Effects of substrate concentrations on performance of serially connected microbial fuel cells (MFCs) operated in a continuous mode
- Authors
- Gurung, Anup; Kim, Jungrae; Jung, Sokhee; Jeon, Byong Hun; Yang, Jae E.; Oh, Sang-Eun
- Issue Date
- Oct-2012
- Publisher
- SPRINGER
- Keywords
- Electricity; Hydraulically; Microbial fuel cell; Stacking
- Citation
- BIOTECHNOLOGY LETTERS, v.34, no.10, pp.1833 - 1839
- Indexed
- SCIE
SCOPUS
- Journal Title
- BIOTECHNOLOGY LETTERS
- Volume
- 34
- Number
- 10
- Start Page
- 1833
- End Page
- 1839
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/164455
- DOI
- 10.1007/s10529-012-0979-3
- ISSN
- 0141-5492
- Abstract
- Stacking of microbial fuel cells (MFC) by connecting multiple small-sized units in a series is used for generating higher power from the MFCs. However, voltage reversal is a critical problem in a serially connected MFC unit. The voltage reversal often occurs when substrate concentration is relatively low in the anodic compartment. Two rectangular individual cells were stacked together in series: MFC1 was fed with 1 g glucose L-1 throughout the experiment while MFC2 was fed with various concentrations of glucose (0.1, 0.2, 0.3, 0.5 and 0.8 g L-1). Voltage reversal occurred when the stack configuration was performed using (1 + 0.1) g glucose L-1. The stacked configurations with (1 + 0.2, 1 + 0.3, 1 + 0.5 and 1 + 0.8) g glucose L-1 were operated successfully without the voltage reversal. The maximum powers of 1.88, 2.04, 3.6, 2.5 and 2.18 mW were obtained with the stacked configurations of (1 + 0.2), (1 + 0.3), (1 + 0.5), (1 + 0.8) and (1 + 1) g glucose L-1, respectively. Except in the stacked configuration with (1 + 0.1) g glucose L-1, the stacked voltages obtained were similar.
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