The use of fossil fuels is a major cause for increasing greenhouse gas emissions in the atmosphere. Over the past few centuries, overuse of fossil fuels and oil resources has caused serious problems such as air pollution and global warming. As these problems emerge, renewable energy devices, especia...
The use of fossil fuels is a major cause for increasing greenhouse gas emissions in the atmosphere. Over the past few centuries, overuse of fossil fuels and oil resources has caused serious problems such as air pollution and global warming. As these problems emerge, renewable energy devices, especially fuel cells, are receiving much attention. A fuel cell is an electrochemical device that continuously converts the chemical energy of the fuel into electrical energy until the fuel and oxidizer are supplied. Among the various types of fuel cells, microbial fuel cells are a device that converts the biochemical energy stored in organic matter into electrical energy. It is noted that the sewage treatment process, which consumes energy, can be converted into an energy production process by eliminating organic pollutants present in the sewage system while promoting energy production. Microbial fuel cells are usually divided into oxidized and reducted polar sections and consist of ionizing membranes to separating the two sections. In the oxidation pole, the electrochemical active microorganisms produce electrons and hydrogen ions through oxidation reactions of the substrate through oxidative breathing of electronic transmission lamps, and the produced electrons are transferred to the electrode and moved to the reduction pole through an external circuit, and the reaction ends by combining with hydrogen ions and oxidants in the reduction pole. In this study, we observed at the different characteristics of mixed strains in wastewater collected by E. coli at Jeonju City Environmental Office to compare voltage generation according to microbial types among various factors such as substrate, electrode material, electron, electron transfer medium, and microbial types that affect the voltage generation and yeast of ash microbial fuel cells. The voltage generation was measured separately at the time of inoculation and the voltage value was collected using a digital multimeter to measure the voltage generation over time. In addition, after inoculation, an image of the injection electron microscope was taken to check the degree of microbial adsorption on the electrode surface, and the electrode surface shape before and after inoculation was compared. Microbial fuel cells inoculated with wastewater microorganisms recorded higher voltage generation than microbial fuel cells inoculated with E. coli. Microbiological fuel cells inoculated with wastewater showed a maximum voltage of 1.18V after 40 hours. The current density also represented a maximum of 1.55 mA/cm2, and the power density was a maximum of 1.50 mW/cm2. Therefore, it was confirmed that the voltage current curve shows higher electrochemical properties than the existing E. coli microbial fuel cell.
The use of fossil fuels is a major cause for increasing greenhouse gas emissions in the atmosphere. Over the past few centuries, overuse of fossil fuels and oil resources has caused serious problems such as air pollution and global warming. As these problems emerge, renewable energy devices, especially fuel cells, are receiving much attention. A fuel cell is an electrochemical device that continuously converts the chemical energy of the fuel into electrical energy until the fuel and oxidizer are supplied. Among the various types of fuel cells, microbial fuel cells are a device that converts the biochemical energy stored in organic matter into electrical energy. It is noted that the sewage treatment process, which consumes energy, can be converted into an energy production process by eliminating organic pollutants present in the sewage system while promoting energy production. Microbial fuel cells are usually divided into oxidized and reducted polar sections and consist of ionizing membranes to separating the two sections. In the oxidation pole, the electrochemical active microorganisms produce electrons and hydrogen ions through oxidation reactions of the substrate through oxidative breathing of electronic transmission lamps, and the produced electrons are transferred to the electrode and moved to the reduction pole through an external circuit, and the reaction ends by combining with hydrogen ions and oxidants in the reduction pole. In this study, we observed at the different characteristics of mixed strains in wastewater collected by E. coli at Jeonju City Environmental Office to compare voltage generation according to microbial types among various factors such as substrate, electrode material, electron, electron transfer medium, and microbial types that affect the voltage generation and yeast of ash microbial fuel cells. The voltage generation was measured separately at the time of inoculation and the voltage value was collected using a digital multimeter to measure the voltage generation over time. In addition, after inoculation, an image of the injection electron microscope was taken to check the degree of microbial adsorption on the electrode surface, and the electrode surface shape before and after inoculation was compared. Microbial fuel cells inoculated with wastewater microorganisms recorded higher voltage generation than microbial fuel cells inoculated with E. coli. Microbiological fuel cells inoculated with wastewater showed a maximum voltage of 1.18V after 40 hours. The current density also represented a maximum of 1.55 mA/cm2, and the power density was a maximum of 1.50 mW/cm2. Therefore, it was confirmed that the voltage current curve shows higher electrochemical properties than the existing E. coli microbial fuel cell.
주제어
#Microbial Fuel Cell E.Coli K12 Nafion Dual chambered microbial fuel cell Voltage generation scanning Electron Microscopy
학위논문 정보
저자
김상규
학위수여기관
전북대학교 일반대학원
학위구분
국내석사
학과
에너지저장변환공학과
지도교수
유동진
발행연도
2020
총페이지
vi, 48 p.
키워드
Microbial Fuel Cell E.Coli K12 Nafion Dual chambered microbial fuel cell Voltage generation scanning Electron Microscopy
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