Search for: microbial-fuel-cells
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    Bioelectricity Generation in a Soil Microbial Fuel Cell with Biocathode Denitrification

    , Article ; Volume 37, Issue 19 , 2015 , Pages 2092-2098 ; 15567036 (ISSN) Afsham, N ; Roshandel, R ; Yaghmaei, S ; Vajihinejad, V ; Sherafatmand, M ; Sharif University of Technology
    Taylor and Francis Inc  2015
    A soil microbial fuel cell was investigated that uses soil and groundwater to generate electricity. The cathode surface area and materials are always important for increasing power. Power density was shown to be a linear function of cathode surface area. Biofilm formation on the graphite cathode was observed to be helpful in enhancing power output and maximum performance reached 89.2 mW/m2. As an application for the insertion-type soil microbial fuel cell, nitrate removing was investigated in cathode. Nitrate was reduced in an aerobic cathode at the rate of 37.5 mg nitrate/lit/day and 55 mg nitrate/lit/day in anaerobic cathode  

    Investigate and Analysis of Experimental Integrated Energy System Based on Microbial Fuel Cell to Produce Electrical Energy, Wastewater Treatment, Carbon Dioxide Capturing and Biomass Production

    , M.Sc. Thesis Sharif University of Technology Bazdar, Elahe (Author) ; Roshandel, Ramin (Supervisor) ; Yaghmaei, Soheila (Supervisor)
    In this study, simultaneous production of bioelectricity and algal biomass, wastewater treatment and carbon dioxide capturing in an Algal-Cathode Photosynthetic Microbial Fuel Cell has been evaluated. The performance of the system under different light intensity (3500, 5000, 7000 and 10000 lux) and also different light:dark regime (24:00, 12:12 and 8:16 hour) has been studied. The results show that, light intensity has direct effects on performance of Photosynthetic Microbial Fuel Cell (PMFC) with changing dissolved oxygen in biological cathode. So, the PMFC can reach power density of 125.96 mW/m3 with optimized light intensity of 5000 lux and simultaneously columbic efficiency and COD... 

    Simultaneously energy production and dairy wastewater treatment using bioelectrochemical cells: In different environmental and hydrodynamic modes

    , Article Chinese Journal of Chemical Engineering ; 2017 ; 10049541 (ISSN) Hasany, M ; Yaghmaei, S ; Mardanpour, M. M ; Ghasemi Naraghi, Z ; Sharif University of Technology
    Chemical Industry Press  2017
    A successful design, previously adapted for treatment of complex wastewaters in a microbial fuel cell (MFC), was used to fabricate two MFCs, with a few changes for cost reduction and ease of construction. Performance and electrochemical characteristics of MFCs were evaluated in different environmental conditions (in complete darkness and presence of light), and different flow patterns of batch and continuous in four hydraulic retention times from 8 to 30h. Changes in chemical oxygen demand, and nitrate and phosphate concentrations were evaluated. In contrast to the microbial fuel cell operated in darkness (D-MFC) with a stable open circuit voltage of 700mV, presence of light led to growth of... 

    A compact versatile microbial fuel cell from paper

    , Article ASME 2013 11th Int. Conf. on Fuel Cell Science, Eng. and Technology Collocated with the ASME 2013 Heat Transfer Summer Conf. and the ASME 2013 7th Int. Conf. on Energy Sustainability, FUELCELL 2013 ; 2013 ; 9780791855522 (ISBN) Wagner, L. T ; Hashemi, N ; Hashemi, N ; Sharif University of Technology
    Microbial fuel cells (MFCs) have been a potential green energy source for a long time but one of the problems is that either the technology must be used on a large scale or special equipment have been necessary to keep the fuel cells running such as syringe pumps. Paper-based microbial fuel cells do not need to have a syringe pump to run and can run entirely by themselves when placed in contact with the fluids that are necessary for it to run. Paper-based microbial fuel cells are also more compact than traditional MFCs since the device doesn't need any external equipment to run. The goal of this paper is to develop a microbial fuel cell that does not require a syringe pump to function. This... 

