미생물 연료 전지의 성능 및 전기화학에 대한 선형과 망형의 산화전극의 집전체의 영향

• 영문명: Effects of Wire-type and Mesh-type Anode Current Collectors on Performance and Electrochemistry of Microbial Fuel Cells
• 발행기관: 유기성자원학회
• 저자명: 김준혁 정석희
• 간행물 정보: 『유기성자원학회 학술발표대회논문집』2019년도 추계학술대회 발표집, 197~197쪽, 전체 1쪽
• 주제분류: 공학 > 환경공학
• 파일형태: PDF
• 발행일자: 2019.11.22

영문 초록

Microbial fuel cell (MFC) is remarkable environmental and energy system that converts energy in wastewater into electrical energy and purify wastewater. There are a number of challenges for the practical implementation of MFC as a wastewater treatment process. Among them Carbon-based material is commonly used for anodes in MFCs, but its low conductivity often limits anodic performance. Application of corrosion-resistive current collector to carbon-based anode can be a promising strategy for increasing the anodic performance. In this study, it was hypothesized increasing metal current collector improved anodic performance. Two different carbon-felt anodes with stainless steel mesh (CF-M) or titanium wires (CF-W) as a current collector were tested in a single chamber MFC. In the short-term tests such as polarization and impedance tests, CF-M with the larger current collector area (21.7 cm 2 ) had 33% higher maximum power (2,311 mW/m 2 ), 81% lower anodic resistance (3 Ω), and 92% lower anodic impedance (1.1 Ω). However, in the long-term tests, CF-W with the smaller current collector area (0.6 cm 2 ) showed higher performance in power and current generation, COD removal, and CE (51%, 10%, 11%, and 5%)higher, respectively) and produced 41% higher net current in cyclic voltagramm (20.0 mA vs. 14.2 mA). This result shows that larger current collector is advantageous in short-term performance and disadvantageous in long-term performance.

키워드

Microbial fuel cell Anode Titanium wire Stainless steel