Abstract
This study demonstrates two microfluidic microbial fuel cells (μMFCs) for rapid screening of electroactive microorganisms. The μMFCs with Y-shaped channel determined the electroactivity by measuring the open circuit voltage (OCV) generated from different anolytes and the results indicate that electroactivity of microbes contributed 40 mV while the composition difference between streams contributed 70 mV. The second type of μMFCs applied conductive particles as carriers of microbes to perform long-term examination. Microparticles loaded with microbes generated much higher OCV than unloaded microparticles in a 6-hr test, showing that conductive microparticles have great potential in serving as anode in μMFCs.