    Electricity generation from petrochemical wastewater using a membrane-less single chamber microbial fuel cell

    , Article 2012 2nd Iranian Conference on Renewable Energy and Distributed Generation, ICREDG 2012 ; 2012 , Pages 23-27 ; 9781467306652 (ISBN) Marashi, S. K. F ; Kariminia, H. R ; Sharif University of Technology
    Microbial fuel cells (MFCs) represent a new method for simultaneous wastewater treatment and biological electricity generation. In this study, petrochemical wastewater with 8000 mg/l of chemical oxygen demand was examined in a membrane-less single chamber MFC. Effects of wastewater concentration as substrate for microbial oxidation, and anode material (stainless steel or carbon brush) were investigated as designing parameters  

    Modeling of microfluidic microbial fuel cells using quantitative bacterial transport parameters

    , Article Journal of Power Sources ; Volume 342 , 2017 , Pages 1017-1031 ; 03787753 (ISSN) Mardanpour, M. M ; Yaghmaei, S ; Kalantar, M ; Sharif University of Technology
    Elsevier B.V  2017
    The objective of present study is to analyze the dynamic modeling of bioelectrochemical processes and improvement of the performance of previous models using quantitative data of bacterial transport parameters. The main deficiency of previous MFC models concerning spatial distribution of biocatalysts is an assumption of initial distribution of attached/suspended bacteria on electrode or in anolyte bulk which is the foundation for biofilm formation. In order to modify this imperfection, the quantification of chemotactic motility to understand the mechanisms of the suspended microorganisms’ distribution in anolyte and/or their attachment to anode surface to extend the biofilm is implemented... 

    Investigation of the Membrane Characteristics on the Performance of Microbial Fuel Cell

    , M.Sc. Thesis Sharif University of Technology Nikousefat , Omid (Author) ; Torkian, Ayoub (Supervisor) ; Gobal, Freydoon (Supervisor)
    The process of human populations growth, limited resources of fossil fuels and its environmental consequences have driven the international community to Renewable Energy. Microbial fuel cell (MFC) has ability of simultaneous wastewater treatment and electricity generation (Energy). This technology can be considered as one of the proposed solutions to reduce costs of wastewater treatment and power generation. Separators are one of the major components of the MFC that have direct impact on cell performance. On the other hand, high costs of the conventional types have caused to limiting development of the MFC in the last decade.
    In this study, inexpensive and available glass wool membrane... 

    Design and Optimization of Microbial Fuel Cell (MFC) for Organic Pollution

    , M.Sc. Thesis Sharif University of Technology Nabavian, Alborz (Author) ; Vossoughi, Manouchehr (Supervisor) ; Seif Kordi, Ali Akbar (Supervisor)
    A Microbial fuel cell is a Bioreactor in which chemical bands are broken and their energy convert to electricity by bio-catalysts such as microorganisms and enzymes. Depletion of energy resources encouraged researchers to investigate microbial fuel cell as a power bio-resource. MFCs produce electricity or hydrogen without any net carbon emission. Nowadays, real applications of microbial fuel cells are limited because their power density level is very low (about 1000 mW/m2). Many research projects are running to modify MFCs operation and optimize its costs. The most important application of MFCs is electricity production, hydrogen production, waste water treatment and BOD5 biosensor. In this... 

    Investigating Different Methods of Coating the Polyaniline on Anode Electrode and its Effect on Microbial Fuel Cell Performance

    , M.Sc. Thesis Sharif University of Technology Ghasemi, Behzad (Author) ; Yaghmaei, Soheila (Supervisor)
    In this research, different methods of coating polyaniline on the anode electrode and its performance in a microbial fuel cell, and a chemical method for making polyaniline / graphene catalyst on a cathode electrode and its performance in microbial electrolysis cell electrode were investigated. There are two main goals in this study. First, the production of polyaniline and the comparison of the surface morphology of this fiber with other forms of polyaniline on the surface of the electrode and its effect on the performance of the microbial fuel cell and the second, the production of polyaniline / graphene catalyst in the cathode electrode and its comparison with the platinum catalyst in the... 

    Characterization of a microfluidic microbial fuel cell as a power generator based on a nickel electrode

    , Article Biosensors and Bioelectronics ; Volume 79 , 2016 , Pages 327-333 ; 09565663 (ISSN) Mardanpour, M. M ; Yaghmaei, S ; Sharif University of Technology
    Elsevier Ltd  2016
    This study reports the fabrication of a microfluidic microbial fuel cell (MFC) using nickel as a novel alternative for conventional electrodes and a non-phatogenic strain of Escherichia coli as the biocatalyst. The feasibility of a microfluidic MFC as an efficient power generator for production of bioelectricity from glucose and urea as organic substrates in human blood and urine for implantable medical devices (IMDs) was investigated. A maximum open circuit potential of 459mV was achieved for the batch-fed microfluidic MFC. During continuous mode operation, a maximum power density of 104Wm-3 was obtained with nutrient broth. For the glucose-fed microfluidic MFC, the maximum power density of... 

