Influence of microbial fuel cell with porous anode on voltage generation, chemical oxygen demand, chloride content and total dissolved solids (original) (raw)
Related papers
Comparative Study of Microbial Fuel Cell’s Performance Using Three Different Electrodes
Malaysian Journal of Analytical Science, 2018
Microbial Fuel Cell (MFC) is an alternative method of renewable energy which have gained considerable attention due to its capability to generate electricity and treat wastewater such as palm oil mill effluent (POME). MFC’s mechanism on its electrochemical process is still lacking and further studies is needed. The objectives of this study are (1) to determine the compatibility of MFC device in generating electricity by using three different electrodes and (2) to study the effect of sodium hydroxide (NaOH) to MFC’s performance. In this work, the MFC device is associated with 3 different electrodes which are carbon brush (CB), carbon cloth (CC) and pre-treated carbon cloth (PCC) on its anode chamber. There are 2 types of substrates used in this experiment which are POME with the presence of bacteria (POME+) and POME without bacteria in it (POME-). The experiment was carried out for 120 hours and its power generation was monitored. The experimental result shows that PCC with POME+ yie...
PERFORMANCE STUDIES OF MICROBIAL FUEL CELL
Microbial fuel cells (MFCs) have gained a lot of attention in recent years for its ability to convert organic matter into electricity in the presence of microbes. Lot of research has been carried out on using wide range of substrates like acetate, glucose, monosaccharaides, domestic wastewater, industrial wastewater etc. Phenol and detergent are the major toxic components from industrial and domestic wastewater. If it is left untreated it can have detrimental effect on all kinds of aquatic life. In industries there are methods available for the treatment of these contaminants; however research on use of MFCs for treatment of these contaminants is still in infant stage. Using MFC will have a dual advantage of wastewater treatment as well as electricity generation. In this study a dual-chamber MFC was fabricated with a CMI 7000 membrane separating the chambers and carbon electrodes for both anode and cathode. Experiments were carried out to study the impact of microbes, type of substrate, substrate concentration and substrate refilling at regular intervals on voltage generated by MFC. Performance of MFC was studied by determining the voltage across 1kΩ resistor. Furthermore, Industrial waste water from a local soap industry was used as a substrate along with the other substrates prepared in-house. Results showed that a stable voltage of around 134mV can be obtained with phenol as substrate along with a mixed culture of pseudomonas aeruginosa and shewanella putrefaciens in comparison with all other combinations of substrates and microbes.
Zenodo (CERN European Organization for Nuclear Research), 2023
The growing concern of environmental pollution due to the excessive exploitation of fossil fuel has shifted attention to a more renewable source of procuring energy one of them being the microbial fuel cells. The development of MFC is essentially based on the potential of bacteria to generate electrons by metabolizing the substrate (sewage wastewater, here). The mechanism of working of microbial fuel cells is mentioned. The use of sewage wastewater to tap electricity while simultaneously decreasing the COD (Chemical Oxygen Demand) level in the water for it's safe disposal with efficient materials for the PEM (Proton Exchange Membrane), cathode, mediators etc. have been reviewed. The best mode of operation of MFC to generate maximum power density in both single and double chambered MFC has been explored.
The Effects of Salinity, pH and Temperature on the Performance of a Microbial Fuel Cell
Waste and Biomass Valorization, 2016
Purpose In order to develop microbial fuel cells (MFCs) as a wastewater treatment technology, it is necessary to investigate the performance of these systems under various operating conditions. This study investigated the effect of salinity, pH and temperature on the performance of a dual chamber MFC. Methods All experiments were conducted in batch mode using synthetic wastewater as a medium (based on approximately 0.55 gCOD/L glucose). The performance was evaluated in terms of chemical oxygen demand (COD) removal efficiency, coulombic efficiency (CE) and power production. Results Good electrochemical performance (P max 66 mW/ m 2) and COD removal efficiency (70 %) were maintained up to a salinity of 4.1 g/L, but P max decreased by 92 % and COD removal by 25.3 %, as the salinity was raised to 6.7 g/L. The optimum CE (13 %) was achieved at 4.1 g/L. Maximum power density was improved by 37 % (P max 50.6 mW/m 2) as the pH of the anolyte was increased from 6 to 9, while the optimum CE (15 %) was achieved at pH 7. Moreover, maximum power density and CE were both improved by 64 % (P max 59 mW/m 2) and 211 % (CE 14 %), when the operating temperature was raised from 24 to 35°C. The COD removal efficiency remained approximately constant (75-80 %) for all pH and temperature changes. Main Conclusions These results indicate the great influence of salinity, pH and temperature on MFC performance in terms of power generation and wastewater treatment.
