitrogen can be removed from the sediment in a sediment microbial fuel cell system (SMFCs), but the competition between nitrate and oxygen for electrons would be a key factor that would affect the removal efficiency, and its mechanism is not clear. Based on organic sediment fuel, an SMFC was constructed, and the influence of dissolved oxygen (DO) on nitrogen transformation and cathodic microbial communities was investigated. The results showed that the best total nitrogen removal efficiency of 60.55% was achieved at DO level of 3 mg/L. High DO concentration affected the removal efficiency through the electrons' competition with nitrate, while low DO concentration suppressed the nitrification. Comamonas, Diaphorobacter and Brevundimonas were the three dominant genera responsible for denitrification at DO concentration of 3 mg/L in this study. The establishment of SMFCs for nitrogen removal by regulating DO level would offer a promising method for sediment treatment.

Assessment of organic removal in series- and parallel-connected microbial fuel cell stacks

2017 ◽  
Vol 22 (6) ◽  
pp. 739-747 ◽  
Author(s):  
Taeyoung Kim ◽  
Sukwon Kang ◽  
Hyun Woo Kim ◽  
Yee Paek ◽  
Je Hoon Sung ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Organic Removal ◽  
In Series
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