    A Study on Soil Microbial Fuel Cell for Producing Energy and Bioremediation

    , M.Sc. Thesis Sharif University of Technology Afsham, Neda (Author) ; Yaghmaei, Soheila (Supervisor) ; Roshandel, Ramin (Supervisor)
    With the current demands in alternative methods of energy production and increased utilization of existing energy sources, microbial fuel cells have become an important field of research. In a microbial fuel cell, organic and inorganic compounds can be oxidized by microbial catabolism at the anode to generate direct electricity. A kind of microbial fuel cell (MFC) is sediment microbial fuel cell (SMFC) consists of an anode electrode embedded in the anaerobic sediment and a cathode electrode suspended in the overlying aerobic water. microorganisms produce electrons by oxidation of organic or inorganic compounds in the sediment at anode electrode, while oxygen is reduced in the water by... 

    Experimental Studies for Construction of a Microbial Fuel Cell (MFC) in Continuous Flow Mode

    , M.Sc. Thesis Sharif University of Technology Sadeghi Haskoo, Mohammad Amin (Author) ; Vossoughi, Manoochehr (Supervisor) ; Aalemzadeh, Iran (Supervisor)
    In this research performance of microbial fuel cells (MFCs) in continuous flow mode was studied. Different anodic chambers were tested and it was found that granular activated carbons (GACs) produced the highest power density (1228 mW/m3) in comparison with multiple anodes (731 mW/m3), single anode (294 mW/m3) and polymeric packings (40 mW/m3). It was also shown that in a plug-anodic chamber (PAC) the power output is reduced by reducing agitation of anodic volume. Adding more GACs to anodic chamber results in power increase, however by increasing occupied volume from 80% to 100% the power increase was negligible in result of cathodic reactions limitations. Feed flowrate was increased from... 

    Experimental Evaluation of Membrane-less Microbial Fuel Cell

    , M.Sc. Thesis Sharif University of Technology Rasouli, Fatemeh (Author) ; Kariminia, Hamid Reza (Supervisor)
    Microbial fuel cell (MFC) has attracted a great attention in the recent years due to its advantage of simultaneous energy generation and pollution removal. However, utilization of MFC technologies a challenging issue because of the low energy output and high expenses. Generally, using ion exchange membrane in MFC contributes to a large proportion of the construction costs. Without using a membrane, oxygen intrudes to the anode chamber which will inhibit the anode reaction and decreases the coulombic efficiency. As a solution, using less expensive membranes can facilitate the commercialization of MFC technology.
    In this study, soil cylinder and earthen plate were examined as low cost... 

    Experimental Investigation of Bio-hydrogen and Bio-electricity Production in an Annular Single-chamber Microbial Fuel-cell By Produced Waste Water Treatment

    , M.Sc. Thesis Sharif University of Technology Ghasemi Naraghi, Zahra (Author) ; Yaghmaei, Soheyla (Supervisor)
    This study works on the novel researchment about produced waste water treatment in an annular single-chamber microbial fuel cell.This configuration has a spiral anode which increase available surface for microorganismes.In this study two main goals are followed;first Bio-eletricity production in a microbial fuell cell and second Bio-hydrogen production in a microbial electrolysis cell. In bio-electricity production effect of two parameters were considered;effect of light and substrate concentration .Two systems were used in this research;one of them was exposed to the light and another was out of reach of any light.Results show that darkness has better effect on the cell’s performance... 

    Theoretical Investigation and Optimization of Effective Microbial Parameters of Different Biocatalyst in Microbial Fuel Cells System Using Genetic Algorithm

    , M.Sc. Thesis Sharif University of Technology Kalantar Neyestanaki, Mohammad (Author) ; Yaghmaie, Soheila (Supervisor)
    Microbial fuel cell is one of the new technologies in the field of power generation from the organic energy resource. The fuel cell system in a process similar to chemical fuel cell generate electrical energy through oxidation of organic composition by uses of electrogenic microorganisms as biocatalyst. In this study the main object is providing a comprehensive mathematical model for the fuel cell system in micro-liter size. To achieve this purpose, we start to investigate properties of fuel cell system in this size. And according to the geometry of system we choose chemotactic equation for estimating hydrodynamic behavior of microorganism and using combination of conductive base and... 

