Intensification of bioelectricity generation in microbial fuel cells using Shewanella oneidensis MR-1 mutants with increased reducing activity

摘要

Electrogenicity of Shewanella oneidensis MR-1 mutants FRS1 and FRB1 with reducing activity 30-40% higher than in the original strain was studied in various microbial fuel cells (MFC) developed in the course of the work. The voltage and current density developed by the mutants were 1.7 times higher than in the case of S. oneidensis MR-1. A correlation was found between reducing activity of the cells and the voltage and current density developed in MFC. The possibility for enhanced bioelectricity production in MFC by genetic modification of S. oneidensis MR-1 was demonstrated.