Development of Microbial Fuel Cells and Electrode Designs with Waste Water Anaerobes
Greener Journal of Biological Sciences, 2012
Two designs of microbial fuel cells have been developed. In the first type, a Single Chambered-Microbial Fuel Cell of 200ml capacity was constructed with the cathode and anode made of carbon brushes in a 'T' shaped configuration, attached in Cloth Electrode Assembly. In the second type, multiple anodes attached in a circuit, were used in developing a Multi Anode Single Chambered-Microbial Fuel Cell of 100ml capacity along with a common cathode made of graphite powder and adhesive, hardened by air drying. The generation of voltage and current was observed with both designs. Three types of substrates viz Carboxy-Methyl-Cellulose, Dextrose and Sodium Acetate were used with anaerobic microorganisms grown from waste water. Nernst Equation have been used to calculate maximum cell voltage due to ionic reaction of sodium acetate. The main purpose of the study was to validate workability of a novel MFC design in terms of current generation and cheap materials, hence showing current generation could be increased with multiple anodes sharing a common cathode and also providing possibility for serial connectivity for increasing voltage output.
Malaysian Journal of Microbiology, 2018
Aims: To study the performance of SMFC in the terms of power generation and toxic metals removal. This study was also focused on the characterization of SMFC electro-microbiology. Methodology and results: A SMFC was designed and loaded with sediment and overlying water. This SMFC was synchronized with wireless data logger acquisition system. The toxic metals removal capacity was measured by atomic absorption spectroscopy. The characterization of SMFC bacteria was done by 16S rRNA. In this study the experiments were carried out in a dual-chamber SMFC with external resistances 30 kΩ-50 Ω. The SMFC was produced power about 630 mV with maximum power density 40 mW/m 2 and current density 250 mA/m 2. After 120 days of operation, SMFC removed cadmium and copper about 22.6 and 150 mg/kg, respectively. The SMFC also showed high cadmium (86%) and copper (90%) removal at pH 7.0 and temperature 40 °C. The most dominant bacterial community at anode and cathode was identified as Pseudomonas spp. which could be function as exoelectrogen. Conclusion, significance and impact of the study: The results indicated that the SMFC system could be applied as a long term and effective tool for the removal of cadmium and copper contaminated sediments and supply power for commercial devices. The Pseudomonas spp. may be used as a genetic donor for the other non-exoelectrogens strains.
Proceeding International Conference on Science and Engineering, 2017
The performance of electricity producing of Dual Chamber Microbial Fuel Cells (MFCs) using wastewater of tempe industries without glucose addition (as control substrate) and with (2% and 4%) glucose addition was observed. The anode chamber contained a waste substrate and a cathode chamber contained a 0.1 M Potassium Permanganate electrolyte solution. The salt bridge was required to stabilize the charge between the cathode and anode chambers, and the electrodes attached to the anode and cathode chambers as the electron catcher. Voltages and currents were measured using multimeter. Optical Density measured at 486 nm wavelengths was performed to estimate bacterial growth activity. All of the cells were observed for 72 hours of running time. The results of Optical Density curves showed an increasing trend of absorbance during 72 hours of running time. These were in agreement with the resulting power density, which tended to increase until the 48th hour and then relatively stable especia...
Environmental Earth Sciences, 2014
Your article is protected by copyright and all rights are held exclusively by Springer-Verlag Berlin Heidelberg. This e-offprint is for personal use only and shall not be selfarchived in electronic repositories. If you wish to self-archive your article, please use the accepted manuscript version for posting on your own website. You may further deposit the accepted manuscript version in any repository, provided it is only made publicly available 12 months after official publication or later and provided acknowledgement is given to the original source of publication and a link is inserted to the published article on Springer's website. The link must be accompanied by the following text: "The final publication is available at link.springer.com".
Performance Of Earthen Pot Microbial Fuel Cell Using Anodic Effluent As Cathodic Electrolyte
Performance of single chambered earthen pot Microbial fuel cells (MFC) was investigated to treat synthetic wastewater under continuous mode of operation using air and anode effluent as a cathode electrolyte. Stainless steel (SS) mesh with surface area 100 cm 2 was used as a both electrodes. Under continuous mode of operation, maximum power density of 12.0 and 16.44 mW/m 2 ; maximum current density of 126 and 160.6 mA/m 2 and maximum volumetric power of 929 and 1096 mW/m 3 were obtained using air and anode effluent as a cathode electrolyte respectively. Under continuous mode of operation, maximum chemical oxygen demand removal efficiency and maximum coulombic efficiency using air as a cathode electrolyte were 67-72% and 6.89%, respectively; whereas maximum chemical oxygen demand removal efficiency and maximum coulombic efficiency using anode effluent as a cathode electrolyte were 76-80% and 10.98%, respectively. Internal resistance of a cell changed with cathode electrolyte as well as with day of operation. Minimum internal resistance of the cell was 178 and 82 Ω using air and anode effluent as a cathode respectively. Maximum potential difference developed using both stainless steel electrodes was 0.344 and 0.329 V using air and anode effluent as a cathode electrolyte respectively.