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.