Submersible microbial fuel cell for electricity production from sewage sludge

2011 ◽  
Vol 64 (1) ◽  
pp. 50-55 ◽  
Author(s):  
Yifeng Zhang ◽  
Lola Gonzalez Olias ◽  
Prawit Kongjan ◽  
Irini Angelidaki
Keyword(s):  
Power Generation ◽  
Fuel Cell ◽  
Sewage Sludge ◽  
Microbial Fuel Cell ◽  
Power Density ◽  
Oxygen Demand ◽  
Maximum Power ◽  
Electricity Production ◽  
Maximum Power Density ◽  
Sludge Concentration

A submersible microbial fuel cell (SMFC) was utilized to treat sewage sludge and simultaneously generate electricity. Stable power generation (145 ± 5 mW/m2, 470 Ω) was produced continuously from raw sewage sludge for 5.5 days. The maximum power density reached 190 ± 5 mW/m2. The corresponding total chemical oxygen demand (TCOD) removal efficiency was 78.1 ± 0.2% with initial TCOD of 49.7 g/L. The power generation of SMFC was depended on the sludge concentration, while dilution of the raw sludge resulted in higher power density. The maximum power density was saturated at sludge concentration of 17 g-TCOD/L, where 290 mW/m2 was achieved. When effluents from an anaerobic digester that was fed with raw sludge were used as substrate in the SMFC, a maximum power density of 318 mW/m2, and a final TCOD removal of 71.9 ± 0.2% were achieved. These results have practical implications for development of an effective system to treat sewage sludge and simultaneously recover energy.

scholarly journals Effect of substrate type and concentration on the performance of a double chamber microbial fuel cell

2019 ◽  
Vol 81 (7) ◽  
pp. 1336-1344 ◽  
Author(s):  
Zia Ullah ◽  
Sheikh Zeshan
Keyword(s):  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Power Density ◽  
Oxygen Demand ◽  
Cod Removal ◽  
Maximum Power ◽  
Maximum Power Density ◽  
Ohmic Losses ◽  
Different Types ◽  
Double Chamber

Abstract The microbial fuel cell (MFC) provides new opportunities for energy generation and wastewater treatment through conversion of organic matter into electricity by electrogenic bacteria. This study investigates the effect of different types and concentrations of substrates on the performance of a double chamber microbial fuel cell (DCMFC). Three mediator-less laboratory-scale DCMFCs were used in this study, which were equipped with graphite electrode and cation exchange membrane. The MFCs were fed with three different types of substrates (glucose, acetate and sucrose) at a chemical oxygen demand (COD) concentration of 1,000 mg/L. The selected substrate (acetate) was studied for three different concentrations of 500, 2,000 and 3,000 mg/L of COD. Results demonstrated that acetate was the best substrate among the three different substrates with maximum power density and COD removal of 91 mW/m2 and 77%, respectively. Concentration of 2,000 mg/L was the best concentration in terms of performance with maximum power density and COD removal of 114 mW/m2 and 79%, respectively. The polarization curve shows that ohmic losses were dominant in DCMFCs established for all three substrates and concentrations.

scholarly journals Energy Harvesting from Sugarcane Bagasse Juice using Yeast Microbial Fuel Cell Technology

REAKTOR ◽  
2021 ◽  
Vol 21 (2) ◽  
pp. 52-58
Author(s):  
Marcelinus Christwardana ◽  
Linda Aliffia Yoshi ◽  
J. Joelianingsih
Keyword(s):  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Power Density ◽  
Sugarcane Bagasse ◽  
Current Density ◽  
Sugar Content ◽  
Maximum Power ◽  
Biofuel Cell ◽  
Maximum Power Density ◽  
Menten Constant

This study demonstrates the feasibility of producing bioelectricity utilizing yeast microbial fuel cell (MFC) technology with sugarcane bagasse juice as a substrate. Yeast Saccharomyces cerevisiae was employed as a bio-catalyst in the production of electrical energy. Sugarcane bagasse juice can be used as a substrate in MFC yeast because of its relatively high sugar content. When yeast was used as a biocatalyst, and Yeast Extract, Peptone, D-Glucose (YPD) Medium was used as a substrate in the MFC in the acclimatization process, current density increased over time to reach 171.43 mA/m2 in closed circuit voltage (CCV), maximum power density (MPD) reached 13.38 mW/m2 after 21 days of the acclimatization process. When using sugarcane bagasse juice as a substrate, MPD reached 6.44 mW/m2 with a sugar concentration of about 5230 ppm. Whereas the sensitivity, maximum current density (Jmax), and apparent Michaelis-Menten constant (𝐾𝑚𝑎𝑝𝑝) from the Michaelis-Menten plot were 0.01474 mA/(m2.ppm), 263.76 mA/m2, and 13594 ppm, respectively. These results indicate that bioelectricity can be produced from sugarcane bagasse juice by Saccharomyces cerevisiae.Keywords: biomass valorization, biofuel cell, acclimatization, maximum power density, Michaelis-Menten constant

