scholarly journals Carbon Nanotube/Pt Cathode Nanocomposite Electrode in Microbial Fuel Cells for Wastewater Treatment and Bioenergy Production

2021 ◽  
Vol 13 (14) ◽  
pp. 8057
Author(s):  
Mostafa Ghasemi ◽  
Mehdi Sedighi ◽  
Yie Hua Tan
Keyword(s):  
Electron Microscopy ◽  
Power Generation ◽  
Wastewater Treatment ◽  
Carbon Nanotube ◽  
Microbial Fuel Cells ◽  
Energy Production ◽  
Catalytic Properties ◽  
Internal Resistance ◽  
Cod Removal ◽  
Cathode Catalyst

In this paper, we reported the fabrication, characterization, and application of carbon nanotube (CNT)-platinum nanocomposite as a novel generation of cathode catalyst in microbial fuel cells (MFCs) for sustainable energy production and wastewater treatment. The efficiency of the carbon nanocomposites was compared by platinum (Pt), which is the most effective and common cathode catalyst. This nanocomposite is utilized to benefit from the catalytic properties of CNTs and reduce the amount of required Pt, as it is an expensive catalyst. The CNT/Pt nanocomposites were synthesized via a chemical reduction technique and the electrodes were characterized by field emission scanning electron microscopy, electronic dispersive X-Ray analysis, and transmission electron microscopy. The nanocomposites were applied as cathode catalysts in the MFC to obtain polarization curve and coulombic efficiency (CE) results. The catalytic properties of electrodes were tested by linear sweep voltammetry. The CNT/Pt at the concentration of 0.3 mg/cm2 had the highest performance in terms of CE (47.16%), internal resistance (551 Ω), COD removal (88.9%), and power generation (143 mW/m2). In contrast, for the electrode with 0.5 mg/L of Pt catalyst, CE, internal resistance, COD removal, and power generation were 19%, 810 Ω, 96%, and 84.1 mW/m2, respectively. So, it has been found that carbon nanocomposite cathode electrodes had better performance for sustainable clean energy production and COD removal by MFC.

Graphene supported α-MnO2 nanotubes as a cathode catalyst for improved power generation and wastewater treatment in single-chambered microbial fuel cells

RSC Advances ◽  
2013 ◽  
Vol 3 (21) ◽  
pp. 7902 ◽  
Author(s):  
Santimoy Khilari ◽  
Soumya Pandit ◽  
M. M. Ghangrekar ◽  
Debabrata Das ◽  
Debabrata Pradhan
Keyword(s):  
Power Generation ◽  
Wastewater Treatment ◽  
Fuel Cells ◽  
Microbial Fuel Cells ◽  
Cathode Catalyst

scholarly journals Review and Concept Development for Electricity Generation from Municipal Solid Waste Using Mfcs

2016 ◽  
Vol 11 (2) ◽  
pp. 406-412
Author(s):  
Jahangeer Jahangeer ◽  
Pankaj Gupta ◽  
Shaktibala Shaktibala ◽  
Shamim Rayani
Keyword(s):  
Power Generation ◽  
Renewable Energy ◽  
Solid Waste ◽  
Microbial Fuel Cells ◽  
Electricity Generation ◽  
Surface Characteristics ◽  
Internal Resistance ◽  
Cod Removal ◽  
Waste Remediation ◽  
Renewable Energy Generation

The aim of this manuscript is to review and conceptualization of electricity generation from solid waste using Microbial Fuel Cells (MFCs) technology. MFCs technology has an ample future for both waste remediation and renewable energy generation due to an aerobic microbe produces less sludge in MFCs compared with conventional methods. Electricity can be generated from different organic matters such as fatty acids, proteins, wastewater, and carbohydrates etc. Elegant energy can be generated which helps for compensating the costs. The performance of MFCs depends on the system architecture, internal resistance, species and amount of bacteria on the anode, type of organic matter, chemical characteristics of the medium (pH, solution conductivity and chemical concentration) and the electrode surface characteristics. One set of practical experiment was performed using single chamber MFCs and the power generation along with COD removal was measured. The results show significant power generation and effective COD removal parallel in MFC cell. This study will help in design and research for renewable energy production and waste management.

scholarly journals Bioelectricity production from tofu wastewater using microbial fuel cells with microalgae Spirulina sp as catholyte

