Journal
BIOSENSORS & BIOELECTRONICS
Volume 79, Issue -, Pages 327-333Publisher
ELSEVIER ADVANCED TECHNOLOGY
DOI: 10.1016/j.bios.2015.12.022
Keywords
Microfluidic microbial fuel cell; Nickel electrode; Escherichia coli; Glucose
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Funding
- Sharif University of Technology, Vice President for Research Grant [G930111]
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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 459 mV was achieved for the batch-fed micro fluidic MFC. During continuous mode operation, a maximum power density of 104 W m(-3) was obtained with nutrient broth. For the glucose-fed microfluidic MFC, the maximum power density of 5.2 mu W cm(-2) obtained in this study is significantly greater than the power densities reported previously for microsized MFCs and glucose fuel cells. The maximum power density of 14 W m(-3) obtained using urea indicates the successful performance of a microfluidic MFC using human excreta. It features high power density, self regeneration, waste management and a low production cost ( <$1), which suggest it as a promising alternative to conventional power supplies for IMDs. The performance of the microfluidic MFC as a power supply was characterized based on polarization behavior and cell potential in different substrates, operational modes, and concentrations. (C) 2015 Elsevier B.V. All rights reserved.
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