Studies on Power Generation and Wastewater Treatment Using Modified Single Chamber Microbial Fuel Cell

2015 ◽  
Vol 1113 ◽  
pp. 823-827 ◽  
Author(s):  
Nik Mahmood Nik Azmi ◽  
Nazlee Faisal Ghazali ◽  
Ahmad Fikri ◽  
Md Abbas Ali
Keyword(s):  
Power Generation ◽  
Wastewater Treatment ◽  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Mixed Culture ◽  
Power Density ◽  
Oxygen Demand ◽  
Wastewater Sample ◽  
Single Chamber ◽  
Wastewater Samples

A membrane-less and mediator-less system was designed and tested with wastewater sample as fuel to generate electricity. Microorganisms were first isolated from the wastewater sample to pure culture and were used as the ‘machinery’ that converts wastewater into energy. The wastewater samples were treated either by sterilization or non-sterilization methods. These tests were run using a modified air-cathode single chamber microbial fuel cell (MFC). By sterilizing the wastewater, the calculated power density was much lower compared to non-sterilized wastewater indicating a significant role of microbial activity in the SCMFC system and substrate availability. Furthermore, mixed culture was observed to give larger power density compared to an individual microbe (18.42 ± 5.84 mW/m2 for mixed culture and 8.82 ± 4.56 mW/m2 to 9.46 ± 4.87 mW/m2 for individual microbe, Bukholderi capecia and Acidovorax sp. respectively) to prove that larger power value could be achieved with a mixed microbial system. In addition, the system proved to remove 68.57% of chemical oxygen demand (COD) of the wastewater sample tested. In conclusion, the designed SCMFC has been proven capable of power generation and wastewater treatment comparable to other SCMFCs to date.

Solar-assisted dual chamber microbial fuel cell with a CuInS2photocathode

RSC Advances ◽  
2014 ◽  
Vol 4 (45) ◽  
pp. 23790-23796 ◽  
Author(s):  
Siwen Wang ◽  
Xiaoling Yang ◽  
Yihua Zhu ◽  
Yunhe Su ◽  
Chunzhong Li
Keyword(s):  
Electron Transfer ◽  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Power Density ◽  
Current Density ◽  
Maximum Power ◽  
Maximum Power Density ◽  
Dual Chamber ◽  
A Current

A solar-assisted microbial fuel cell (MFC) was prepared with flower-like CuInS2(CIS) as the photocathode. CIS with flower flakes and monodispersity could be beneficial to electron transfer under irradiation. The solar MFC achieved a maximum power density of 0.108 mW cm−2and a current density of 0.62 mA cm−2.

Nitrifying biocathode enables effective electricity generation and sustainable wastewater treatment with microbial fuel cell

2009 ◽  
Vol 59 (9) ◽  
pp. 1803-1808 ◽  
Author(s):  
Hung-Thuan Tran ◽  
Dae-Hee Kim ◽  
Se-Jin Oh ◽  
Kashif Rasool ◽  
Doo-Hyun Park ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Power Density ◽  
Treatment Plant ◽  
Cell Voltage ◽  
Maximum Power ◽  
Maximum Power Density ◽  
Organics Removal ◽  
Sustainable Wastewater Treatment

Simultaneous organics removal and nitrification using a novel nitrifying biocathode microbial fuel cell (MFC) reactor were investigated in this study. Remarkably, the introduction of nitrifying biomass into the cathode chamber caused higher voltage outputs than that of MFC operated with the abiotic cathode. Results showed the maximum power density increased 18% when cathode was run under the biotic condition and fed by nitrifying medium with alkalinity/NH4+-N ratio of 8 (26 against 22 mW/m2). The voltage output was not differentiated when NH4+-N concentration was increased from 50 to 100 mg/L under such alkalinity/NH4+-N ratio. However, interestingly, the cell voltage rose significantly when the alkalinity/NH4+-N ratio was decreased to 6. Consequently, the maximum power density increased 68% in compared with the abiotic cathode MFC (37 against 22 mW/m2). Polarization curves demonstrated that both activation and concentration losses were lowered during the period of nitrifying biocathode operation. Ammonium was totally nitrified and mostly converted to nitrate in all cases of the biotic cathode conditions. High COD removal efficiency (98%) was achieved. In light of the results presented here, the application of nitrifying biocathode is not only able to integrate the nitrogen and carbon removal but also to enhance the power generation in MFC system. Our system can be suggested to open up a new feasible way for upgrading and retrofitting the existing wastewater treatment plant by the use of MFC-based technologies.