2020 ◽  
Vol 202 ◽  
pp. 08007
Author(s):  
Wahyu Zuli Pratiwi ◽  
Hadiyanto Hadiyanto ◽  
Purwanto Purwanto ◽  
Muthi’ah Nur Fadlilah
Keyword(s):  
Wastewater Treatment ◽  
Fuel Cells ◽  
Microbial Fuel Cells ◽  
Organic Waste ◽  
Oxygen Demand ◽  
Salt Bridge ◽  
Cod Removal ◽  
Biofuel Production ◽  
Pre Treatment ◽  
Made In

Microalgae-Microbial Fuel Cells (MMFCs) are very popular to be used to treat organic waste. MMFCs can function as an energy-producing wastewater pre-treatment system. Wastewater can provide an adequate supply of nutrients, support the large capacity of biofuel production, and can be integrated with existing wastewater treatment infrastructure. The reduced content of Chemical Oxygen Demand (COD) is one way to measure the efficiency of wastewater treatment. MMFCs reactors are made in the form of two chambers (anode and cathode) both of which are connected by a salt bridge. Tofu wastewater as an anode and Spirulina sp as a cathode. To improve MFCs performance which is to obtain maximum COD removal and electricity generation, nutrient NaHCO3 as the nutrient carbon source for Spirulina sp was varied. The system running phase on 12 days. The results were Spirulina sp treated with MFCs technology has better growth than non-MFCs. The MMFC generated a maximum power density of 21.728 mW/cm2 and achieved 57.37% COD removal. These results showed that the combined process was effective in treating tofu wastewater.

scholarly journals Wastewater Treatment and Electricity Production in a Microbial Fuel Cell with Cu–B Alloy as the Cathode Catalyst

Catalysts ◽  
2019 ◽  
Vol 9 (7) ◽  
pp. 572 ◽  
Author(s):  
Paweł P. Włodarczyk ◽  
Barbara Włodarczyk
Keyword(s):  
Wastewater Treatment ◽  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Microbial Fuel Cells ◽  
Oxygen Demand ◽  
Electricity Production ◽  
Cathode Catalyst ◽  
Similar Reduction ◽  
Fuel Cell Operation

The possibility of wastewater treatment and electricity production using a microbial fuel cell with Cu–B alloy as the cathode catalyst is presented in this paper. Our research covered the catalyst preparation; measurements of the electroless potential of electrodes with the Cu–B catalyst, measurements of the influence of anodic charge on the catalytic activity of the Cu–B alloy, electricity production in a microbial fuel cell (with a Cu–B cathode), and a comparison of changes in the concentration of chemical oxygen demand (COD), NH4+, and NO3– in three reactors: one excluding aeration, one with aeration, and during microbial fuel cell operation (with a Cu–B cathode). During the experiments, electricity production equal to 0.21–0.35 mA·cm−2 was obtained. The use of a microbial fuel cell (MFC) with Cu–B offers a similar reduction time for COD to that resulting from the application of aeration. The measured reduction of NH4+ was unchanged when compared with cases employing MFCs, and it was found that effectiveness of about 90% can be achieved for NO3– reduction. From the results of this study, we conclude that Cu–B can be employed to play the role of a cathode catalyst in applications of microbial fuel cells employed for wastewater treatment and the production of electricity.

scholarly journals Enhanced and Effective Degradation of Waste Water Treatment for Hydrogen and Bioelectricity Production

2020 ◽  
Vol 2 (1) ◽  
pp. 85
Keyword(s):  
Waste Water ◽  
Power Generation ◽  
Wastewater Treatment ◽  
Fuel Cells ◽  
Microbial Fuel Cells ◽  
Electricity Generation ◽  
Waste Water Treatment ◽  
Electrical Power ◽  
Microbial Environment ◽  
Free Environment

This paper summarises different methods used for the Electrical power generation using microorganisms in Microbial Fuel Cell (MFC), where power generation is done in a microbial environment. Microorganisms are used as catalysts to degrade the supplied source effectively. This bioelectricity production is carried out in an enhanced way in a pollution-free environment. This paper addresses different aspects of electricity generation with the help of microorganisms. Various types of Microbial fuel cells have been described based on their constructional details. One of the different power generation methods is wastewater treatment. Also, hydrogen is generated in this environment, which can be used in fuel cells. Different factors and catalysts used to produce bioelectricity are identified and analyzed. Finally, the power produced in those methods had been compared, and the best method is cited.

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