2.3 Field Test
The field test was carried out in Ube city Yamaguchi bay tidal flat area (33.93 N, 131.22 E) (near the Sample 3) from where the sediment samples were collected for the laboratory experiments and it was considered that the basic physicochemical properties of the marin sediments were similar both in the laboratory and field experiments. The similar size of laboratory SMFC was set up in the tidal flat area in where the water inundates during the high tide and exposed to atmosphere during the low tide. The cathode was set up on the surface of the tidal flat sediment and the anode was set up inside the sediment (5 cm below). The same carbon fiber (Toray company, Japan) was used with the same surface area 100 cm2 which was used during the laboratory experiment. The voltage was measured in the field and the AVS was calculated in each week by following the same method of the laboratory experiment. To check the AVS variation both from laboratory and field test, the samples were collected from the anode area.