Electricity production from beer brewery wastewater using single chamber microbial fuel cell

2008 ◽  
Vol 57 (7) ◽  
pp. 1117-1121 ◽  
Author(s):  
X. Wang ◽  
Y. J. Feng ◽  
H. Lee
Keyword(s):  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Power Density ◽  
Experimental Results ◽  
Electricity Production ◽  
Cathode Potential ◽  
Maximum Power Density ◽  
Anode Potential ◽  
Brewery Wastewater ◽  
Single Chamber

The performance of electricity production from beer brewery wastewater in a single chamber membrane-free microbial fuel cell (MFC) was investigated. Experimental results showed that the MFCs could generate electricity from full-strength wastewater (2,239 mg-COD/L, 50 mM PBS added) with the maximum power density of 483 mW/m2 (12 W/m3) at 30°C and 435 mW/m2 (11 W/m3) at 20°C, respectively. Temperature was found to have bigger impact on cathode potential than anode potential. Results suggested that it is feasible to generate electricity with the treatment of beer brewery wastewater.

scholarly journals Performance of the Salt Bridge Based Microbial Fuel Cell

2012 ◽  
Vol 1 (2) ◽  
pp. 115 ◽  
Author(s):  
Maksudur R. Khan ◽  
Ripon Bhattacharjee ◽  
M. S. A. Amin
Keyword(s):  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Power Density ◽  
Salt Bridge ◽  
Operating Conditions ◽  
Maximum Power ◽  
Optimum Operating ◽  
Organic Substrates ◽  
Maximum Power Density ◽  
Density Maximum

Electricity generation from readily biodegradable organic substrates accompanied by decolorization of azo dye was investigated using a Microbial fuel cell (MFC). Biodegradation was the dominant mechanism of the dye removal, and glucose was the optimal substrate for Red Cibacron-2G (RC) decolorization. Batch experiments were conducted to evaluate the performance of the MFC. As compared to traditional anaerobic technology higher decolorization efficiency was achieved by MFC. Effect of initial dye concentration and external resistance on power generation were studied. Polarization experiments were also directed to find the maximum power density. Maximum Power density of 100mW/m2 (1.04A/m2) was recorded at optimum operating conditions.

Continuous Electricity Generation and Pollutant Removal from Swine Wastewater Using a Single-Chambered Air-Cathode Microbial Fuel Cell

2014 ◽  
Vol 953-954 ◽  
pp. 158-162 ◽  
Author(s):  
Chiu Yu Cheng ◽  
Cheng Che Li ◽  
Ying Chien Chung
Keyword(s):  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Power Density ◽  
Electricity Generation ◽  
Large Scale ◽  
Pollutant Removal ◽  
Maximum Power ◽  
Swine Wastewater ◽  
Limiting Factor ◽  
Maximum Power Density

Microbial fuel cell (MFC) represents a new method for simultaneously swine wastewater treatment and electricity generation. However, few studies revealed the high electricity generation and pollutant removal using a large-scale single-chambered MFC in treating swine wastewater. Results indicated optimal hydraulic retention time (HRT) of swine wastewater was 8 d considering the removal efficiency and the power density. Under this condition, this MFC system removed 85.62% TCOD and 73.6% NH3 as well as achieved power density of 368 mW/m2. Results also showed the maximum power density of the MFC was 382.5±10.6 mW/m2 MFC at 350 Ω. TCOD concentration in the swine wastewater was limiting factor for power output. The maximum power density was Pmax= 385 mW/m2, with a half-saturation concentration of Ks=2,050 mg/l. To our knowledge, this is the first time to demonstrate the electricity characteristics of a large-scale single-chambered MFC in treating swine wastewater.

Microbial Fuel Cell for Sustainable Electricity Production from Seafood Wastewater

2012 ◽  
Vol 232 ◽  
pp. 812-815
Author(s):  
Hong Liang Sun ◽  
Hong Bin Lv ◽  
Wen Jing Nie
Keyword(s):  
Fuel Cell ◽  
Molecular Oxygen ◽  
Microbial Fuel Cell ◽  
Power Density ◽  
Electricity Generation ◽  
Electricity Production ◽  
Aerobic Respiration ◽  
Maximum Power Density ◽  
Substrate Conversion ◽  
Sustainable Electricity

To make the treatment of seafood wastewater more economical and sustainable, this study aims to examine electricity generation from seafood wastewater in MFC reactor. By supplying the MFCs with seafood wastewater, the maximum power density of 291.6 mW/m2 and CE of 20.3 % could be obtained. The substrate loss was attributed to diffusion of molecular oxygen from the cathode to the anode, which led to substrate conversion through aerobic respiration rather than electricity-producing pathway. This study provides a conceptual demonstration of seafood wastewater for electricity production using MFC technology.

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