    Theoretical and Experimental Investigations of Bioelectrochemical Processes in Microfluidic Systems

    , Ph.D. Dissertation Sharif University of Technology Mardanpour, Mohammad Mahdi (Author) ; Yaghmaei, Soheila (Supervisor)
    The first attempt of this study was theoretical and experimental investigations of bioelectrochemical processes in microfluidic systems. Besides, novel applications of this technology as a powerful platform for maximum usage of bioenergy were introduced. The feasibility of a microfluidic microbial fuel cell (MFC) as an efficient power generator for production of bioelectricity for implantable medical devices (IMDs) and fabrication of microfluidic microbial electrolysis cell (MEC) for hydrogen medicine were investigated. For the glucose-fed microfluidic MFC, the maximum power density of 5.2 µW cm-2 obtained in this study is 13 fold greater than the power density reported previously for... 

    Investigation of the Performance of Microbial Fuel Cell Based on Shewanella Bacteria with the Aim of Nanostructured Materials

    , M.Sc. Thesis Sharif University of Technology Davoudi, Omid (Author) ; Yaghmaei, Soheila (Supervisor) ; Sanaee, Zeinab (Co-Supervisor)
    The development of clean, renewable and alternative sources of fossil fuels has increased in recent years due to various factors such as environmental pollution, reduced fossil fuel resources and increased energy consumption. The application of microbial fuel cells is one of the clean energy production methods using renewable sources such as municipal sewage. The microbial fuel cell converts the chemical energy stored in organic materials into electrical energy and simultaneously purifies the sewage. Increasing current density and power density are the most important challenges for microbial fuel cells. In this study, the two biocatalysts of Shewanella Oneidensis MR1 and Escherichia coli... 

    , M.Sc. Thesis Sharif University of Technology Honarparvar, Soraya (Author) ; Kariminia, Hamid Reza (Supervisor)
    Microbial Electrolysis is a new method for producing Biohydrogen from oxidation of organic materials by microorganisms. Generally, this process is depended on two different kinds of energy source containing Organic Material Oxidation by bacteria and Electricity. In this specific study, landfill leachate, extracted from ARADKOOH Tehran Iran was used as a carbon source and effective parameters in Microbial Electrolysis Cell were scrutinized for increasing the hydrogen production and efficiency of COD removal in wastewater. Two H-type rectors with 300 ml of volume in each side were used during the experiments. Various amount of voltages started with 0.4 (V), were tested in the system and it was... 

    Development of a Multi Generation Energy System Based on Biotechnologies

    , M.Sc. Thesis Sharif University of Technology Taheri, Neda (Author) ; Roshandel, Ramin (Supervisor)
    In recent years, the issue of sustainability in the energy systems has attracted the attention of energy researchers. Using fossil fuels in common energy conversion systems cause environmental pollution, declining reserves of fossil resources and increase their prices because of the scarcity of fossil resources. Therefore, achieving the goals of sustainability necessitate using high efficiency energy conversion technology. Bio-inspired energy systems are one of the main candidates to improve energy conversion systems. The main target of this study is developing an optimal multi-generation energy system model, dynamically. MFC, Septic tank and Algae culture are integrated and produced power,... 

    An efficient approach to cathode operational parameters optimization for microbial fuel cell using response surface methodology

    , Article Journal of Environmental Health Science and Engineering ; Vol. 12, issue. 1 , 2014 Hosseinpour, M ; Vossoughi, M ; Alemzadeh, I ; Sharif University of Technology
    Background: In the recent study, optimum operational conditions of cathode compartment of microbial fuel cell were determined by using Response Surface Methodology (RSM) with a central composite design to maximize power density and COD removal. Methods: The interactive effects of parameters such as, pH, buffer concentration and ionic strength on power density and COD removal were evaluated in two-chamber microbial batch-mode fuel cell. Results: Power density and COD removal for optimal conditions (pH of 6.75, buffer concentration of 0.177 M and ionic strength of cathode chamber of 4.69 mM) improve by 17 and 5%, respectively, in comparison with normal conditions (pH of 7, buffer concentration...