역전기투석 스택의 유량에 따른 미생물 역전기투석 셀의 전기화학적 성능

• 영문명: Influence of the Flow-rate to a Reverse Electro-Dialysis (RED) Stack on Performance and Electrochemistry of a Microbial Reverse Electrodialysis Cell (MRC)
• 발행기관: 유기성자원학회
• 저자명: 트란 비엣 호아 흐엉 정석희
• 간행물 정보: 『유기성자원학회 학술발표대회논문집』2019년도 추계학술대회 발표집, 198~198쪽, 전체 1쪽
• 주제분류: 공학 > 환경공학
• 파일형태: PDF
• 발행일자: 2019.11.22

영문 초록

An MRC is a bioelectrochemical system combining a microbial fuel cell (MFC) with a RED stack to generate electricity from salinity gradient and organic wastewater with simultaneous treatment. Operating an MRC at an optimum flowrate to RED is important because it is closely related with energy production rate and economic feasibility. However, influence of RED flowrates on MRC electrochemistry and power production have not been investigated. For this purpose, four different flowrates of high concentration and low concentration solutions were tested. Maximum power density was highest in 10 mL/min (3.71 W/m 2 ) and optimum current density was highest in 7.5 mL/min (5.36 A/m 2 ). By mere increasing the flowrate to MRC, maximum power and optimum current densities increased by 17.7% and 16.2%. EIS showed that impedances of anode, cathode and full-cell were decreased by 51%, 31% and 19%, respectively. Anode CV showed that peak current density was increased by 25.7%. COD removal and CE were not affected by RED flowrate. Power generation at 7.5 mL/min and 10 mL/min were not so different, but current production was better at 7.5 mL/min. Therefore, considering energy production, the RED flowrate of 7.5 mL/min is a reasonable choice for MRC operation.

키워드

Microbial fuel cell Reverse electro-dialysis (RED) microbial reverse-electrodialysis cell RED flow rate