Fig. 3. Epifluorescent microscopy pictures of the monospecies biocathodes. Monospecies biocathodes were formed in synthetic seawater after 7 days of polarization at 0.3 V/ECS
in synthetic seawater (1st test in Table 1). Biofilm coverage ratios were 15, 22, 25 and 7% for Bacillus, Marinobacter, Pseudoalteromonas and Roseobacter, respectively.